Molecular Cloud Structure from a CO Spectral Line: Interferometric Observations of MBM-12

Details Molecular Cloud Structure from a CO Spectral Line: Interferometric Observations of MBM-12 Molecular Cloud Structure from a CO Spectral Line: Interferometric Observations of MBM-12

Jul 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..365..201i&link_type=abstract

SINS - Small Ionized and Neutral Structures in the Diffuse Interstellar Medium ASP Conference Series, Vol. 365, Proceedings of t

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We used the OVRO millimeter interferometer to measure the CO (1-0) surface brightness fluctuations as a function of velocity towards molecular cloud MBM-12. We detect no interferometer visibility at the velocity of the single-dish line core, suggesting a unity surface filling factor of emitting gas. According to our model, the line wing emission is produced by tiny (1-5 milliparsec), dilute clumps, whereas the line core emission comes from large (0.01 pc) surface-filling clumps (the beamsize is about 0.03 pc). If the model is correct, the cloud is made up of mostly transient structures.

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