Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21941105s&link_type=abstract
American Astronomical Society, AAS Meeting #219, #411.05
Astronomy and Astrophysics
Astronomy
Scientific paper
We present the results of a multiwavelength study to take a complete census of cold dust, molecular gas, and neutral hydrogen in the nearby luminous and ultraluminous infrared galaxies ((U)LIRGs) from the Great Observatories All-sky LIRG Survey (GOALS) derived from the IRAS Revised Bright Galaxy Sample. The 182 LIRG and 20 ULIRG systems span a range of merger stages, spectral types, and, as an IR-selected sample, a range of extinction measures. For a significant subset ( 125 systems) we have obtained global 21-cm and new+archival CO measurements and find as L(IR) increases, the neutral gas fraction decreases more steeply than the total (neutral+molecular) gas fraction. The global measurements allow us to trace gas fractions and star formation efficiencies throughout the merging process.
Frayer David
Maddalena Ronald
Stierwalt Sabrina
Windemuth Diana
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