Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Wind emission of OB supergiants and the influence of clumping   The influence of the wind to the total continuum of OB supergiants is
discussed. For wind velocity distributions with \beta > 1.0, the wind can have
strong influence to the total continuum emission, even at optical wavelengths.
Comparing the continuum emission of clumped and unclumped winds, especially for
stars with high \beta values, delivers flux differences of up to 30% with
maximum in the near-IR. Continuum observations at these wavelengths are
therefore an ideal tool to discriminate between clumped and unclumped winds of
OB supergiants.

23
The categories of this paper are: solv-int
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con