Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Survey for a Coeval, Comoving Group Associated with HD 141569   We present results of a search for a young stellar moving group associated
with the star HD 141569, a nearby, isolated Herbig AeBe primary member of a
5+/-3 Myr-old triple star system on the outskirts of the Sco-Cen complex. Our
spectroscopic survey identified a population of 21 Li-rich, <30 Myr-old stars
within 30 degrees of HD 141569 which possess similar proper motions with the
star. The spatial distribution of these Li-rich stars, however, is not
suggestive of a moving group associated with the HD 141569 triplet, but rather
this sample appears cospatial with Upper Scorpius and Upper Centaurus Lupus. We
apply a modified moving cluster parallax method to compare the kinematics of
these youthful stars with Upper Scorpius and Upper Centaurus Lupus. Eight new
potential members of Upper Scorpius and five new potential members of Upper
Centaurus Lupus are identified. A substantial moving group with an identifiable
nucleus within 15 degrees (~30 pc) of HD 141569 is not found in this sample.
Evidently, the HD 141569 system formed ~5 Myr ago in relative isolation, tens
of parsecs away from the recent sites of star formation in the
Ophiucus-Scorpius-Centaurus region.

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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: cmp-lg
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The categories of this paper are: alg-geom
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The categories of this paper are: quant-ph
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The categories of this paper are: eess
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The categories of this paper are: supr-con
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The categories of this paper are: patt-sol
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-ex
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The categories of this paper are: cond-mat
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The categories of this paper are: q-fin
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The categories of this paper are: math
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-th