Object name: ARP171

Designation(s): ARP171, NGC5718, IC1042, IC1039, IC1041, IC1043,

Arp 171 and the galaxy cluster it anchors is located about 380 million light-years distant in the northeastern corner of Virgo. I rarely reshoot an object. There are so many new ones yet to explore I usually don't redo something. I made an exception in this case. Partly because the framing the first time missed some interesting galaxies and galaxy clusters to the north and secondly because conditions weren't great the first time so I didn't pick up much of the plumes. I'd hoped to add this data to the earlier image for the area of Arp 171's plumes. Unfortunately, the data was so unequal it seemed to hurt the plumes rather than help them so I gave up that attempt. Apparently, most of what I thought were plumes were mostly over processed noise in the original image.

A new study says that while all stars formed in galaxies, half of them have been ripped from their home galaxy and now live alone in space. Many of the stars in these plumes may be destined for this same fate, never to fall back into their birth galaxy.

Arp 171 consists of the two interacting galaxies IC 1042 and NGC 5718. Both are S0 rather than elliptical galaxies. Though there's some question about this indicated by the ? and : in the two classifications. NGC 5718 is the bright cluster galaxy anchoring the large galaxy cluster SDSS-C4-DR3 1014. Ned shows it with 105 members but gives no size. It certainly is larger than my image.
Arp put this pair under his heading for Galaxies with diffuse counter-tails. Arp's image strangely is framed such that most of the plumes lie outside its edges. While the edges of the plumes are rather fuzzy, especially to the northwest I'm quite confident it measures more than 1 million light-years across. I can't recall measuring any coming even close to this size.

NGC 5718 was discovered by William Herschel on April 30,l 1786. It isn't in either program. IC 1042, IC 1039, IC1041 and IC 1043 were found by Stephane Javelle on May 28, 1891.

For laughs, my pathetic first attempt from 2010 is at:

The field is very crowded with annotated objects. In a few cases, I've drawn a line to an object when it appears that wasn't necessary, as in the case of the UvES object at 9.45p billion light-years. If you look very closely you will find two objects at these locations with the line going to the one that is labeled. So if a line appears unnecessary or seems off center look closer and you'll find a second object is involved. NED listed quite a few Emission Line Galaxies. They were mostly very faint and hard to see on the processed image. Most were at distances of 4 to 8 billion light-years. Since the image was already rather cluttered I listed only a very few of them to give a sampling of what they are like. I omitted about 100 of these as it would have made the image so cluttered as to be nearly useless.

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

Related Designation(s):

2MASS J14402938+0325579, 2MASS J14403790+0322371, 2MASS J14403900+0328106, 2MASS J14404286+0327553, 2MASS J14404335+0322262, 2MASX J14402938+0325581, 2MASX J14403793+0322375, 2MASX J14403900+0328105, 2MASX J14404287+0327555, 2MASX J14404334+0322265, 2XMM J144029.3+032557, 2XMM J144038.0+032238, 2XMM J144043.0+032757, 2XMM J144043.3+032226, ARP 171, ARP 171 NED01, ARP 171 NED02, ARP171, ASK 100847.0, ASK 100886.0, ASK 101414.0, ASK 101416.0, ASK 101428.0, CGCG 047-133, CGCG 047-134, CGCG 047-135, CGCG 047-137, CGCG 1438.0+0338, CGCG 1438.1+0335, CGCG 1438.1+0340, CGCG 1438.2+0340, ECO 06539, GALEX J144042.8+032755, GALEXASC J144037.98+032237.9 , GALEXASC J144039.14+032813.2 , GALEXASC J144042.91+032754.3 , GALEXASC J144043.42+032227.5 , GALEXMSC J144029.35+032557.2 , GALEXMSC J144038.00+032239.1 , GALEXMSC J144039.15+032812.0 , GALEXMSC J144043.61+032229.6 , GASS 09702, HDCE 0885 NED001, HDCE 0885 NED002, HDCE 0885 NED003, IC 1039, IC 1041, IC 1042, IC 1043, IC1039, IC1041, IC1042, IC1043, IC1043OLD, IRAS F14381+0335, KIG 0638:[VOV2007] 023, KIG 0638:[VOV2007] 024, KIG 0638:[VOV2007] 029, KIG 0638:[VOV2007] 036, KIG 0638:[VOV2007] 037, KPG 431, KPG 431A, KPG 431B, LDCE 1075 NED003, LDCE 1075 NED004, LDCE 1075 NED005, LEDA 2800989, MAPS-NGP O_561_3099118, MAPS-NGP O_561_3229491, MAPS-NGP O_561_3229903, MCG +01-37-045, MCG +01-37-046, MCG +01-37-047, MKW 08:[ZAC2011] BCG, Mr18:[BFW2006] 01968 NED29, Mr18:[BFW2006] 01968 NED32, Mr18:[BFW2006] 01968 NED33, Mr19:[BFW2006] 04360 NED30, Mr19:[BFW2006] 04360 NED32, Mr19:[BFW2006] 04360 NED34, Mr19:[BFW2006] 04360 NED35, Mr20:[BFW2006] 07850 NED04, Mr20:[BFW2006] 07850 NED06, Mr20:[BFW2006] 07850 NED07, Mr20:[BFW2006] 07850 NED08, NFP J144029.4+032558, NFP J144043.4+032227, NGC 5718, NGC5718, NPM1G +03.0443, NPM1G +03.0444, NSA 018111, NSA 018120, NSA 018138, NSA 018274, NVSS J144042+032801, PGC 052428, PGC 052433, PGC 052434, PGC 052441, RX J1440.6+0327:[CAE99] a, RX J1440.6+0327:[CAE99] b, RX J1440.6+0328:[BEV98] 014, RX J1440.6+0328:[ZEH2003] 02 , SAFIRES J144037.89+032238.2, SDSS J144029.40+032557.8, SDSS J144029.40+032557.9, SDSS J144037.89+032237.2, SDSS J144037.89+032237.3, SDSS J144037.90+032237.2, SDSS J144037.90+032237.3, SDSS J144039.01+032810.9, SDSS J144039.01+032811.0, SDSS J144042.83+032755.2, SDSS J144042.83+032755.5, SDSS J144042.83+032756.0, SDSS J144043.35+032226.4, SDSS J144043.35+032226.5, SSTSL2 J144037.90+032237.5, UGC 09457, UGC 09459, USGC U646 NED06, USGC U646 NED07, USGC U646 NED08, USGC U646 NED09, UZC J144037.9+032238, UZC J144039.0+032811, UZC J144042.9+032755, UZC J144043.3+032227, UZC-CG 225 NED01, UZC-CG 225 NED02, UZC-CG 225 NED03, WBL 514:[HIV2012] 0311, WBL 514:[HIV2012] 0337, WBL 514:[HIV2012] 0424, WBL 514:[HIV2012] 0426, WBL 514:[HIV2012] 0433, WBL 518-002, WBL 518-003, WBL 518-004, WBL 518-005, [BFW2006] J220.12251+03.43275 , [BFW2006] J220.15790+03.37703 , [BFW2006] J220.16257+03.46972 , [BFW2006] J220.17848+03.46542 , [BFW2006] J220.18062+03.37402 , [DZ2015] 561-01, [DZ2015] 561-02, [DZ2015] 561-03, [GMM2009] 0225205, [GMM2009] 0349231, [HIV2012] 2817, [HIV2012] 2843, [HIV2012] 2930, [HIV2012] 2932, [HIV2012] 2939, [KG2002] J144029.48+032557.2 , [KG2002] J144037.98+032236.2 , [KG2002] J144039.06+032810.5 , [KG2002] J144042.88+032753.3 , [KG2002] J144043.41+032225.7 , [MGH2008] J144039.0+032811.0 , [MGH2008] J144042.8+032755.5 , [TTL2012] 020083, [TTL2012] 020095, [TTL2012] 033530, [TTL2012] 033925, [TTL2012] 034246,