Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: v_\perp CMD   I present an Hipparcos color-magnitude diagram (CMD) that is color-coded by
transverse velocity v_\perp. This illustrates the connection between the
photometric and kinematic properties of various stellar populations in a manner
that is particularly suitable to introductory astronomy courses.

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The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
16
The categories of this paper are: stat
3
The categories of this paper are: physics
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph