Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Linear line spectropolarimetry as a new window to measure 2D and 3D wind
  geometries   Various theories have been proposed to predict how mass loss depends on the
stellar rotation rate, both in terms of its strength, as well as its
latitudinal dependence, crucial for our understanding of angular momentum
evolution. Here we discuss the tool of linear spectropolarimetry that can probe
the difference between mass loss from the pole versus the equator. Our results
involve several groups of O stars and Wolf-Rayet stars, involving Oe stars,
Of?p stars, Onfp stars, as well as the best candidate gamma-ray burst
progenitors identified to date.

8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics