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 [2 ] 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. This interaction, which astronomers have called visually, and scientifically, intriguing [3 ] is being examined to understand the influence of active nuclei on star formation histories. [4 ]
Members [ edit ]
External links [ edit ]
References [ edit ]
^ a b "NASA/IPAC Extragalactic Database". Results for HCG 87 . Retrieved . 2006-10-19
^ This redshift corresponds to a distance of 120Mpc or 400 million light years (using H 0 = 75km/s/Mpc and q 0 = 0.1). At the distance of the group, this corresponds to a group diameter of 52kpc, i.e., the group is approximately 170,000 light years across.
^ Noll, Keith. 07/1999. "Hubble Heritage observations of Hickson Compact Galaxy Group 87".
^ English, 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.
^ a b c d e "NASA/IPAC Extragalactic Database". Results for various galaxies . Retrieved . 2006-10-19
Coordinates: 20 h 48 m 11.9 s, −19° 50′ 35″