Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Dispersal of Young Stars and the Greater Sco-Cen Association   We review topics related to the dispersal of young stars from their
birth-sites, and focus in particular on the entourage of young stars related to
the ongoing star-formation event in the Sco-Cen OB association. We conduct a
follow-up kinematic study to that presented in Mamajek, Lawson, & Feigelson
(2000; ApJ 544, 356) amongst nearby, isolated, young stars. In addition to the
eta Cha and TW Hya groups, we find several more intriguing Sco-Cen outlier
candidates: most notably beta Pic, PZ Tel, HD 199143, and HD 100546. We discuss
the connection between Sco-Cen and the southern ``150 pc Conspiracy'' molecular
clouds, and in particular, Corona Australis. The kinematic evidence suggests
that many of the nearby, isolated ~10 Myr-old stars were born near Sco-Cen
during the UCL and LCC starbursts 10-15 Myr ago. We hypothesize that these
stars inherited 5-10 km/s velocities moving away from Sco-Cen, either through
molecular cloud turbulence, or through formation in molecular clouds associated
with the expanding Sco-Cen superbubbles (e.g. Loop I).

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The categories of this paper are: comp-gas
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The categories of this paper are: funct-an
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The categories of this paper are: hep-lat
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The categories of this paper are: adap-org
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The categories of this paper are: q-alg
1
The categories of this paper are: cs
2
The categories of this paper are: math
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The categories of this paper are: acc-phys
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The categories of this paper are: q-bio
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The categories of this paper are: q-fin
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The categories of this paper are: chao-dyn
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The categories of this paper are: plasm-ph
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The categories of this paper are: ao-sci
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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: mtrl-th