The nearby 2-solar mass BOK globule LBN 11 - Sub-sonic molecular clumps in a magnetic environment

Details The nearby 2-solar mass BOK globule LBN 11 - Sub-sonic molecular clumps in a magnetic environment The nearby 2-solar mass BOK globule LBN 11 - Sub-sonic molecular clumps in a magnetic environment

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aj....104.2165c&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 104, no. 6, p. 2165-2188.

Astronomy and Astrophysics

Astronomy

10

Interstellar Magnetic Fields, Interstellar Matter, Molecular Clouds, Stellar Mass, Astronomical Polarimetry, Carbon Monoxide, Density Distribution, Emission Spectra, Interstellar Gas, Star Formation

Scientific paper

A multiwavelength study of the nearby small Bok globule LBN 11 is performed in order to investigate the relationship between embedded magnetic fields, cloud structure, and star formation. Optical polarimetry of background stars is used to characterize and trace the embedded magnetic field direction. High-dispersion CO isotopic mapping is employed to determine the radial density distribution of the gas, measure cloud rotation, and identify individual gas clumps. CS and SO mapping revealed dense cores within the (C-13)O clumps. Analysis of coadded IRAS images reveal the cloud to be free of current or recent star formation: there are no IR point sources of sufficient flux or proper colors to signify young stars associated with the cloud. The molecular line maps show the cloud to be extremely clumpy. Clumps are found to range in size from 0.2 pc for the largest CO clump to about 0.04 pc for the smallest CS feature. It is concluded that, at least in the envelope of the cloud, the magnetic field and the CO clumps are coupled.

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