Submillimetre Maps Of Nearby Molecular Clouds

Details Submillimetre Maps Of Nearby Molecular Clouds Submillimetre Maps Of Nearby Molecular Clouds

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iauss...7e...7t&link_type=abstract

Astronomy in Antarctica, 26th meeting of the IAU, Special Session 7, 22-23 August, 2006 in Prague, Czech Republic, SPS7, #7

Astronomy and Astrophysics

Astronomy

Scientific paper

Large-scale homogeneous surveys of molecular clouds allow us to measure the physical conditions under which stars are formed. We have used AST/RO to survey the southern molecular clouds in the Spitzer `Cores to Disks' programme: Lupus, Chamaeleon, and a sample of small dense cores, all nearby (< 500 pc) regions of low-mass star formation. The AST/RO millimetre-wave maps (13CO 2-1) cover the same area as the Spitzer maps, while submillimetre (CO 4-3) maps cover areas with strong 13CO 2-1 emission. The CO 4-3 emission is subthermally excited and traces high-volume-density gas: In the large-scale maps, it shows a more clumpy structure than 13CO 2-1, highlighting the densest clumps of gas. By relating the physical conditions of the molecular gas to the census of young stars provided by Spitzer, we can track the process of star formation in dense molecular gas.

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