Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983aj.....88...88s&link_type=abstract
Astronomical Journal, vol. 88, Jan. 1983, p. 88-93. Research supported by the Koninklijke Nederlandse Akademie van Weteushappen,
Astronomy and Astrophysics
Astronomy
19
Astronomical Spectroscopy, Emission Spectra, Far Infrared Radiation, Infrared Spectra, Molecular Clouds, Carbon Isotopes, Cosmic Dust, Cosmic Gases, Gas Heating, Stellar Evolution, Stellar Luminosity, Stellar Mass, Stellar Temperature
Scientific paper
Four dark clouds, Rho Ophiuchi, Heiles 2, L1529, and L183, have been surveyed at 70 and 130 microns. A new source of far-infrared radiation, with total luminosity between 5 solar luminosities and 9 solar luminosities, compatible with the presence of a low-mass star, has been detected in Rho Oph. The emission extends over a very small region coincident with a (C-18)O column density peak. The temperature of the emitting dust is determined to be about 13 K, considerably lower than the gas excitation temperature. No far-infrared emission was detected from Heiles 2, L1529, or L183, indicating that these clouds can harbor only very low-mass objects, of luminosity at most about 2 solar luminosities.
Aalders W. G. J.
Beintema Douwe
Malcolm Fridlund C. V.
Nordh Lennart H.
Sargent Anneila I.
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