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Colour and stellar population gradients in galaxies


Tortora, C; Napolitano, N R; Cardone, V F; Capaccioli, M; Jetzer, P; Molinaro, R (2012). Colour and stellar population gradients in galaxies. Memorie della Societa Astronomica Italiana, Sup19:298-301.

Abstract

We discuss the colour, age and metallicity gradients in a wide sample of local SDSS early- and late-type galaxies. From the fitting of stellar population models we find that metallicity is the main driver of colour gradients and the age in the central regions is a dominant parameter which rules the scatter in both metallicity and age gradients. We find a consistency with independent observations and a set of simulations. From the comparison with simulations and theoretical considerations we are able to depict a general picture of a formation scenario.

Abstract

We discuss the colour, age and metallicity gradients in a wide sample of local SDSS early- and late-type galaxies. From the fitting of stellar population models we find that metallicity is the main driver of colour gradients and the age in the central regions is a dominant parameter which rules the scatter in both metallicity and age gradients. We find a consistency with independent observations and a set of simulations. From the comparison with simulations and theoretical considerations we are able to depict a general picture of a formation scenario.

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Additional indexing

Item Type:Journal Article, not refereed, original work
Communities & Collections:07 Faculty of Science > Institute for Computational Science
Dewey Decimal Classification:530 Physics
Language:English
Date:2012
Deposited On:22 Jan 2013 07:50
Last Modified:05 Apr 2016 16:18
Publisher:Società Astronomica Italiana
ISSN:0037-8720
Related URLs:http://sait.oat.ts.astro.it/

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