Origin of Warm High-Velocity Dense Gas in ULIRGs

Details Origin of Warm High-Velocity Dense Gas in ULIRGs Origin of Warm High-Velocity Dense Gas in ULIRGs

2007-06-19

arxiv.org/abs/0706.2890v1

Astronomy and Astrophysics

Astrophysics

14 pages, 6 figures. Publications of Astronomical Society of Japan in press

Scientific paper

Possible origins of the molecular absorption discovered in some ULIRGs are investigated, based on a 3-D hydrodynamic model of star-forming interstellar gas in a galactic central region. The blue-shifted, warm ($\sim 200-300$ K), dense ($>10^6$ cm$^{-3}$) molecular gas suggested by CO absorption in IRAS 08752+3915 could be caused by the innermost region of the inhomogeneous inter-stellar medium (ISM) around a supermassive black hole. The infrequent observations of the dense gas with absorption in ULIRGs and Seyfert 2 galaxies could simply suggest that the high-density regions occupy only a very small volume fraction of the obscuring material. This is naturally expected if the inhomogeneous structure of the ISM is caused by non-linear development of instabilities. The model predicts a turbulent velocity field in the obscuring material, therefore blue- and red-shifted gases should be observable with nearly the same probability for the large enough statistical samples.

Affiliated with

Also associated with

No associations

Rating

Origin of Warm High-Velocity Dense Gas in ULIRGs 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 Origin of Warm High-Velocity Dense Gas in ULIRGs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Origin of Warm High-Velocity Dense Gas in ULIRGs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-33937