Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aj....117.1485c&link_type=abstract
The Astronomical Journal, Volume 117, Issue 3, pp. 1485-1489.
Astronomy and Astrophysics
Astronomy
3
Stars: Circumstellar Matter, Ism: Evolution, Ism: Individual: Name: Orion Irc2, Ism: Masers, Stars: Formation
Scientific paper
Time monitoring observations of the ^28SiO v=0-2, J=3-2 transitions were performed on an annual basis from 1995 to 1998 with the 14 m radio telescope at Taeduk Radio Astronomy Observatory toward Orion KL IRc2 containing the ^28SiO v=1, J=2-1 maser emission. On 1996 March 1, a violent line profile variation with three spikes was detected in the high-velocity component of the SiO v=2, J=3-2 maser. The strongest spike, with V_LSR=20.5 km s^-1, constituted a new appearance. We suggest that the line profile variation of the SiO v=2, J=3-2 maser is probably the result of time variations in bipolar outflows from a young stellar object in the Orion KL IRc2 region. In addition, our observational results show that the high-velocity component of the SiO v=2, J=3-2 maser is the most active.
Cho Se-Hyung
Chung Hyun-Soo
Kim Hyo-Ryoung
Kim Hyun-Goo
Roh Duk-Gyoo
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