Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A simple model for the clustering of subhalos as a function of mass   Astrophysicists do not associate galaxies with the massive dark matter halos
so easily detected in particle simulations and whose mass function can be
predicted by the Press-Schechter formalism and its variants. Instead, they
associate galaxies with smaller surviving subhalos whose contents do not fully
mix into the larger dark matter halos they exist in. However, these subhalos
are as of now difficult to find in simulations. I present a simple description
of what the Press-Schechter formalism can say about the clustering of these
subhalos, under the restrictive assumption that at fixed subhalo mass, the
chance of survival of the subhalo is independent of its larger scale
environment. This model predicts a weak dependence of clustering on mass below
masses of about 10^12 solar masses, in agreement with observations of a weak
dependence of clustering on luminosity at luminosities less than L*. The model
is in qualitative agreement with observations that at low luminosities galaxy
clustering is a strong function of color while at high luminosities galaxy
clustering is a strong function of luminosity.

26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math