Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hot Gas and Physical Structure of 30 Dor   Recent ROSAT and ASCA X-ray observations as well as HST images have provided
new insights into the structure and evolution of the 30 Dor nebula. I review
hot gas properties of the nebula and discuss related physical processes. The
structure of the nebula can be understood as outflows of hot and HII gases from
the parent giant molecular cloud of R136. The dynamic mixing between the two
gas phases is likely a key mass loading process of the hot gas, providing a
natural explanation of both temperature and density structure of the nebula.

8
The categories of this paper are: hep-ex
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The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
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The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
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The categories of this paper are: quant-ph
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The categories of this paper are: q-fin
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The categories of this paper are: hep-lat
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The categories of this paper are: eess
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The categories of this paper are: bayes-an
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The categories of this paper are: q-bio
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The categories of this paper are: comp-gas
18
The categories of this paper are: econ