Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...278l..45b&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 278, March 1, 1984, p. L45-L48.
Astronomy and Astrophysics
Astronomy
59
Infrared Astronomy, Nebulae, Spaceborne Astronomy, Stellar Evolution, Clouds, Gravitational Collapse, Infrared Astronomy Satellite, Stellar Envelopes
Scientific paper
Observations of the dark cloud Barnard 5 show two compact sources of radiation within the dense core. IRS 1 is associated with 30-800 K dust, has a total luminosity of about 10 solar luminosities, and is presumably a newly formed star of roughly solar mass. IRS 2 has a much cooler color temperature, approximately 25 K, and emits only 1.3 solar luminosities. Its status is unclear, but IRS 2 may be at a very early stage of gravitational collapse or a density enhancement within the cloud heated by the interstellar radiation field. Also within the confines of the cloud are two point sources, which, if associated with the cloud, each emit about 0.5 solar luminosities in the IRAS bands. These may be T Tauri stars, separated from the cloud but still enshrouded in dust shells.
Aumann Hartmut H.
Baud B.
Beichman Charles Arnold
Emerson James P.
Gautier Thomas N.
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