Astronomy and Astrophysics – Astrophysics – Galaxy Astrophysics
Scientific paper
2010-07-29
Astronomy and Astrophysics
Astrophysics
Galaxy Astrophysics
18 pages, 29 figures; accepted for publication in ApJS
Scientific paper
We present the results of an extensive observational study of the active star-forming complex W51 that was observed in the J=2-1 transition of the 12CO and 13CO molecules over a 1.25 deg x 1.00 deg region with the University of Arizona Heinrich Hertz Submillimeter Telescope. We use a statistical equilibrium code to estimate physical properties of the molecular gas. We compare the molecular cloud morphology with the distribution of infrared (IR) and radio continuum sources, and find associations between molecular clouds and young stellar objects (YSOs) listed in Spitzer IR catalogs. The ratios of CO lines associated with HII regions are different from the ratios outside the active star-forming regions. We present evidence of star formation triggered by the expansion of the HII regions and by cloud-cloud collisions. We estimate that about 1% of the cloud mass is currently in YSOs.
Bieging John H.
Choi Minho
Kang Miju
Kulesa Craig A.
Lee Youngung
No associations
LandOfFree
A CO Line and Infrared Continuum Study of the Active Star-Forming Complex W51 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A CO Line and Infrared Continuum Study of the Active Star-Forming Complex W51, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A CO Line and Infrared Continuum Study of the Active Star-Forming Complex W51 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-450568