Small rotating clouds of stellar mass in Orion molecular cloud 1

Details Small rotating clouds of stellar mass in Orion molecular cloud 1 Small rotating clouds of stellar mass in Orion molecular cloud 1

Feb 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...265l..63h&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 265, Feb. 15, 1983, p. L63-L66.

Astronomy and Astrophysics

Astrophysics

46

Ammonia, Molecular Clouds, Orion Nebula, Protostars, Rotating Matter, Astronomical Maps, Interferometry, Optical Thickness

Scientific paper

A region in the Orion molecular cloud containing NH3 and 3.5 arcmin north of BN/KL has been examined with the high angular and spectral resolution of the VLA. Observations of the NH3(1,1) and (2,2) inversion transitions reveal at least two small cloud fragments about 0.05 pc across that rotate rather rapidly and have masses approximating that of normal stars. Optical depth of the (1,1) transition is tau approximately 7 and the temperature is about 20 K. These clumps are likely candidates for a stage of cloud development shortly before the formation of low-mass protostars.

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