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Group of galaxies in the constellation Serpens From Wikipedia, the free encyclopedia
Seyfert's Sextet is a group of galaxies about 190 million light-years away[2] in the constellation Serpens. The group appears to contain six members, but one of the galaxies, NGC 6027d, is a background object (700 million light years behind the group) and another "galaxy," NGC 6027e, is actually a part of the tail from galaxy NGC 6027. The gravitational interaction among these galaxies should continue for hundreds of millions of years. Ultimately, the galaxies will merge to form a single giant elliptical galaxy.
Seyfert's Sextet | |
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Observation data (Epoch J2000) | |
Constellation(s) | Serpens |
Right ascension | 15h 59m 11.9s[1] |
Declination | +20° 45′ 31″[1] |
Brightest member | NGC 6027 |
Number of galaxies | 4[1] |
Other designations | |
Serpens Sextet, HCG 79, UGC 10116, VV 115, VII Zw 631[1] |
French astronomer Édouard Stephan discovered NGC 6027 on 20 March 1882, but he was unable to resolve the individual galaxies in the group.[3] The group members were discovered by Carl Keenan Seyfert using photographic plates made at the Barnard Observatory of Vanderbilt University. When these results were first published in 1951, this group was the most compact group ever identified.[4]
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