Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-03-21
Astronomy and Astrophysics
Astrophysics
5 pages including (questions/answers) discussion. Talk contribution at IAU Symp. 237, B.G. Elmegreen & J. Palous, eds
Scientific paper
10.1017/S1743921307001688
Active star formation (SF) is tightly related to the dense molecular gas in the giant molecular clouds' dense cores. Our HCN (measure of the dense molecular gas) survey in 65 galaxies (including 10 ultraluminous galaxies) reveals a tight linear correlation between HCN and IR (SF rate) luminosities, whereas the correlation between IR and CO (measure of the total molecular gas) luminosities is nonlinear. This suggests that the global SF rate depends more intimately upon the amount of dense molecular gas than the total molecular gas content. This linear relationship extends to both the dense cores in the Galaxy and the hyperluminous extreme starbursts at high-redshift. Therefore, the global SF law in dense gas appears to be linear all the way from dense cores to extreme starbursts, spanning over nine orders of magnitude in IR luminosity.
No associations
LandOfFree
The Global Star Formation Law: from Dense Cores to Extreme Starbursts 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 The Global Star Formation Law: from Dense Cores to Extreme Starbursts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Global Star Formation Law: from Dense Cores to Extreme Starbursts will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-381912