Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...201l..16m&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 201, no. 1, July 1988, p. L16-L18. NSERC-supported research.
Astronomy and Astrophysics
Astrophysics
7
Interstellar Gas, Molecular Clouds, Pre-Main Sequence Stars, Stellar Spectra, Absorption Spectra, Carbon Monoxide, Emission Spectra, Stellar Mass Ejection
Scientific paper
A high-resolution (0.059/cm) M-band spectrum has been obtained of the embedded young stellar object GL490. The spectrum shows interstellar absorption in the fundamental vibrational band, v = 1-0, of (C-12)O. Two strong and narrow (10 km/s) velocity components are present. One, at the velocity of GL490 (vLSR = -16 km/s), is likely gas in the molecular cloud within which GL490 is embedded. The other component is blueshifted by 13 km/s relative to GL490. An observation of emission from the J = 3-2 transition of HCO(+) using a 20-arcsec beam supports the view that the blueshifted gas is near the central object. The -29-km/s feature is interpreted as a recently ejected shell. It is conjectured that the extended outflows of cold molecular gas seen by millimeter CO emission observations are driven by sporadic outbursts rather than by continuous flows from the central object.
Allen Marsha M.
Beer Reinhard
Dekany Richard
Huntress Wesley
Maillard Jean Pierre
No associations
LandOfFree
The detection of a discrete outflow from the young stellar object GL 490 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 The detection of a discrete outflow from the young stellar object GL 490, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The detection of a discrete outflow from the young stellar object GL 490 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1421955