NGC 68 group

VV 166, sometimes also called the NGC 70 galaxy group or Arp 113, is a cluster of galaxies in Andromeda. The main group was discovered in 1784 by William Herschel, who listed the galaxies as a single object. Later, in the 1880s, John Louis Emil Dreyer managed to discern some of the galaxies in this region and cataloged them.[2] The prominent elliptical galaxy in the region, NGC 68, is probably not a member of the group.

The galaxy group with labels
VV 166
Observation data (Epoch )
Constellation(s)Andromeda
Right ascensionmain group 00h 18m 30s cluster center 00h 18m 45s
Declinationmain group 30° 03 00 cluster center 30° 00 00
Number of galaxies40 (confirmed)
60+ (possible)[1]
Richness classGroup 0/1
Bautz–Morgan classificationtype II/III
Velocity dispersion~6750[1]
Redshift0.019 to 0.025
Distance
(co-moving)
~300 mly
Other designations
[M98j] 003, VV 166, RSCG 01, WBL 007, USCG U012, RASSCALS SRGb 062, PCC S34-115, HOLM 006, SRGb 062, DOC SRGb 062, WP 01, PPS2 060, HDCE 0011

Superimposed on the group is a smaller cluster around 220 mly away, which includes AGC 102760, UGC 152, and UGC 166.

Members

galaxy RA DEC redshift size (ly) distance (mly)
NGC 6700h 18m 12.18s30° 03 17.50.020734[1]40,000275[3]
NGC 67a00h 18m 14.83s30° 03 450.02216235,000300
NGC 6800h 18m 18.48s30° 04 15.40.0191390,000260
NGC 6900h 18m 20.5s30° 02 21.20.02228580,000300
NGC 7000h 18m 22.6s30° 04 440.023907180,000320
NGC 7100h 18m 23.6s30° 03 450.022339130,000300
NGC 7200h 18m 28.36s30° 02 23.70.024213120,000325
NGC 72a00h 18m 34.35s30° 02 080.02239925,000300
NGC 7400h 18m 49.39s30° 03 39.10.02364665,000315
GALEXASC J001817.48+295854.300h 18m 17s29° 58 500.02498130,000[4]335
PGC 118300h 18m 14.05s29° 57 050.02037470,000275
PGC 116300h 17m 46.02s30° 09 4.50.02188575,000295
2MASX J00174636+295740900h 17m 46.3s29° 57 390.02411360,000325
2MASX J00183652+295558600h 18m 36.5s29° 55 55.20.02147530,000290
2MASX J00181971+295437200h 18m 19.67s29° 54 350.02219250,000300
2MASX J00181589+295414500h 18m 15.92s29° 54 12.50.02409345,000325
2MASX J00191196+300050600h 18m 11.97s30° 00 47.80.02345645,000315
2MASX J00191966+300528600h 19m 19.64s30° 05 260.0238960,000320
2MASX J00183355+295027200h 18m 31.52s29° 50 24.30.02098130,000285
2MASX J00174173+295115100h 17m 41.71s29° 51 12.40.02235935,000300
PGC 113800h 17m 17.38s30° 12 30.50.02098855,000285
PGC 111900h 17m 02.63s29° 56 29.70.02311680,000310
NGC 7600h 19m 37.81s29° 55 59.30.02444120,000330
AGC 10276100h 19m 43.83s30° 03 25.50.02359010,000320
2MASX J00164915+301046200h 16m 49.16s30° 10 43.50.02413340,000325
PGC 126600h 19m 43.06s29° 56 4.10.02233945,000300
2MASX J00181849+294200200h 18m 18.47s29° 41 57.70.02274945,000305
2MASX J00194032+294928600h 19m 40.35s29° 49 26.10.02562150,000345
PGC 109000h 16m 32.85s30° 20 42.50.02133185,000290
PGC 122000h 18m 55.28s30° 30 46.60.0240850,000325
2MASX J00160018+300256100h 16m 00.31s30° 02 54.90.02267645,000305
AGC 10011600h 15m 55.55s30° 04 25.20.02237935,000305
PGC 108400h 16m 24.93s30° 22 25.50.02114855,000290
2MASX J00203207+300301300h 20m 32.06s30° 02 58.80.02105835,000285

    References

    1. "objects within 30 arcminutes of NGC 72a". NED. NASA/IPAC. Retrieved 18 May 2014.
    2. Seligman, Courtney. "New General Catalog Objects: NGC 50 - NGC 99". Cseligman.com. Retrieved 18 May 2014.
    3. Wright, Ned. "Ned Wright's Javascript Cosmology Calculator". astro.ucla.edu. UCLA. Retrieved 18 May 2014.
    4. "Angular Size Calculator". www.1728.org. Retrieved 18 May 2014.
    This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.