Biology
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21812911h&link_type=abstract
American Astronomical Society, AAS Meeting #218, #129.11; Bulletin of the American Astronomical Society, Vol. 43, 2011
Biology
Scientific paper
Chemical evolution of organic molecules essential to life begins in cold, pre-stellar molecular cloud cores. Given the relative lack of incident radiation, chemical reactions in these cores are dependent on interactions between their gas phase material and dust/ices. C18O and N2H+ in particular are two constituents in many pre-stellar cores that are detectable in their gas phase at radio wavelengths. Using data collected with the Swedish-ESO Submillimeter Telescope (SEST), we have observed the abundance and distribution of molecular gasses in a cold (10-13 K), starless core in the vicinity of Rossano cloud B (Corona Australis) which we have designated Object 42. We calculated and mapped C18O and N2H+ column densities and investigated the possibility of gas phase depletion in the core, which can occur as volatiles freeze out onto dust grains. This research is supported by Rensselaer Polytechnic Institute and the New York Center for Astrobiology which is a member of the NASA Astrobiology Institute.
Hardegree-Ullman Emily E.
Harju Jorma
Horne David
Mayeur P.
Spizuco J.
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