Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...228...95m&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 228, no. 1, Feb. 1990, p. 95-107.
Astronomy and Astrophysics
Astrophysics
160
Cosmic Dust, Emission Spectra, Molecular Clouds, Orion Nebula, Star Formation, Far Infrared Radiation, H Ii Regions, Millimeter Waves, Radiation Distribution
Scientific paper
The Orion molecular clouds (OMC) 1 and 2, which are a part of the much more extended and massive Orion-A cloud, are considered to be the prototype of star-forming cloud cores and have been mapped at lambda 1.3 mm by means of an infrared telescope facility located in Hawaii (angular resolution of 90 sec) and by means of a 30-m Millimeter Radio Telescope located in Spain (resolution of 11 sec). The total core hydrogen masses, the average column and volume densities, the dust temperatures (estimated to be about 20-25 K for the cores and 45 K for the thin surface layers of the clouds), and the luminosities for the various components have been derived. High-resolution observations have revealed the presence of condensations of stellar masses with enhanced densities and dust temperatures (40-200 K), most of which appear to be self-luminous.
Mezger Peter G.
Wink Jörn E.
Zylka Robert
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