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| Paper: |
Molecular Cloud Structure from a CO Spectral Line: Interferometric Observations of MBM-12 |
| Volume: |
365, SINS — Small Ionized and Neutral Structures in the Diffuse Interstellar Medium |
| Page: |
201 |
| Authors: |
Ingalls, J.G.; Reach, W.T.; Bania, T.M.; Carpenter, J.M. |
| Abstract: |
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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