Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Simulating the circum-stellar environment of supernova and GRB
  progenitors by combining stellar evolution models and hydrodynamical code   The medium around massive stars is strongly shaped by the stellar winds.
Those winds depend on various stellar parameters (effective temperature,
luminosity, chemical composition, rotation, ...), which are varying as a
function of the time. Using the wind properties obtained by classical stellar
evolution code allows for the multi- D hydrodynamical simulation of the
circum-stellar medium accounting for the time variations of the wind. We
present here the preliminary results of the simulation of the medium around a
fast rotating star. Comparing the results of such simulations with the observed
properties of the circum-stellar medium will allow to better understand the
interactions of the stellar winds with the interstellar medium, and could give
hints on the past history of the mass loss around massive stars, providing
constraints for stellar models.

9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ