Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Abundance Ratios in Stars vs. Hot Gas in Elliptical Galaxies: the
  Chemical Evolution Modeller Point of View   I will present predictions from chemical evolution model aimed at a
self-consistent study of both optical (i.e. stellar) and X-ray (i.e.gas)
properties of present-day elliptical galaxies. Detailed cooling and heating
processes in the interstellar medium (ISM) are taken into and allow a reliable
modelling of the SN-driven galactic wind. SNe Ia activity, in fact, may power a
galactic wind lasting for a considerable amount of the galactic lifetime, even
in the case for which the efficiency of energy transfer into the ISM per SN Ia
event is less than unity. The model simultaneously reproduces the
mass-metallicity, the colour-magnitude, the L_X - L_B and the L_X - T
relations, as well as the observed trend of the [Mg/Fe] ratio as a function of
sigma, by adopting the prescriptions of Pipino & Matteucci (2004) for the gas
infall and star formation timescales. The "iron discrepancy", namely the too
high predicted iron abundance in X-ray haloes of ellipticals compared to
observations, can be solved by taking into account the existence of dust. I
will make predictions on several abundance ratios in the ISM and compare them
with the most recent observations.

16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs