A Survey for Infall Motions toward Starless Cores. I. CS (2-1) and N2H+ (1-0) Observations
Chang Won Lee, Philip C. Myers, Mario Tafalla
Abstract
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), N2H+ (1-0), and C18O (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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