Query : 2011A&A...530A..98P

2011A&A...530A..98P - Astronomy and Astrophysics, volume 530A, 98-98 (2011/6-1)

Abundance ratios in the hot ISM of elliptical galaxies.


Abstract (from CDS):

We constrain possible explanations of the theoretical Fe discrepancy in the hot interstellar medium of elliptical galaxies and simultaneously explain the [α/Fe] ratios. We use the latest theoretical nucleosynthetic yields, incorporate dust, and explore different SNIa progenitor scenarios by means of a self-consistent chemical evolution model that reproduces the stellar populations properties of elliptical galaxies.Models with Fe-only dust and/or a lower effective SNIa rate achieve a closer agreement with the observed Fe abundance. However, a suitable modification of the SNIa yields relative to the standard W7 model is needed to fully describe the abundance ratio pattern. The 2D explosion model C-DDT by Maeda and collaborator may be capable of reproducing the [Fe/H] and the [α/Fe] ratios.

Abstract Copyright:

Journal keyword(s): ISM: abundances - galaxies: abundances - galaxies: elliptical and lenticular, CD - X-rays: ISM - galaxies: evolution

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
1 M 49 Sy2 12 29 46.798 +08 00 01.48   13.21 12.17     ~ 2034 2
2 NAME Galactic Bulge reg ~ ~           ~ 3929 0

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