Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Probable nonradial g-mode pulsation in early A-type stars   A survey for line profile variability in early A-type stars has been
performed in order to detect nonradial pulsation signatures. The star HR 6139,
with spectral type A2V and estimated T_eff=8800 K, shows evident line profile
variations that can be explained by oscillations in prograde g-modes. This
feature and the known photometric variability are similar to those observed in
the Slowly Pulsating B-type stars. However HR 6139 is much cooler than the cool
border of the instability strip of such variables, and it is hotter than the
blue edge of the delta Scuti instability strip. There are indications of a tiny
variability also in other four objects, whose nature is not yet clear.

13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat