Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the dark matter haloes inner structure and galaxy morphology   In the present paper, we extend the study of Del Popolo (2010) to determine
the slope of the inner density profile of galaxy haloes with different
morphologies. We study how galaxy morphology changes the relation between the
inner slope of the galaxy halo density profile, $\alpha$, and the stellar mass,
$M_{*}$, or rotation velocity $V_{\rm rot}$. For this, we use the model of Del
Popolo (2009) in combination with observed data from the Romanowsky \& Fall
(2012) sample of elliptical and spiral galaxies, the Local Group sample
compiled by McConnachie (2012), and the simulation results by Cloet-Osselaer et
al. (2014). We find that the slope $\alpha$ flattens monotonically, from
$\alpha \simeq -1 $ at $V_{\rm rot} \simeq 250$ km/s, to $\alpha \simeq 0 $.
After $V_{\rm rot}\simeq 25$ km/s the slope starts to steepen. The steepening
happens in the mass range dominated by non-rotationally supported galaxies
(e.g., dSphs) and depends on the level of offset in the angular momentum of
rotationally and non-rotationally dominated galaxies. The steepening is a
consequence of the decrease in baryons content, and angular momentum in
spheroidal dwarf galaxies. We finally compare our result to the SPH simulations
of Di Cintio. Our result is in qualitatively agreement with their simulations,
with the main difference that the inner slope $\alpha$ at small stellar masses
($M_* \lesssim10^{8} M_{\odot}$) is flatter than that in their simulations. As
a result, the claim that finding a core in dwarf galaxies with masses slightly
smaller than $\simeq 10^6 M_{\odot}$, (as in the Di Cintio, or Governato,
supernovae feedback mechanism) would be a problem for the $\Lambda$CDM model
must be probably revised.

27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
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The categories of this paper are: patt-sol
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The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con