NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-16 T20:20:52 PDT
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For refcode 1992MNRAS.255p..29v:
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NED Abstract

Copyright by Royal Astronomical Society. 1992MNRAS.255p..29v Galaxy evolution and the Local Group Sidney van den Bergh Dominion Astrophysical Observatory. National Research Council, 5071 West Saanich Road, Victoria, BC, V8X 4M6, Canada Accepted 1992 February 6. Received 1992 January 24 SUMMARY More than half of the known members of the Local Group are either ellipticals or dwarf spheroidals. Such galaxies have already converted >~ 99 per cent of their baryonic mass into stars. With the exception of the SMC, all of the remaining spiral and elliptical members of the Local Group have converted approximately 90-99 percent of their baryonic mass into stars. If the Local Group is a fair sample of the Universe then this suggests that most galaxies are already `retired' or `semi-retired'. Only a few per cent of all galaxies are still in their star-forming prime. This may explain why blue galaxies are observed to be much more frequent in the recent past than, they are at the present time. Key words: galaxies: evolution - Local Group - Magellanic Clouds.
Retrieve 27 NED objects in this reference.
Please click here for ADS abstract

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