Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21724506m&link_type=abstract
American Astronomical Society, AAS Meeting #217, #245.06; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
The conditions that lead to the development of starburst regions within galaxies are not well understood. By combining observations of formaldehyde (H2CO) and ammonia (NH3), we present a more complete picture of the physical conditions within several known starburst galaxies. Observations of the 110-111 and 211-212 K-doublet transitions of H2CO and the (1,1), (2,2), (4,4), and (2,1) transitions of NH3 were taken using the Green Bank 100-m telescope. The ratio of the integrated intensities of the observed metastable levels of NH3 was used to determine probable values of the kinetic temperatures in the starburst regions. Using these calculated kinetic temperature values to restrict Large Velocity Gradient modeling of the H2CO lines allowed us to determine the best fit spatial and molecular column densities for a sample of six starburst galaxies. The variations among starburst galaxies are discussed in the context of the physical parameters determined in this study and available from the literature. This project was supported by the NSF/REU grant AST-0223851 and the National Radio Astronomy Observatory.
MacGregor Meredith A.
Mangum Jeffrey G.
No associations
LandOfFree
Densitometry and Thermometry of Starburst Galaxies 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 Densitometry and Thermometry of Starburst Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Densitometry and Thermometry of Starburst Galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1398927