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1. Evidence for Merger Signatures in the Line-Strength Gradients of Elliptical Galaxies: 2. A Universal relation Between Metallicity and Potential Depth for All Hot Stellar Systems?

Published online by Cambridge University Press:  07 August 2017

Ralf Bender
Ralf Bender*
Affiliation:
Landessternwarte Königstuhl D-6900 Heidelberg, Germany

Abstract

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In the first part of this paper it is shown that those giant ellipticals which presumably formed in a violent merging process (as inferred from their peculiar core kinematics) reflect the details of the merging in their Mg2-index profiles. In the second part it is demonstrated that, independent from other structural parameters, central Mg2 index and central velocity dispersion σo (presumably representing the mean depth of the potential well) follow a unique relationship for all types of hot stellar systems (including diffuse dwarf ellipticals, compact ellipticals, bulges and giant ellipticals).

Type
III. The Stellar Populations of Non-Resolved Galaxies
Information
Symposium - International Astronomical Union , Volume 149: The Stellar populations of Galaxies , 1992 , pp. 267 - 270
Copyright
Copyright © Kluwer 

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