Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dwarf Spheroidal Satellite Galaxies and the Galactic Tidal Field   The Milky Way is surrounded by nine or more dwarf-spheroidal (dSph) satellite
galaxies that appear to consist primarily of dark matter. Here I summarise
research that shows that initially spherical bound low-mass satellites without
dark matter, that are on orbits within a massive Galactic dark corona, can
evolve into remnants that are non-spherical, have a non-isotropic velocity
dispersion tensor and are not in virial equilibrium, but are bright enough for
sufficiently long times to be mistaken for dark-matter dominated dSph galaxies.

24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio