Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...383l..81n&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 383, Dec. 20, 1991, p. L81-L84.
Astronomy and Astrophysics
Astronomy
13
Accretion Disks, Infrared Sources (Astronomy), Interstellar Gas, Molecular Gases, Star Formation, Infrared Astronomy, Millimeter Waves, Radio Astronomy, Stellar Mass Accretion, Synthetic Apertures
Scientific paper
Aperture synthesis CS(J = 2-1) observations of the disk structure of the dense molecular gas around the young stellar object GL 490 are performed with 4-arcsec resolution using the Nobeyama Millimeter Array. The gas is found to have a noncircular velocity of about (1-1.5) km/s/sin i (i = inclination angle of the disk) and a mass of about 10 solar masses inside an 8500 AU region of the disk. According to the disk orientation indicated from one-sided cone-shaped optical and IR nebulocities, and the bipolar CO outflow, the noncircular motion is interpreted as inflow. The accretion time scale of the gas is estimated to be about 30,000 yr and the mass accretion rate to be 0.0003 solar mass/yr.
Ishiguro Masato
Kawabe Ryohei
Kitamura Yoshimi
Murata Yasuhiro
Nakamura Akiko
No associations
LandOfFree
Aperture synthesis CS(2-1) observations of a young stellar object GL 490 - Accretion flow in gas disk does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Aperture synthesis CS(2-1) observations of a young stellar object GL 490 - Accretion flow in gas disk, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aperture synthesis CS(2-1) observations of a young stellar object GL 490 - Accretion flow in gas disk will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1536943