HCG 87 is a compact group of galaxies listed in the Hickson Compact Group Catalogue. This group is about 400 million light-years away in the constellation Capricornus. The group distinguishes itself as one of the most compact groups of galaxies, hosting two active galactic nuclei and a starburst among its three members, all of which show signs of interaction.Noll, Keith. 07/1999. "Hubble Heritage observations of Hickson Compact Galaxy Group 87". This interaction, which astronomers have called visually, and scientifically, intriguingEnglish, J. et al. 05/2000. "A Minuet of Galaxies: Hickson Compact Group 87 as Viewed by the Hubble Space Telescope". American Astronomical Society, 195th AAS Meeting, #136.04; Bulletin of the American Astronomical Society, Vol. 32, p.884. is being examined to understand the influence of active nuclei on star formation histories.
Members
+Members of the HCG 87 Name Type R.A. (J2000) Dec. (J2000) Redshift (km/s) Apparent Magnitude HCG 87a S0 pec 8443 ± 14 15.3 HCG 87b SA(r)0 pec 8740 ± 20 15.4 HCG 87c Sb 8914 ± 7 16.1 HCG 87d Sd 10200 ± 160 17.8
External links Astronomy Picture of the Day Galaxy Group HCG 87 – 2003 July 31 HCG 87: A Small Group of Galaxies – 2010 July 6 Close-ups of HCG 87 Galactic Clusters Studies of Hickson Compact Groups
References