SiO Maser Observations toward Orion-KL with VERA

Details SiO Maser Observations toward Orion-KL with VERA SiO Maser Observations toward Orion-KL with VERA

Aug 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..402..469k&link_type=abstract

Approaching Micro-Arcsecond Resolution with VSOP-2: Astrophysics and Technologies ASP Conference Series, Vol. 402, proceedings o

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present results of phase-referencing VLBI observations of SiO masers in the Orion KL region made with VERA. The goal of our study is to investigate the dynamics of the gas surrounding Source I, as well as to determine the distance to Orion-KL. We imaged SiO v=1, J=1-0 and v=2, J=1-0 maser emission in Orion-KL and compared the absolute positions of the maser spots with that of Source I. The maser emission shows an X-shaped distribution centered at Source I, and the SiO v=2 emission lies closer to Source I than the SiO v=1 emission. The radial velocities and proper motions of the maser spots indicate that the gas around Source I is rotating and expanding. In addition, we present the preliminary result of the measurement of the annual parallax using the SiO v=2 emission. The parallax of Orion-KL is 2.39±0.03 mas, corresponding to the distance of 418±6 pc.

Affiliated with

Also associated with

No associations

Rating

SiO Maser Observations toward Orion-KL with VERA 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 SiO Maser Observations toward Orion-KL with VERA, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and SiO Maser Observations toward Orion-KL with VERA will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-818429