COLLAPSE CANDIDATES AMONG THE BOK GLOBULES

Citation
Ys. Wang et al., COLLAPSE CANDIDATES AMONG THE BOK GLOBULES, The Astrophysical journal, 454(1), 1995, pp. 217-232
Citations number
58
Categorie Soggetti
Astronomy & Astrophysics
Journal title
ISSN journal
0004637X
Volume
454
Issue
1
Year of publication
1995
Part
1
Pages
217 - 232
Database
ISI
SICI code
0004-637X(1995)454:1<217:CCATBG>2.0.ZU;2-S
Abstract
A survey in the (CO)-O-18 J = 2-->1 line toward Bok globules detected emission in 27 of them. Maps of the (CO)-O-18 line located maxima of c olumn density within 34'' of IRAS sources in 12 globules. Emission in the H2CO J(k-1k1) = 3(12) --> 2(11) line was detected toward nine of t hese 12 globules, indicating high volume density. Three of these sourc es have kinematic signatures consistent with collapse, as confirmed by detailed source modeling. Uncertainties in the distances make a defin itive judgment about collapse difficult at this time, but we consider CB 244, CB 54, and CB 3 to be candidates for collapse. Among the three , CB 244 is the best example of low-mass star formation; CB 54 has the least convincing evidence for collapse but is worthy of further inves tigation; and CB 3 most likely represents intermediate-mass star forma tion.