Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Star Formation: Lessons from Taurus   The Taurus molecular cloud complex is the paradigm for quiescent,
low-density, isolated star formation. Yet the age distribution of its stellar
population indicates that star formation is a rapid and dynamic process,
inconsistent with the old picture of magnetically-controlled protostellar cloud
collapse. Instead, Taurus seems to have formed stars in a manner qualitatively
consistent with the rapid cloud formation and dispersal inferred for other,
higher-density star-forming regions. I suggest that the Taurus clouds were
formed rapidly by the collision of atomic gas streams in the interstellar
medium, and that star formation ensued immediately afterward.

33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
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The categories of this paper are: bayes-an
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The categories of this paper are: chem-ph
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The categories of this paper are: adap-org
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int