Morphological classification and structural parameters for early-type galaxies in the Coma cluster
نویسندگان
چکیده
منابع مشابه
Morphological classification and structural parameters of galaxies in the Coma and Perseus clusters⋆
We present the results of an isophotal shape analysis of galaxies in the Coma and Perseus clusters. These data, together with those of two previous papers, provide two complete samples of galaxies with reliable Hubble types in rich clusters: 1) all galaxies brighter than mb = 16.5 falling within one degree (=2.3 Mpc) from the center of the Coma cluster (187 galaxies), 2) all galaxies brighter t...
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We have looked for differences in the galaxy properties along the Hubble sequence and for the dependence of these properties on the environment, in an absolute magnitude complete sample of 187 galaxies in the Coma cluster. The morphological type of all galaxies was determined from our own high resolution data. We also compared this sample with other published complete samples of galaxies in the...
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The Coma cluster is one of the richest known cluster of galaxies, spanning about 4 dex in density. Hence it is the ideal place to study the structure of galaxies as a function of environmental density in order to constrain the theories of galaxy formation and evolution. For a magnitude limited sample of 35 E and S0 galaxies we obtained long slit spectra to derive the rotation curves, the veloci...
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We report the results of a high quality spectral study of early-type galaxies within the Coma Cluster core. Stellar population analysis using Lick/IDS indices to break the age/metallicity degeneracy are presented, probing their formation history and properties. A clear metallicity trend and a dominant single age population are found.
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We present spectra of nine low-luminosity early-type galaxies (MB > −17.5) in the Coma cluster. The spectra, which were obtained with the Multiple Mirror Telescope and cover the spectral region 3300-5350 Å, exhibit a large variation in Balmer line strengths. In fact the line strength variation among the Coma low-luminosity galaxies is as large as that found among a sample of low-luminosity elli...
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ژورنال
عنوان ژورنال: Astronomy and Astrophysics Supplement Series
سال: 1996
ISSN: 0365-0138,1286-4846
DOI: 10.1051/aas:1996126