NGC 1055 is a member of the M77 (NGC 1068) group. At first glance, it appears much like an ordinary near edge-on spiral galaxy. But if you stretch the image as I've done you notice two obvious features that aren't common. The first is a tight pair of parallel linear dust lanes going NW from the core of the galaxy and thus at an angle to the plane of the galaxy as defined by its massive dust lane. The other, is its halo. Instead of being round as most are or square as is sometimes seen in galaxies with a "small" black hole and thus not very massive halo. the halo of NGC 1055 seems to have gone beyond square to a four pole shape, a square that is pinched in on all four sides. The argument that all isn't normal gets stronger when viewed at other frequencies than visible light. It is strong in radio, especially HI and CO bands, it is a strong IR emitter as well indicating strong star birth hidden behind a thick curtain of dust. Its spectrum shows it to be both a Seyfert 2 and LINER 2 galaxy, both indications of a recent encounter that has stirred up star formation and is providing food for its core's black hole. Many bright blue star clusters stand out against its dark dust lanes. These must contain a great number of very short-lived supermassive stars. Yet another indication of something triggering unusually strong star formation in this galaxy.
NGC 1055 was discovered by William Herschel on December 18 and 19, 1783. The story behind his two "discoveries" of the galaxy one day apart is too long to cover here. See http://cseligman.com/text/atlas/ngc10a.htm#1055 for the story. My log entry from the original Herschel 400 program with my 10" f/5 at 89 power on the good night of September 11, 1985 is unusually short. It read; "Large, highly elongated evenly bright patch of a galaxy. Difficult due to 10th magnitude field star at one end." Considering the 11th magnitude star is northwest of the core and still, in the glare of the central region, it appears I wasn't seeing but the bright center of the galaxy.
The galaxy is located in Cetus about a half degree from M77. If I had rotated my camera about 35 degrees east of north I could have just barely fit both in one frame. Instead, I'll refer you to a Robert Gendler image of the pair at APOD. http://apod.nasa.gov/apod/ap061215.html
Was M77 involved with a close encounter with NGC 1055? Could be. M77 shows strong signs of a past interaction and is a Seyfert 1 and Liner 2 galaxy. It also has an outer blue ring of stars. All this could be a sign of past interaction.
APOD puts the group at about 60 million light-years from us. I found a surprisingly large range of values for the distance to these galaxies. 60 million is a bit further than the average but well within the range. This just shows that we still have a long way to go in pinning down the true distances to even rather nearby galaxies.
14" LX200R @ f/10, L=4x10', RGB=2x10'x3, STL-11000XM, Paramount ME Related Designations for NGC1055NGC 1055, UGC 02173, CGCG 388-095, CGCG 0239.1+0013, MCG +00-07-081, 2MFGC 02138, PKS 0239+002, 2MASX J02414523+0026354, 2MASS J02414522+0026359, SDSS J024144.78+002642.4, SDSS J024145.22+002635.4, IRAS 02391+0013, IRAS F02391+0013, AKARI J0241452+002639, LDCE 0174 NED005, HDCE 0163 NED001, USGC U143 NED03, APMUKS(BJ) B023911.27+001344.9, HIPASS J0241+00, NSA 007419, PGC 010208, UZC J024145.4+002635, PKS B0239+002, PKS J0241+0026, PMN J0241+0026, MG1 J024147+0027, 87GB 023910.2+001306, 87GB[BWE91] 0239+0013, [WB92] 0239+0013, NVSS J024145+002638, HIPEQ J0241+00, LGG 073:[G93] 001, [M98j] 041 NED06, [RHM2006] SFGs 023, NGC1055, | NGC1055L4X10RGB2X10X3-ID.jpg
NGC1055L4X10RGB2X10X3.jpg
| The NGC 1060 galaxy group, about 200 million light-years away, in southeast Triangulum, caught my eye at the NGC project so I have had it on my to-do list for some time now. I finally imaged it September 12, 2010 then forgot about it. I got several surprises once I started processing the image. First I noticed the galactic cirrus that lays across part of the image. I had no idea it was there. If I had I'd have put in more than my standard 40 minutes of time. The other surprise was all the galaxy interaction going on in this field. My third surprise was that one of the galaxies in the field (near the bottom) is V Zw 274 which was on my Arp-like list to image. This will be a long post. Those here for the pretty pictures can scroll down now.
The NGC 1060 galaxy group goes by many names and galaxy counts. Officially the cluster under this name has only 6 members. I suppose those are the 6 NGC objects in the field. Unfortunately, one of them NGC 1062 is just a star. Though many catalogs incorrectly put that label on UGC 02201. Under the WBL 085 entry it has 7 members, as HDCE 0165 and PPS2 175 it has 12 members, USGC U145 sets the record at 13 members. Rather than try to figure out this ID mess I just labeled every galaxy NED has an entry for in my image. Distance based on redshift data using their 5 year WMAP calculator is given when possible. Many galaxies aren't listed in NED. Three of the brightest not in NED at the time the annotated image was made back in 2011 are noted with a question mark.
My color data is weak for coloring the galactic Cirrus. I debated even trying to apply what little color data I had to it. I tried both ways finally deciding to let the color data do its thing, noisy as it is. Converting to JPG format made it look a lot worse than it does in the TIFF file.
NGC 1057 is classed as S0. It seems to have some disk structure including a couple faint dust bands that give it a faint spiral structure. It was discovered by George Stoney in December 1849.
NGC 1060 appears to anchor the cluster. It is a huge E-S0 galaxy. Due to the cirrus in our galaxy, it is hard to tell where the galaxy ends. It appears to have a rather large halo. It was discovered by William Herschel on September 12, 1784. It is in the second H400 observing program.
NGC 1061 which is classed as irregular. It has two obvious spiral arms, one of which is truncated same as several other odd galaxies I've imaged. In this case, the arms are embedded in a rather bright disk. It was discovered by George Stoney in December 1849.
NGC 1062 is just a star that fooled Ralph Copeland on October 11, 1873. It is not UGC 02201 as some sources claim.
NGC 1066 is another huge elliptical galaxy that appears to have a couple shells. In the outer one between two stars is an odd linear feature. I thought it an asteroid. But that is not the case. I found it in an image in the DR8 data release of the Sloan Survey. Unless they took their image at the exact same time as I did it is something else. Is it a flat galaxy seen edge on or some feature of the galaxy? I found nothing on it. NGC 1066 was discovered by William Herschel on September 12, 1784. It isn't in either H400 program.
NGC 1067 is an SAB(s)c or Sc galaxy, one of the few spirals in the group. The dust lane that defines one arm is far darker than its counterpart that defines the other arm. It also seems to have a linear feature almost at right angles to the bar like structure. At first glance, this seemed a normal spiral but these two features are far from normal. It was discovered by John Herschel on November 22, 1827.
Between 1066 and 1067 is UGC 02201 which some catalogs confuse with NGC 1062. An edge on spiral classed as Sc or Sd. The disk is obviously warped and not symmetrical. Likely it has interacted with others in the group. Could LEDA 213075 be involved? Without distance data for it, there's no way to know.
PGC 010337 is an even more distorted spiral seen nearly face on. I thought it a spiral I should say. Seems it is classed as either irregular or an irregular of the Magellanic type. it shows a plume of stars to the southwest. Likely it was a reasonable spiral before it tangled with its neighbors.
LEDA 213071 is a disturbed galaxy to the west (right) of PGC 010337. To me, it looks like a barred ring type spiral with two plumes for arms coming off the ring. They'd be easier to see if not for the cirrus and extended halo of NGC 1060. No distance data on this one, unfortunately.
MCG +05-07-046 well to the southeast is another ring like disk galaxy with plumes coming from the ring. It appears to be an ordinary spiral rather than a barred spiral. Being somewhat out of the cirrus the plumes are easier to see. The edge on rather flat galaxy below it is anonymous, at least to NED. Since this field is covered by the newly released DR8 edition of the Sloan Survey I assume it will be picked up when NED adds that huge data file to its database. I don't expect that to be done overnight, however!
V Zw 274 is an entry in the Fifth Zwicky list of galaxies and was privately circulated rather than published. NED, however, picked it up and somehow I learned of it and put it on my to-do list. Then imaged it accidentally! Odd how things like this happen. I find no attempt to classify it. A blob with one well defined plume and one rather ill defined plume would seem to put it in the irregular class. How it got so torn up is the question. Without distance data, we can't even tell if it is a member of the group. Seems likely it got tore up by passing too close to another galaxy, likely one of the major elliptical galaxies, but without distance data, I can't tell if that is even possible. If anyone lives in these torn up galaxies can they even detect something is amiss? Could we if in such a messed up galaxy? Probably but I doubt we'd really fully understand its shape. Seeing it in 2D we can't do much better from our vantage point either.
Another strange galaxy is LEDA 213076 northeast of NGC 1067. It has a super tiny core and is a featureless disk. If that is a disk. It could be an SO seen end on. I find nothing on it. It's the small core that makes it so unusual to my eye. Is that a star or star knot on the east edge? Looking at the Sloan data it appears to be a star. Their image shows some faint spiral arms in the disk and a faint vertical bar.
14" LX200R, L=4x10' RB=2x10' G=1x10' (Dawn killed the second green), STL-11000XM, Paramount ME Related Designations for NGC1060NGC 1060, UGC 02191, CGCG 505-038, CGCG 0240.2+3212, MCG +05-07-035, 2MASX J02431504+3225300, 2MASXi J0243150+322530, 2MASS J02431506+3225298, SDSS J024315.07+322529.6, GALEXASC J024315.06+322529.3 , GALEXMSC J024315.25+322530.2 , WBL 085-002, LDCE 0176 NED028, HDCE 0165 NED002, USGC U145 NED01, NSA 155179, PGC 010302, UZC J024315.1+322529, UZC-CG 037 NED01, NVSS J024315+322531, LGG 072:[G93] 003, NGC 1057, UGC 02184, CGCG 505-037, CGCG 0240.0+3217, MCG +05-07-033, 2MASX J02430289+3229283, 2MASXi J0243028+322928, 2MASS J02430288+3229284, GALEXASC J024302.89+322927.7 , GALEXMSC J024302.86+322928.6 , WBL 085-001, LDCE 0176 NED027, NPM1G +32.0111, NSA 132449, PGC 010287, NGC 1061, KUG 0240+322, CGCG 505-039, CGCG 0240.2+3215, MCG +05-07-036, 2MASX J02431575+3228000, 2MASXi J0243157+322801, 2MASS J02431577+3228006, GALEXASC J024315.76+322800.3 , GALEXMSC J024315.78+322800.2 , IRAS 02402+3215, IRAS F02402+3215, AKARI J0243159+322756, WBL 085-003, LDCE 0176 NED029, HDCE 0165 NED003, USGC U145 NED05, AGC 120453, NSA 132457, PGC 010303, UZC J024315.8+322800, UZC-CG 037 NED02, NVSS J024315+322759, NGC 1062, 2MASS J02432409+3227418, NGC 1066, UGC 02203, CGCG 505-044, CGCG 0240.8+3215, MCG +05-07-042, 2MASX J02434989+3228295, 2MASXi J0243498+322829, 2MASS J02434993+3228296, GALEXASC J024350.01+322832.1 , GALEXMSC J024349.93+322830.2 , WBL 085-006, LDCE 0176 NED032, HDCE 0165 NED006, USGC U145 NED07, NPM1G +32.0112, NSA 132474, PGC 010338, UZC J024349.9+322828, NGC 1067, UGC 02204, CGCG 505-045, CGCG 0240.8+3218, MCG +05-07-043, 2MASX J02435052+3230425, 2MASXi J0243505+323042, 2MASS J02435051+3230431, WBL 085-007, USGC U145 NED12, NSA 132475, PGC 010339, UZC J024350.4+323042, UZC-CG 037 NED04, NVSS J024350+323039, LGG 066:[G93] 009, NGC1060, NGC1057, NGC1061, NGC1062, NGC1066, NGC1067, | NGC1057L4X10RB2X10G1X10-ID.JPG
NGC1057L4X10RB2X10G1X10R1.JPG
| NGC 1070 is a face on spiral galaxy in the head of Cetus about 180 million light-years distant. It is classified as Sb by NED and S?? by Seligman. It has either a very faint thin outer arm or a thin ring. I'd hoped to bring it out but see the night had cloud issues that cut my photon capture to about half what it would have been without the clouds. The ring or arm can be faintly traced from a knot at the top of the galaxy around through the star above the 1 in NGC 1070. Further hints can be seen around through a faint galaxy off the bottom of NGC 1070. A bit better image of it can be seen at http://cseligman.com/text/atlas/ngc1070.jpg but it doesn't catch it much better than I did.
Besides the clouds the seeing was poor so this isn't a very good image. I didn't see it until too late to retake it this year so this will have to do until I can try again, if I ever do. It was discovered by William Herschel on December 13, 1784. It is in the second Herschel 400 observing program.
Being near the Zone of Avoidance I found little on the background galaxies. One, PGC 010350 appears to be a small companion as its redshift is similar. I measure the galaxy including the part of the arm or ring I can catch at about 160,000 light-years. Others seeing more of the ring or arm say 170,000 light-years. PGC 010350 is about 35,000 light-years across. I found no classification for it. Their projected separation is about 560,000 light-years assuming both are at the same distance, not likely so this gives a minimum separation. So is it responsible for the odd arm or ring on NGC 1070? I found nothing on this. In fact, I found little on either galaxy.
The annotated image shows what few galaxies NED listed in the field, even those without redshift information. Most background galaxies remain unlabeled as they weren't in NED or SIMBAD.
The field is only about 10.4 degrees south of the ecliptic yet no asteroids down to magnitude 21.0 are in the field. Two were just out of the field, however, both 21st magnitude. Conditions were so poor I doubt I could have picked them up even if they had been in the field.
14" LX200R @ f/10, L=4x10' RGB=2x10', STL-11000XM, Paramount ME
Related Designations for NGC1070NGC 1070, UGC 02200, CGCG 414-045, CGCG 0240.7+0446, MCG +01-07-026, 2MASX J02432226+0458064, 2MASS J02432224+0458059, SDSS J024322.26+045806.0, IRAS 02407+0445, IRAS F02407+0445, AKARI J0243223+045804, ISOSS J02432+0457, HIPASS J0243+04, NSA 132459, PGC 010309, UZC J024322.3+045806, NVSS J024322+045804, [SLK2004] 0335, NGC1070, | NGC1070L4X10RGB2X10.JPG
NGC1070L4X10RGB2X10CROP.JPG
NGC1070L4X10RGB2X10ID.JPG
| NGC 1073 is a nearby barred spiral in Cetus about 1.4 degrees north of M77. It is about 45 to 50 million light-years distant as best as I could determine. Redshift gives the shorter distance and the one Tully Fisher measurement I found gives the longer estimate. It is classed as SB(rs)c by NED and SBc II by the NGC Project.
NGC 1073 reminds me of Arp 38. Both have a curl of stars on a spiral arm. Arp took the one in Arp 38 for a separate galaxy. Even though this one is very similar he didn't include it. Likely because this one is close enough to better resolve the curl and see it isn't a galaxy. Still shouldn't that have been a tip-off that the curl in Arp 38 may be the same thing? NGC 1073 was discovered by William Herschel on October 9, 1785. It is in the second H400 observing program.
It is close enough that its brighter stars can be easily resolved by the Hubble Space Telescope. They have covered it in a press release. I'll save my fingers and let you read about the galaxy at http://www.spacetelescope.org/news/heic1202/ . For some reason, the HII regions are left uncolored in the HST image rather than pink as they should be in a true color image. Apparently, their image is not true color though it does seem to get the stars and bar reasonably correct.
The article points out three quasars seen right through the galaxy. NED shows a fourth even closer to the core. Problem is I think this might be an error. It is listed about the same brightness as the other three yet I can't find it in my image, the Sloan image nor the HST image which goes much fainter. I don't know if the press release missed it, skipped it because it is too faint for even their scope or it doesn't exist. The last seems most likely to me.
There are other quasars in the area. Most are just out of my field of view to the south. Most of the Sloan data at NED covers only the very bottom of my image but for the quasars. The other sources that do cover the rest of the image don't seem to have any redshift data for the galaxies, only the quasars. So the annotated image is a bit skimpy. Except for the two asteroids, one hard to find as it is nearly 21st magnitude, I probably wouldn't have prepared one. The "bright" 17.9 magnitude asteroid at the bottom right is (37563) 1988 SG2. The other at an estimated (by the Minor Planet Center) 20.8 magnitude is 2011 TY9. It has no number because it has yet to complete an orbit since its discovery last year. According to the Minor Planet Center, the first observation of it was September 24.48 2011. My image was taken September 25.29 (start). Only one day later. It was observed by Pan-STARRS1 atop Haleakala on Maui. I almost beat them (well I didn't look at the frames until July 2012).
14" LX200R @ f/10, L=4x10' RGB=2x10', STL-11000XM, Paramount ME Related Designations for NGC1073NGC 1073, UGC 02210, CGCG 389-002, CGCG 0241.1+0110, MCG +00-08-001, 2MASX J02434059+0122331, 2MASS J02434053+0122343, IRAS 02411+0109, IRAS F02410+0109, ISOSS J02437+0123, LDCE 0174 NED007, HDCE 0163 NED003, USGC U143 NED01, HIPASS J0243+01, NSA 132468, PGC 010329, UZC J024340.6+012234, CXO J024340.5+012233, CXO J024340.52+012234.0, LGG 073:[G93] 003, [M98j] 041 NED08, [SLK2004] 0337, NGC 1073:[K2005] 05, NGC 1073:[L2011a] X0005, NGC1073, | NGC1073L4X10RGB2X10R-CROP125.JPG
NGC1073L4X10RGB2X10R-ID.JPG
NGC1073L4X10RGB2X10R.JPG
| NGC 1087, 1090 and 1094 are three nice spirals in Cetus just below the celestial equator. NGC 1087 is a SAB(rs)c spiral with a lot of Wolfe Rayet stars and HII emission though I didn't pick up the HII. The bar is very short. The NGC Project apparently doesn't see it saying it is an Sc spiral. In any case, the spiral structure is very broken and indistinct. Many star-forming regions are seen across its face. The disk is considered to have a very low surface brightness. While it seems rather bright this is mostly due to the star clusters rather than the disk itself. Both redshift and Tully Fisher measurements put it about 60 million light-years distant.
NGC 1090 is a more normal barred galaxy classed as SB(rs)bc by NED and SBb by the NGC project. It is about twice as distant as NGC 1087 at 120 million light-years. The third spiral, NGC 1094 again doubles the distance and adds a bit more as it is about 280 million light-years distant. The NGC project says it is an SAB(s)ab spiral while the NGC Project again says no bar saying Sa/Sb. Here I have to agree as I can't find it either though the way the arms join the core is more like that of a barred spiral so I assume it is there, just lost in dust. Just north of it is CGCG 389-017 an Sbc spiral at about the same distance but of a much smaller size.
Just off the bottom right of my image below the asteroid (73465) Buonanno is the galaxy cluster Abell 0381. However, none of its galaxies are obvious in my image. It is listed as having a diameter of 16 minutes putting about 40 percent of it in my image. Its distance is listed at 2.2 billion light-years. There are no galaxies in the image with the redshift appropriate for that distance. Instead, the field is peppered with galaxies at about 570 million light-years. However, I turned up no galaxy group at that distance in the field though several groups with little information on size were located both above and below the field at the appropriate distance.
NGC 1087 was discovered by William Herschel on October 9, 1785. It is in the second H400 observing program. He found NGC 1090 the same night but it isn't in either H400 program. He also found NGC 1094 but a month later on November 7, 1785. It isn't in either program.
The image contains a surprising number of quasars and quasar candidates with many more just outside the boundaries of the image. Many are in the 10 billion light-years range for light travel time.
The naming citation for the asteroid reads: (73465) Buonanno = 2002 NP55 Roberto Buonanno (b. 1947) is an expert in stellar evolution and director of the Osservatorio Astron{o}mico di Roma. He created the Planetary Sciences team at the OAR and supported research programs devoted to near-earth objects and to the study of the physical properties of the small bodies of the solar system.
Again, conditions took a toll on this image. It is more than a magnitude short of my typical limit thanks to poor transparency. But at least it was better than many nights in 2012 and 2013. Conditions also meant I threw out a lot of frames. I took 8 luminance and 4 of each color. I kept 5 of 8 luminance just to have enough data to make a decent image though it did reduce my resolution somewhat to do so. 3 of 4 red images, again weak were used, 2 green were usable but only one blue frame was usable, unfortunately. Still, I think that one blue frame has better signal than either of the other two colors. The results seem about correct to me even if there is that difference in the number of frames used.
14" LX200R @ f/10, L=5x10' R=3x10' G=2x10' B=1x10', STL-11000XM, Paramount ME Related Designations for NGC1087NGC 1087, UGC 02245, KUG 0243-007, CGCG 389-010, CGCG 0243.9-0042, MCG +00-08-009, 2MASX J02462517-0029553, 2MASXi J0246251-002955, 2MASS J02462520-0029557, SDSS J024625.15-002955.2, SDSS J024625.16-002955.1, SDSS J024625.17-002955.2, SDSS J024625.17-002955.3, SDSS J024625.32-002956.4, IRAS 02438-0042, AKARI J0246249-003002, ISOSS 017, ISOSS J02464-0029, ISOSS J02464-0030, CGS 164, LDCE 0174 NED008, ASK 036793.0, HIPASS J0246-00a, NSA 007509, PGC 010496, UZC J024625.2-002954, 87GB[BWE91] 0243-0041, [WB92] 0243-0041, NVSS J024625-002951, HIPEQ J0246-00b, [M98j] 041 NED09, [SLK2004] 0346, [BKD2008] WR 052, NGC 1090, UGC 02247, CGCG 389-011, CGCG 0244.0-0027, MCG +00-08-011, 2MASX J02463391-0014493, 2MASXi J0246336-001449, 2MASS J02463391-0014498, SDSS J024633.55-001450.6, SDSS J024633.93-001449.7, SDSS J024633.93-001449.8, SDSS J024634.90-001500.7, IRAS 02440-0027, IRAS F02440-0027, ISOSS J02465-0014, CGS 165, APMUKS(BJ) B024400.66-002719.1, HIPASS J0246-00b, NSA 155204, PGC 010507, UZC J024633.9-001450, NVSS J024634-001453, HIPEQ J0246-00a, [M98j] 046 NED01, [SLK2004] 0347, NGC 1094, UGC 02262, CGCG 389-016, CGCG 0244.9-0030, MCG +00-08-015, 2MASX J02472781-0017063, 2MASXi J0247278-001705, 2MASS J02472783-0017064, SDSS J024727.82-001706.5, SDSS J024727.83-001706.3, SDSS J024727.83-001706.4, GALEXMSC J024727.78-001706.5 , IRAS 02449-0029, IRAS F02449-0029, AKARI J0247278-001704, ISOSS J02474-0016, 6dF J0247277-001706, 6dF J0247278-001706, 6dFGSv 01405, LDCE 0202 NED001, HDCE 0176 NED001, USGC U149 NED05, ASK 036748.0, NSA 155208, PGC 010559, SRGb 155.020, UZC J024727.8-001706, NVSS J024727-001703, [M98j] 045 NED01, [SLK2004] 0350, [BFW2006] J041.86596-00.28512 , Mr18:[BFW2006] 05678 NED01, Mr19:[BFW2006] 11044 NED01, Mr20:[BFW2006] 18841 NED01, NGC1087, NGC1090, NGC1094, RESOLVE rf0394, | NGC1087L5X10R3X10G2X10B1X10.JPG
NGC1087L5X10R3X10G2X10B1X10ID.JPG
| FGC 0356/NGC 1110 is a flat galaxy in Eridanus about 50 to 60 million light-years distant. Its southern declination makes it a difficult target in winter for me as I get a frozen fog layer above the lake I have to look through which greatly dims the image along with brightening the background to near full moon brightness. This limits how deep I can go. Rare is the night I can do even as well as this image, especially this winter. Still, it doesn't go as deep as I'd like and seeing is much worse than even my poor normal of late.
NED classifies the galaxy as an SB(s)m galaxy. The NGC project calls it simply an Irregular galaxy. Usually, you have to be a disk galaxy (spiral) to be in the Flat Galaxy Catalog. The galaxy has three obvious blue near star-like regions. Two of them carry their own designations which NED lists as being: "Companion galaxy to or part of NGC 1110." Both are listed as HII emitters. That to me indicates they are very active star-forming regions in the galaxy rather than separate companions. NGC 1110 was discovered by Francis Leavenworth on December 21, 1886.
To the lower right is NGC 1108. Its redshift puts it much further away at 410 million light-years. That makes it about 90,000 light-years in diameter, over twice the size of FGC 0356 which is only about 42 to 50 thousand light-years in size depending on which distance estimate you use. The NGC project classifies NGC 1108 as a lenticular galaxy while NED says S0-: pec?. On its western edge is what appears to be an edge on disk galaxy though could be a small S0. I was surprised to find it wasn't listed in NED at all. So I can't say if it is related to NGC 1108 or just a distant background galaxy. NGC 1108 was found by Lewis Swift on October 31, 1886.
The image contains several galaxy clusters. I've noted them using the Big Cluster Galaxy to identify its location. The cluster's distance is usually noted by photographic redshift, denoted with a "p" while the BCG's redshift has been spectroscopically determined. Both are included with the cluster distance first.
Galaxies identified in NED only with a positional name, usually based on J2000 coordinates, are listed only as G with the redshift look back time travel distance computed using NED's 5 year WMAP calculation and noted in billions of light-years. Quasars are listed as Q with both the light-travel time distance and the redshift z value used in that calculation as astronomers feel light-travel time distances are misleading at such distances. Partly because so many assumptions are needed for the calculation which only a small change could make a rather large difference and because relativity and time passage makes things "interesting" For example (assuming those assumptions are right which is a big if) the quasar to the lower left of FGC 0346 shown with a light travel time distance of 10.65 billion years was only 5.7 billion years from us when the light left it. Since then the expansion of the universe has increased the distance between us until it took the light 10.65 billion years to reach us even though it was nearly half that distance from us when the light started heading our way. Due to that expansion it is estimated the quasar, if it still exists, would be 18 billion light-years from us today! Even without the apparently increasing expansion rate of the universe light leaving it today can never reach us as the distance between us will expand faster than light can travel. And no this doesn't violate Einstein's theory about not being able to travel faster than light. That says we can't travel through space faster than the speed of light but doesn't disallow space itself from expanding faster than this.
14" LX200R @ f/10, L=4x10' RGB=2x10', STL-11000XM, Paramount ME Related Designations for NGC1110NGC 1110, UGCA 043, MCG -01-08-010, FGC 0346, RFGC 0600, SDSS J024909.55-075015.3, SDSS J024909.56-075015.1, SDSS J024909.57-075015.1, IRAS F02467-0802, MBG 02467-0802, USGC S092 NED01, ASK 054644.0, GEMS_N1052_04, HIPASS J0249-07, PGC 010673, PB 09262, LGG 071:[G93] 011, GEMS NGC 1052:[KFB2009] 04, NGC 1108, 2MASX J02483851-0757036, 2MASS J02483853-0757039, SDSS J024838.52-075704.0, SDSS J024838.53-075703.9, SDSS J024838.53-075704.0, SDSS J024838.54-075704.0, GALEXASC J024838.55-075704.1 , GALEXMSC J024838.55-075704.1 , 6dF J0248385-075704, 6dFGSv 01411, LDCE 0193 NED002, ASK 054633.0, GSC 5286 00592, NSA 011268, PGC 010633, [BFW2006] J042.16054-07.95111 , Mr18:[BFW2006] 02551 NED02, Mr19:[BFW2006] 05163 NED01, NGC1110, NGC1108, [PJY2015] 587727179541446671 , | NGC1110L4X10RGB2X10R-ID.JPG
NGC1110L4X10RGB2X10R.JPG
| My first attempt at Arp 200 (April 2009) was not all that great so it went back on the reshoot list. I think this is a great improvement.
Arp 200/NGC 1134 is in Arp's class for galaxies with material ejected from the nuclei. That left me in the dark as to what he is meaning. Is it the tidal arm going west or is the much brighter eastern arm. Then I read his comment which really is confusing: "Splash appearance on western side of galaxy points to low surface brightness companion 7' south." That seems to refer to the tidal arm coming off the northwestern end but it doesn't point south but to the west-northwest. The galaxy to the south is not IC 0267 which is not low surface brightness and is 10 minutes south not 7. But the tidal plume does sort of point to UGC 02362 which is 7 minutes west (I said east by error in the first post) and is a low surface brightness galaxy that does appear possibly highly disturbed as if it did interact with NGC 1134. So I'm going to assume Arp got his directions 90 degrees off (while I was 180 off in my first post!). I've since confirmed with Jeff Kanipe that indeed Arp got his directions wrong. He puts a little triangle in the border of the north side of a galaxy. But he put the little wedge along the eastern side then wrote his comment assuming that was the northern side. Before this, I'd never noticed that wedge or realized its significance when I did see it. Jeff agrees he was referring to the plume going to the west. It was discovered by William Herschel on October 16, 1784. It isn't in either H400 observing program.
I found nothing much on these galaxies indicating whether they were interacting or not. So I'll just say it seems likely but I've been doing this long enough to know that what seems to be the case can be very wrong.
Arp 200 is classed by NED as simply S? and as S by the NGC project. It would seem the plume should give it a peculiar label but that isn't the case. Though it doesn't show in the POSS 1 red plate the NGC project uses. It is listed in the 2MASS catalog so is IR strong. Another indication of possible interaction.
Just under the plume is a fuzzy patch. Is it part of the plume or another galaxy. I found no answer or even a hint of an answer so it remains a big question mark to me.
UGC 02362 is classed as a Magellanic class irregular galaxy. If it interacted with NGC 1134 it may be more irregular than it was but I doubt any interaction caused its irregular condition. It may, however, have triggered the strong star formation that is currently going on it judging by its blue color and the fact it is listed in the 2MASS survey indicating strong IR emission hidden behind dust. Another indication of strong star new star formation.
IC 0267 is classed as (R')SB(s)b by NED. That appears quite reasonable. It too is an IR galaxy in the 2Mass catalog though I see no visible signs of interaction. Nor is any needed to create an IR strong or even starburst galaxy. It was discovered by Lewis Swift on November 8, 1887.
This trio of galaxies all carry about the same redshift. All showing a distance of about 155 million light-years. NED shows no redshift data for any other galaxy in the image. There is an interesting looking pair of galaxies northwest of UGC 02362. The brighter is LEDA 213115 which also is in the 2MASS catalog. Though its close apparent companion is not in NED at all. Is it a true companion or just a line of sight galaxy? I have no idea.
What few other galaxies are listed in NED are all from the 2MASS survey with most being anonymous.
I wasn't going to prepare an annotated image but there are four asteroids in the image, two moving so slowly right at the point of moving from retrograde to prograde motion that they would be impossible to point out otherwise. Their names and magnitudes are on the annotated image so I won't repeat that here.
The field is in some faint galactic cirrus. It was so faint it didn't show on the color filtered frames. I don't see this cirrus on any internet image of the field I found. So at first, I thought it due to a bad flat or gradient from some unknown source. But when I stretched the original frames from 2009 taken with a different camera orientation I could match up the brightest patches perfectly so it is real. It would take a much longer exposure and a much wider field of view than mine to really bring it out.
14" LX200R @ f/10, L=4x10' RGB=2x10', STL-11000XM, Paramount ME Related Designations for NGC1134NGC 1134, UGC 02365, ARP 200, CGCG 440-027, CGCG 0250.9+1248, MCG +02-08-027, 2MASX J02534134+1300508, 2MASS J02534133+1300510, IRAS 02509+1248, IRAS F02509+1248, AKARI J0253414+130049, USGC U153 NED03, HIPASS J0253+12, PGC 010928, UZC J025341.2+130053, UZC-CG 038 NED02, 87GB[BWE91] 0250+1248, [WB92] 0250+1248, NVSS J025341+130053, GB6 J0253+1301, [M98j] 048 NED01, [RHM2006] SFGs 116, IC 0267, UGC 02368, CGCG 440-028, CGCG 0251.1+1238, MCG +02-08-028, 2MFGC 02330, 2MASX J02535024+1250568, 2MASS J02535025+1250575, IRAS 02511+1238, IRAS F02510+1238, AKARI J0253504+125054, USGC U153 NED02, PGC 010932, UZC J025350.3+125058, UZC-CG 038 NED03, NVSS J025350+125056, [M98j] 048 NED02, NGC1134, NGC1134, IC0267, | ARP200-NGC1134L4X10RGB2X102D2-ID.JPG
ARP200-NGC1134L4X10RGB2X102D2.JPG
ARP200-NGC1134L4X10RGB2X102D3-CROP125.JPG
| NGC 1154 and NGC 1155 are a pair of galaxies in western Eridanus about 200 million light-years distant. While it isn't mentioned in the literature that I can find it does appear they are interacting as there's a faint plume that connects the two. I saw a hint of it in the DSS images. It shows up somewhat more clearly in my image. Unfortunately the night I took this had poor seeing so the image is not very detailed. But transparency was pretty good allowing the plume to be seen. At -11 degrees it is too low in my sky for a good image. Maybe someone further south can get a better image of this interaction.
NGC 1154, on the right, is classed as SB with HII emission at NED. The NGC project just says S. NGC 1155 is listed as a lenticular (L) at the NGC project while NED says EL indicating it has elements of both an elliptical and a lenticular galaxy. Since some spiral structure is seen I can't quite agree with this classification. Neither galaxy appears all that distorted by the interaction though NGC 1154 is stretched toward its companion. Is the plume due to stars from only one of the galaxies or both? I have no idea. The pair was discovered by Édouard Stephan on December 15, 1876.
Only one other galaxy in the image is listed by NED with a redshift. That is the obvious elliptical to the lower right, PGC 011187. It is unrelated having a much greater redshift that puts it over twice as distant at a bit over 450 million light-years.
I screwed up when taking this image. I had planned on doing it west of the meridian as I had something else to image first. But as conditions were going down I went with it to the east. My notes said to put it high to also pick up MCG -02-08-033, a really neat spiral. Somehow I forgot that I had to put the pair low when on the east side of the meridian. So I not only moved the pair out of the center but missed the third galaxy I wanted to catch. Still, haven't caught it. I'll try again conditions willing. Its redshift is about the same so might be a member of the system. Another reason I wanted to catch it.
14" LX200R @ f/10, L=4x10' RGB=2x10', STL-11000XM, Paramount ME Related Designations for NGC1154NGC 1154, MCG -02-08-034, 2MASX J02580766-1021479, 2MASS J02580769-1021477, GALEXASC J025807.70-102147.1 , GALEXMSC J025807.69-102146.4 , MBG 02557-1033, 6dF J0258076-102148, 6dF J0258077-102148, LDCE 0213 NED002, HDCE 0197 NED002, USGC S106 NED02, KOS SP6 009, APMUKS(BJ) B025542.67-103348.7, GSC 5290 01018, HOLM 064A, PGC 011221, NVSS J025807-102147, [PCM2000] 23 NED01, NGC 1155, MRK 1064, MCG -02-08-035, 2MASX J02581308-1021019, 2MASS J02581308-1021021, GALEXASC J025813.09-102101.7 , GALEXMSC J025813.05-102101.1 , IRAS 02557-1033, IRAS F02557-1033, AKARI J0258129-102101, MBG 02558-1032, 6dF J0258131-102102, LDCE 0213 NED003, HDCE 0197 NED003, USGC S106 NED01, KOS SP6 008, APMUKS(BJ) B025547.96-103257.4, GSC 5290 01024, HOLM 064B, PGC 011233, NVSS J025812-102103, [PCM2000] 23 NED02, NGC1154, NGC1155, | NGC1154-5L4X10RGB2X10.JPG
NGC1154-5L4X10RGB2X10CROP150.JPG
| NGC 1156 is a nearby Magellanic dwarf galaxy in Aries. While it is nearby I can't put a very definite number on its distance. Redshift would indicate about 8 million light-years. Tully Fisher measurements say a bit over 20 million light-years. One paper assumes 6 million light-years, another 25 million light-years. Pick a number! It was discovered by William Herschel on November 13, 1786. it is in the second H400 observing program.
An amateur processed HST image of this galaxy shows many HII regions though several ground based papers talk of only two. So I suppose it wasn't surprising my LRGB image failed to pick up any of the H alpha emissions associated with the blue star clusters in my image but for a hint of it near the southwest end of the galaxy. I'll have to add some H alpha in the filtered data and see if that helps any. The HST image can be found at: http://upload.wikimedia.org/wikipedia/commons/f/f5/NGC1156-hst-R658GB625.jpg Big file!
NGC 1156 apparently has an invisible companion, a dark galaxy. These consist of huge amounts of neutral hydrogen seen only in radio telescopes but few if any stars. It too seems to be a dwarf galaxy. Other than that NGC 1156 appears to be traveling alone through space. http://www.spacedaily.com/reports/Arecibo_Survey_Produces_Dark_Galaxy_Candidate.html
Only 2 other galaxies in my image have any redshift data so I didn't prepare an annotated image. The "large" galaxy near the right edge a bit higher than NGC 1156 is UGC 02442 at about 460 million light-years. Near the top right are a pair of galaxies, the upper a quite red spindle. Below it is V Zw 298 also at 460 million light-years. The red spindle is 2MASX J02584323+2524381, an infrared emitting galaxy. No redshift data is available for it, however.
To the southwest of NGC 1156 is an interesting, apparently very distant, curving chain of galaxies. They aren't listed at NED so I can't tell you anything about them.
14" LX200R @ f/10, L=4x10' RGB=2x10'x3, STL-11000XM, Paramount ME Related Designations for NGC1156NGC 1156, UGC 02455, VV 531, CGCG 485-006, CGCG 0256.8+2503, MCG +04-08-006, 2MASX J02594283+2514282, 2MASXi J0259426+251417, IRAS 02567+2502, IRAS F02567+2502, AKARI J0259421+251407, KIG 0121, 2MIG 0360, LDCE 0160 NED015, ADBS J025942+2514, AGES J025942+251430, HIPASS J0259+25, PGC 011329, UZC J025942.8+251427, 11HUGS 056, NVSS J025942+251419, ALFALFA 4-539, [SPB93] 037, [TCW2007] 023, NGC1156, | NGC1156L4X10RGB2X10X3R-CROP150.JPG
NGC1156L4X10RGB2X10X3R.JPG
| NGC 1160 and NGC 1161 are two galaxies in Perseus. They don't appear to be interacting and have rather different distance estimates. NGC 1160 is classed as SBc in one place at NED and Scd another. Notes at NED also say it isn't barred and go with the Scd label though the NGC project says it isn't barred it does differ saying it is Sc. I see a hint of a bar in my image so will say it has a bar. Redshift puts it at 110 million light-years while other measurements cluster around 100 million light-years. Rather good agreement.
NGC 1161 surprised me when I started to process it. NED and others all say it is S0, LINER and Sy2 (some say 1.9) galaxy with HII emission. I expected a rather featureless oval. But it turns out to have a rather interesting absorption ring in its disk. Even more surprising is the HST image of the region inside this absorption ring. HST resolution shows the inner disk to be very flocculant. Not at all what I expected. I've attached a mono image from data at the HST Legacy site. I don't know who processed it. It wasn't me. NGC 1160 is a rather flocculant galaxy as well. I knew that going in but finding NGC 1161 is as well came as a surprise. NGC 1161 has a redshift distance of about 80 million light-years. I found no other distance estimates for it.
Both galaxies were discovered by William Herschel on October 7, 1784. NGC 1161 is in the second H400 observing program.
NED has little distance data on the other galaxies in the field with only two others having this information. Rather than just label those two I labeled every one that NED listed. For some reason, NED doesn't include the extended PGC catalog. Some of those galaxies are in The Sky but not NED which I used. Some of these are labeled with a question mark.
14" LX 200R @ f/10, L=4x10' RGB=2x10', STL-11000XM, Paramount ME Related Designations for NGC1160NGC 1160, UGC 02475, CGCG 540-027, CGCG 0257.9+4446, MCG +07-07-014, 2MASX J03011325+4457195, 2MASXi J0301130+445717, 2MASS J03011319+4457186, 2MASS J03011320+4457195, IRAS 02579+4445, IRAS F02578+4445, AKARI J0301134+445719, ISOSS J03011+4457, KPG 086A, LDCE 0224 NED100, NSA 155371, PGC 011403, UZC J030113.2+445718, NVSS J030113+445717, [SLK2004] 0366, [WGB2006] 025754+44460_a, NGC 1161, UGC 02474, CGCG 540-026, CGCG 0257.9+4443, MCG +07-07-015, 2MASXi J0301141+445350, 2MASS J03011415+4453505, IRAS 02579+4442, IRAS F02578+4441, AKARI J0301141+445351, KPG 086B, LQAC 045+044 001, NSA 133005, PGC 011404, UZC J030114.1+445350, NVSS J030114+445351, [VCV2001] J030114.2+445350, [BTW2003] J0259+4452, [VCV2006] J030114.2+445350, [WGB2006] 025754+44460_b, NGC1160, NGC1161, | NGC1160L4X10RGB2X10.JPG
NGC1160L4X10RGB2X10CROP125.JPG
NGC1160L4X10RGB2X10ID.JPG
ngc1161hst.jpg
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