A Survey for Infall Motions toward Starless Cores. I. CS (2-1) and N$_2$H$^+$ (1-0) Observations

Details A Survey for Infall Motions toward Starless Cores. I. CS (2-1) and N$_2$H$^+$ (1-0) Observations A Survey for Infall Motions toward Starless Cores. I. CS (2-1) and N$_2$H$^+$ (1-0) Observations

1999-06-29

arxiv.org/abs/astro-ph/9906468v1

Astronomy and Astrophysics

Astrophysics

26 pages, 9 figures (13 PS files), accepted for publication to ApJ

Scientific paper

10.1086/308027

In this paper, we present the first results of a survey of 220 starless cores
selected primarily by their optical obscuration (Lee & Myers 1999) and observed
in CS (2-1), N$_2$H$^+$ (1-0), and C$^{18}$O (1-0) using the NEROC Haystack
37-m telescope, to quantify the incidence of infall motions toward starless
cores and find infall candidates for further study in the future.

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