The Star formation rate and dense molecular gas in galaxies

Oct, 2003
20 pages
Published in:
  • Astrophys.J. 606 (2004) 271-290
e-Print:

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Abstract: (arXiv)
(abridged) HCN luminosity Lhcn is a tracer of DENSE molecular gas, n(H_2) >~ 3x10^4 cm^{-3}, associated with star-forming giant molecular cloud (GMC) cores. We present the results and analysis of our survey of HCN emission from 65 infrared galaxies including 9 ultraluminous infrared galaxies (ULIGs, Lir>10^{12}Lsun), 22 luminous infrared galaxies (LIGs, 10^{11}