Collapse Candidates among the BOK Globules

Details Collapse Candidates among the BOK Globules Collapse Candidates among the BOK Globules

Nov 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...454..217w&link_type=abstract

Astrophysical Journal v.454, p.217

Astronomy and Astrophysics

Astronomy

52

Ism: Globules, Ism: Kinematics And Dynamics, Ism: Molecules

Scientific paper

A survey in the C18O J = 2 → 1 line toward Bok globules detected emission in 27 of them. Maps of the C18O line located maxima of column density within 34" of IRAS sources in 12 globules. Emission in the H2CO JK-1-K1 = 312 → 211 line was detected toward nine of these 12 globules indicating high volume density. Three of these sources have kinematic signatures consistent with collapse, as confirmed by detailed source modeling. Uncertainties in the distances make a definitive 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 investigation; and CB 3 most likely represents intermediate-mass star formation.

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