Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Properties of Spiral Galaxies in Semi-Analytic Galaxy Formation
  Models   We examine the present-day galaxy disk colors and star formation rates (SFRs)
in the semi-analytic model of Cole et al. (2000). We find that the fiducial
model is a good match to Kennicutt's (1998) observed global star formation law,
the color-based metallicity-magnitude correlation and the colors of
low-luminosity galaxies. The main limitation of the model, from the point of
view of present-day spirals, is that the optical colors of the disks of very
luminous spiral galaxies are too blue, even after accounting for the effects of
dust.

5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ