Molecular cores of the high-latitude cloud MBM 40

Details Molecular cores of the high-latitude cloud MBM 40 Molecular cores of the high-latitude cloud MBM 40

Nov 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003newa....8..795c&link_type=abstract

New Astronomy, Volume 8, Issue 8, p. 795-803.

Astronomy and Astrophysics

Astronomy

3

Radio, Microwave

Scientific paper

Towards the high-latitude cloud MBM 40, we identify 3 dense molecular cores of M~0.2-0.5 Msolar, and sizes of ~0.2 pc in diameter embedded in the HI cloud of ~8 Msolar which is observed to be extended along the northeast-southwest direction. The molecular cloud is located almost perpendicularly to the HI emission. We confirm the previous result of Magnani et al. that MBM 40 is not a site for new star formations. We found a very poor correlation between the HI and the IRAS 100 μm emissions, but the CO (1-0) and 100 μm emissions show a better correlation of WCO/I100=1+/-0.2 K km s-1 (MJy sr-1)-1. This ratio is larger by a factor of >=5 than in dense dark clouds, which may indicate that the CO is less depleted in MBM 40 than in dense dark clouds.

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