Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-04-23
Astronomy and Astrophysics
Astrophysics
17 pages, 7 figures, Submitted to ApJ
Scientific paper
10.1086/521589
We compare the CO 2-1 observations against previously taken CO 4-3 observations and analyze the spatial distribution of young stellar objects (YSO's) within the cloud using the Spitzer IRAC observations of the 30 Doradus complex. Both peaks of CO 2-1 and 4-3 emitting clouds coincide with the densest region of the filaments where multiple shells are colliding. We find that the YSO's are clustered in the southern ridge of the warm and dense molecular gas clouds traced by CO J=4-3, indicating a filamentary structure of star formation throughout the 30 Doradus. We also find that some of Class I YSO's candidates which are likely to be associated with a high-velocity component of CO 4-3 emitting clouds are present. This is a bona fide place where the triggered star formation had happened and newly formed stars may have produced such a high-velocity outflow interacting with the surrounding molecular cloud material.
Bak Jih-Yong
Brandl Berhard
Garcia Manuel
Kim H-S.
Kim Seongcheol
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