Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Morphological Characteristics of Compact High-Velocity Clouds Revealed
  by High-Resolution WSRT Imaging   A class of compact, isolated high-velocity clouds which plausibly represents
a homogeneous subsample of the HVC phenomenon in a single physical state was
objectively identified by Braun and Burton (1999). Six examples of the CHVCs,
unresolved in single-dish data, have been imaged with the Westerbork Synthesis
Radio Telescope. The high-resolution imaging reveals the morphology of these
objects, including a core/halo distribution of fluxes, signatures of rotation
indicating dark matter, and narrow linewidths constraining the kinetic
temperature of several opaque cores. In these regards, as well as in their
kinematic and spatial deployment on the sky, the CHVC objects are evidently a
dynamically cold ensemble of dark-matter-dominated HI clouds accreting onto the
Local Group in a continuing process of galactic evolution.

33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn