The structure of spiral galaxies: radial profiles in stellar mass-to-light ratio and the dark matter distribution

Author: Portinari L.   Salucci P.  

Publisher: Edp Sciences

E-ISSN: 1432-0746|521|issue|A82-A82

ISSN: 0004-6361

Source: Astronomy & Astrophysics, Vol.521, Iss.issue, 2010-10, pp. : A82-A82

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Abstract

Context. The colour and metallicity gradients observed in spiral galaxies suggest that the mass-to-light ratio ($M_\star$/L) of the stellar disc is a function of radius. This is indeed predicted by chemo-photometricmodels of galactic discs.