Computer Science
Scientific paper
Apr 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atnf.prop.2175k&link_type=abstract
ATNF proposal M409, Semester: April, 2009
Computer Science
Extragalactic, Mopra
Scientific paper
Hickson Compact Groups, whose evolution is dominated by galaxy interactions, are important probe of conditions in the early universe. Recent results from Johnson et al. (2007) have found that HI-rich groups have the most recent star formation activity while HI-poor groups have the least recent star formation activity. However, molecular hydrogen (as traced by CO emission) has been recently shown to be a much better tracer of star formation than neutral hydrogen. To more accurately determine the star formation properties of HCGs, we propose to use Mopra to measure the molecular content of the galaxies in five HCGs to trace the gas directly responsible for the star formation in these groups. These observations, when combined with CO observations from the literature and the sensitive infrared data of Johnson et al. (2007) will allow us to determine a) is molecular hydrogen deficient in HCGs in our sample, b) does the molecular hydrogen deficiency correlate with a neutral hydrogen deficiency, and c) how are the star formation properties of galaxies in HCGSs related to their CO content.
Johnson Kelsey
Kepley Amanda
Walker Lisa May
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