Mathematics – Logic
Scientific paper
Apr 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008atnf.prop.1363t&link_type=abstract
ATNF proposal M295, Semester: April, 2008
Mathematics
Logic
Galactic, Mopra
Scientific paper
We propose to search for dense (n(H_2) 10^5 cm^{-3}) and compact cores embedded in C^{18}O cores that we identified in the last season. In this remarkably filamentary cloud, we will investigate the star-formation activities under the influence of magnetic field and turbulence through physical properties of the dense cores. In our previous statistical studies, cloud cores with smaller linewidth tend to be gravitationally bound and more evolved. The C^{18}O result shows it the Musca cloud has typically small linewidth, namely little turbulence, while star formation is not as active as for the Taurus and Chamaeleon I clouds. The complex velocity and morphological structures indicate that the cloud has been gravitationally fragmented into even denser cores. Optically thin high density tracers of H^{13}CO^{+} and N_{2}H^{+} lines will be used for the dense core census and their linewwidth estimation, while optically thick HCO^{+} line will reveal indications of gravitational collapse, if exist.
Itoh Yoichi
Miyamoto Izumi
Niwa Takahiro
Oasa Yumiko
Tachihara Kengo
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