Object name: ABELL0194

Designation(s): ABELL0194, NGC0530, NGC0535, NGC538, NGC0541, NGC0543, ARP308, NGC0547, NGC0557, MINKOWSKIS_OBJECT, IC1696,

I took this area of the sky several years ago but wasn't happy with the color so gave it another try though the clouds did another number on it the result is a bit better. Abell 194 is a galaxy cluster a bit under a quarter of a billion light-years distant seen in the constellation of Cetus so runs rather low in my sky which doesn't help. It is far larger than my field of view being 3.75 degrees across. I aimed pretty much for the center which put its two Arp Atlas entries a bit off center to the upper left. Some of the text below is from my original attempt on this area.

Arp 133 falls under Arp's very odd category of galaxies with nearby fragments. It consists of two galaxies; NGC 541, the large cD/S0 galaxy and the "fragment". They lie to the southwest of a pair of elliptical galaxies that are Arp 308. The "fragment" is the very blue dwarf galaxy to its northeast (upper left). This is not a fragment at all but a dwarf galaxy undergoing extreme starburst star formation. It is known as Minkowski's Object. NGC 541 is a radio galaxy with jets. One is directed directly at Minkowski's Object and is credited with triggering the starburst activity. Minkowski's Object has a different redshift but this is more an indication of relative velocity than a real distance difference. Arp 133 with its blue companion galaxy is almost identical in appearance to the much nearer Arp 134 (M49 and its blue "fragment" UGC 07636.) Both give me the impression that the "fragment" is a bug splat on the leading edge of a "solid" galaxy that ran into it.

Arp had no knowledge of this at the time of his image. His image carries a note that it was taken with a "Polaroid" filter. I assume he means polarizing filter. How it was aligned it doesn't say. Arp's comment on the image reads: "Central member of galaxy group associated with 3C40." 3C40 is a strong radio source but not the radio source involved with the starburst activity in Minkowski's Object. But it does bring us to Arp 308.

Arp 308 is a pair of galaxies; NGC 545 and NGC 547 that are associated with the radio source 3C40. That is NGC 547 is considered to be the source of 3C40 along with the small galaxy CGG 385-129 to the west. Arp put the NGC pair in his category of simply double galaxies. His simple remark says: "Close ellipticals." which isn't very informative. NGC 545 to the north is listed as an SA0 galaxy while NGC 547 is E1 and a bright cluster galaxy. Redshift puts it at 6 million light-years further from us than NGC 545. However, NED gives a D-Sigma distance determination that is the same for both. Likely the difference in radial velocity is due to relative motion rather than distance. The exact same D-Sigma distance is found for NGC 541 (Arp 133) as well. Several sources say the pair are not interacting. It does appear to me that NGC 547 lies in front of NGC 545 based on the dark band between their cores which could be caused by dust in NGC 547 blocking the light of NGC 545 behind it.

NGC 519, 538, 557 was discovered by Lewis Swift on November 20, 1886
NGC 535, 543 was discovered by Heinrich d'Arrest on October 31, 1864
NGC 541 (Arp 133) was discovered by Heinrich d'Arrest on October 30, 1864
NGC 545, 547 (Arp 308) was discovered by William Herschel on October 1, 1785

Neither of Herschel's discoveries are in either H400 observing program.

There's one asteroid in the image. Its information is noted in the annotated image.

The annotated image includes the classification of each galaxy by NED. That of the NGC project for NGC galaxies is listed after the NED classification if different. When the same there is no second entry. Note only NGC galaxies are classified by the NGC Project.

Arp's image of Arp 133 with an asteroid trail:

Arp's image of Arp 308

My image from November 2011

14" LX200R @ f/10, L=4x10' RGB=2x10' STL-11000XM, Paramount ME

Related Designation(s):

1WGA J0126.0-0120, 2MASS J01244166-0135135, 2MASS J01245234-0137012, 2MASS J01252605-0133024, 2MASS J01253113-0124294, 2MASS J01253127-0124278, 2MASS J01254430-0122460, 2MASS J01254998-0117340, 2MASS J01260061-0120426, 2MASS J01262514-0138192, 2MASX J01244163-0135134, 2MASX J01245237-0137014, 2MASX J01252603-0133021, 2MASX J01253116-0124291, 2MASX J01254430-0122461, 2MASX J01254997-0117341, 2MASX J01260057-0120424, 2MASX J01262516-0138195, 2MASXi J0124416-013513, 2MASXi J0124523-013701, 2MASXi J0125260-013302, 2MASXi J0125311-012429, 2MASXi J0125443-012246, 2MASXi J0125499-011734, 2MASXi J0126006-012042, 2MASXi J0126251-013819, 2MFGC 01088, 2XMM J012544.3-012245, 2XMM J012600.5-012041, 2XMMp J012544.3-012246, 2XMMp J012600.5-012041, 3C 040, 4C -01.08, 6dF J0124524-013701, 6dF J0126006-012043, 6dF J0126252-013819, 6dFGSv 00786, 6dFGSv 00800, 87GB[BWE91] 0123-0136, ABELL 0194, ABELL 0194:[ASS80] 01, ABELL 0194:[ASS80] 02, ABELL 0194:[ASS80] 03, ABELL 0194:[ASS80] 04, ABELL 0194:[ASS80] 05, ABELL 0194:[ASS80] 06, ABELL 0194:[ASS80] 10, ABELL 0194:[D80] 017, ABELL 0194:[D80] 018, ABELL 0194:[D80] 023, ABELL 0194:[D80] 025, ABELL 0194:[D80] 034, ABELL 0194:[D80] 035, ABELL 0194:[D80] 037, ABELL 0194:[D80] 042, ABELL 0194:[D80] 053, ABELL 0194:[HKT2006] 01, ABELL 0194:[HKT2006] 08, ABELL 0194:[L84] G2, ABELL 0194:[LCR98] 03, ABELL 0194:[LCR98] 12, ABELL 0194:[LGC91] 0105, ABELL 0194:[LGC91] 0110, ABELL 0194:[LGC91] 0116, ABELL 0194:[LGC91] 0118, ABELL 0194:[LGC91] 0121, ABELL 0194:[LGC91] 0132, ABELL 0194:[NDG99] A, ABELL 0194:[NDG99] B, ABELL 0194:[NFS85] 104, ABELL 0194:[ZBO89] O1 NED01, ABELL 0194:[ZBO89] O2, ABELL 0194:[ZBO89] R2, ABELL 0194:[ZH64] 02, ABELL 0194:[ZH64] 03, ABELL 0194:[ZH64] 04, ABELL 0194:[ZH64] 06, ABELL 0194:[ZH64] 10, ABELL 0194:[ZH64] 13, ABELL 0194:[ZH64] 17, ABELL 0194:[ZH64] 24, ABELL0194, APMUKS(BJ) B012219.32-015237.4, APMUKS(BJ) B012311.26-013820.9, APMUKS(BJ) B012314.23-013754.6, APMUKS(BJ) B012316.83-013308.8, APMUKS(BJ) B012326.77-013606.0, APMUKS(BJ) B012352.10-015352.6, ARP 133, ARP 308, ARP 308 NED02, ARP308, AT20G J012600-012041, BMW-HRI J012600.2-012040, BMW-HRI J012600.4-012039, BMW-HRI J012600.7-012040, CGCG 0122.1-0150, CGCG 0122.3-0152, CGCG 0122.9-0148, CGCG 0123.0-0139, CGCG 0123.2-0137, CGCG 0123.3-0132, CGCG 0123.5-0136, CGCG 0123.8-0154, CGCG 385-108, CGCG 385-113, CGCG 385-120, CGCG 385-124, CGCG 385-128, CGCG 385-130, CGCG 385-133, CGCG 385-136, CTA 012, CXO J012544.3-012246, CXO J012600.6-012024, CXO J012600.6-012042, DA 042, EXSS 0123.4-0135, GALEXASC J012441.61-013512.2 , GALEXASC J012452.36-013700.0 , GALEXASC J012526.06-013302.1 , GALEXASC J012531.21-012427.4 , GALEXASC J012549.98-011733.9 , GALEXASC J012625.08-013819.9 , GALEXMSC J012441.65-013512.8 , GALEXMSC J012452.33-013700.0 , GALEXMSC J012526.02-013301.8 , GALEXMSC J012531.09-012429.5 , GALEXMSC J012549.84-011738.5 , GALEXMSC J012624.99-013818.8 , HDCE 0075 NED005, HDCE 0075 NED006, HDCE 0075 NED009, HDCE 0075 NED010, HDCE 0075 NED013, HDCE 0075 NED014, HDCE 0075 NED015, HDCE 0075 NED016, HOLM 042, HOLM 042B, IC 0106, IC 1696, IC 1703, IC1696, KPG 032, KPG 032B, LDCE 0089 NED006, LDCE 0089 NED007, LDCE 0089 NED010, LDCE 0089 NED011, LDCE 0089 NED014, LDCE 0089 NED015, LDCE 0089 NED016, LDCE 0089 NED017, LEDA 073947, LEDA 073957, LGG 022:[G93] 003, LGG 022:[G93] 006, LGG 025:[G93] 002, LGG 025:[G93] 010, LGG 025:[G93] 011, LGG 025:[G93] 015, LHE 029, LQAC 021-001 005, MCG +00-04-119, MCG +00-04-122, MCG +00-04-130, MCG +00-04-133, MCG +00-04-137, MCG +00-04-138, MCG +00-04-143, MCG +00-04-144, MCXC J0125.6-0124, MINKOWSKIS OBJECT, MSH 01-005, NGC 0530, NGC 0535, NGC 0538, NGC 0541, NGC 0543, NGC 0547, NGC 0557, NGC0530, NGC0535, NGC0541, NGC0543, NGC0547, NGC0557, NGC538, NRAO 0070, NSA 129449, NSA 129471, NSA 129548, NSA 129556, NSA 129581, NSA 129590, NSA 129602, NSA 129641, NVGRC J012600.6-012052, NVSS J012543-012241, NVSS J012600-012052, OC -039, PGC 005210, PGC 005231, PGC 005275, PGC 005282, PGC 005305, PGC 005311, PGC 005324, PGC 005351, PKS 0123-01, PKS B0123-016, PKS J0126-0120, RASSCALS SRGb 103, RSCG 10:[WBJ2013] A, RSCG 11:[WBJ2013] A, RSCG 11:[WBJ2013] C, RSCG 11:[WBJ2013] D, RXC J0125.6-0124, RXC J0125.6-0125, S3 0123-01, SDSS J012441.65-013513.4, SDSS J012452.36-013701.4, SDSS J012526.05-013302.3, SDSS J012544.31-012246.4, SDSS J012547.03-012218.4, SDSS J012547.39-012221.0, SDSS J012549.99-011734.1, SDSS J012600.63-012042.5, SDSS J012625.12-013819.2, SDSS J012625.15-013819.3, SSTSL2 J012544.28-012246.2, SSTSL2 J012547.34-012220.9, SSTSL2 J012600.61-012042.4, UGC 00965, UGC 00973, UGC 00991, UGC 00997, UGC 01004, UGC 01009, UGC 01016, UGCl 025, USGC U064, USGC U064 NED01, USGC U064 NED02, USGC U064 NED04, USGC U064 NED05, USGC U064 NED06, USGC U064 NED11, USGC U064 NED31, USGC U064 NED37, UZC J012441.7-013515, UZC J012452.3-013701, UZC J012526.1-013303, UZC J012531.1-012430, UZC J012544.3-012247, UZC J012550.0-011734, UZC J012600.6-012046, UZC J012625.1-013820, WBL 045-005, WBL 045-007, WBL 045-010, WBL 045-013, WBL 045-016, WBL 045-017, WBL 045-020, WBL 045-023, XMMU J012544.2-012247, XMMU J012600.5-012043, ZwCl 0123.6-0133, [BDG98] J012441.7-013516, [BDG98] J012452.4-013702, [BDG98] J012526.1-013303, [BDG98] J012531.2-012430, [BDG98] J012544.4-012247, [BDG98] J012547.4-012221, [BDG98] J012550.0-011735, [BDG98] J012600.6-012043, [BDG98] J012625.1-013820, [DZ2015] 535-01, [DZ2015] 535-02, [DZ2015] 535-03, [DZ2015] 535-05, [DZ2015] 535-06, [DZ2015] 535-08, [DZ2015] 535-10, [DZ2015] 541-01, [GD2000] 4, [GD2000] 6, [GD2000] 7, [HBW2011] J012600.62-012042.5 , [KWP81] 0123-01, [LPP2009] 0123-016A, [LPP2009] 0123-016B, [LSL2000] +0123.4-01.60, [M98j] 021 NED02, [M98j] 021 NED03, [M98j] 021 NED05, [MSC2011] J012600.36-012038.2 , [OSO87] 0123-016A, [SM2000] 0123-016B, [WB92] 0123-0136,