Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...282l..73k&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 282, July 15, 1984, p. L73-L75. Research supported
Astronomy and Astrophysics
Astronomy
38
Carbon Compounds, Carbon Monoxide, Infrared Astronomy, Interstellar Matter, Molecular Clouds, Sulfides, Angular Resolution, Gas Density, Gas Flow, Millimeter Waves, Stellar Evolution
Scientific paper
By using the 45 m millimeter-wave telescope, the CO bipolar flow source associated with an infrared source, GL 490, is observed in the J = 1-0 line of carbon monosulfide. The high angular resolution of the telescope, 30 arcsec, has allowed the discovery of a compact CS cloud about 0.3 pc x 0.13 pc in extent around GL 490, which is elongated orthogonally to the direction of the CO bipolar flow. Part of the cloud shows signs of expansion at velocities of less than about 4 km/s, although the total outgoing momentum of the CS cloud is smaller than that of the CO flow by an order of magnitude. This implies that the CS compact cloud has not been responsible for collimating the bipolar flow in this object.
Fujimoto Minoru
Fujimoto Yukihiro
Fukui Yasuo
Kawabe Ryo
Ogawa Hideo
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