5 papers · 1 filter
To what Extent are Mg2 and <Fe> indicators of Mg and Fe Abundances?
R. Tantalo, A. Bressan, C. Chiosi
The gradients in line strength indices such as Mg2 and <Fe> (Carollo & Danziger 1994a,b; Carollo et al. 1993), and their increase toward massive system (Worthey et al. 1992, Faber…
Ages and Metallicities in Elliptical Galaxies from the H_beta, <Fe>, and Mg2 Diagnostics
R. Tantalo, C. Chiosi, A. Bressan
Systematic variations in the line strength indices H_beta, Mg2, and <Fe> are observed across elliptical galaxies and from one object to another. Furthermore arguments are given for…
Spectro-Photometric Evolution of Elliptical Galaxies. III. Infall models with gradients in mass and star formation
R. Tantalo, C. Chiosi, A. Bressan +2
In this study we present a simple model of elliptical galaxies aimed at interpreting the gradients in colours and narrow band indices observed across these systems. Salient feature…
Models of Galaxy Evolution from the UV to the Sub-Millimeter
Gian Luigi Granato, Laura Silva, Lugi Danese +3
We present the first results of a detailed modeling of chemical and photometric evolution of galaxies including the effects of a dusty interstellar medium. A chemical evolution cod…
Diagnostic of chemical abundances and ages from the line strength indices Hb, <Fe>, and Mg2: what do they really imply ?
R. Tantalo, A. Bressan, C. Chiosi
The line strength indices Hb, Mg2, and <Fe>, together with their gradients and dependence on the galaxy luminosity (mass), observed in elliptical galaxies are customarily considere…