Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mean Angular Diameters and Angular Diameter Amplitudes of Bright
  Cepheids   We predict mean angular diameters and amplitudes of angular diameter
variations for all monoperiodic Pop.I Cepheids brighter than <V> = 8.0mag. The
catalog is intended to aid selecting most promising Cepheid targets for future
interferometric observations.

18
The categories of this paper are: econ
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat