Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...376l..17s&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 376, July 20, 1991, p. L17-L20.
Astronomy and Astrophysics
Astronomy
117
Infrared Sources (Astronomy), Interstellar Matter, Pre-Main Sequence Stars, Star Formation, Stellar Mass Accretion, Astronomical Photometry, Cosmic Dust, Infrared Astronomy Satellite, Stellar Luminosity, Submillimeter Waves
Scientific paper
IRAS 4 is a cold, low luminosity source in the active star formation region NGC 1333. The present sub-mm photometry and high spatial resolution 800- and 450-micron maps resolve this source into a binary system whose components are separated by about 31 arcsec and connected by a bridge of faint dust emission. The dust masses associated with the binary component are by far the largest seen toward any star of comparable luminosity, and are a factor of 10 higher than predicted by protostar models. It is suggested that these observations indicate a very young stellar system, possibly an actual protostar, in which most luminosity is generated by accretion.
Aspin Colin
Duncan William D.
Robson Ian E.
Russell Adrian P. G.
Sandell Göran
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