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arXiv · 1010.1007

Colour and stellar population gradients in galaxies

C. Tortora·N. R. Napolitano·V. F. Cardone·M. Capaccioli·P. Jetzer·R. Molinaro
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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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C. Tortora, N. R. Napolitano, V. F. Cardone, M. Capaccioli, P. Jetzer, R. Molinaro. 2010-10-05. Colour and stellar population gradients in galaxies. https://arxiv.org/abs/1010.1007

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