Detection of OH Towards the Extreme Carbon Star IRC+10216

Details Detection of OH Towards the Extreme Carbon Star IRC+10216 Detection of OH Towards the Extreme Carbon Star IRC+10216

2003-02-05

arxiv.org/abs/astro-ph/0302103v1

Astrophys.J. 589 (2003) 430-438

Astronomy and Astrophysics

Astrophysics

accepted by ApJ

Scientific paper

10.1086/374552

We report the detection of the 1665 and 1667 MHz main lines of OH (hydroxyl) and upper limits on the 1612 MHz satellite line of OH towards the carbon-rich AGB star, IRC+10216. We find a beam averaged fractional abundance x(OH)~4x10^{-8}. This detection supports the identification by Melnick et al. (2001) of the 1_10-1_01 transition of water vapor with a 556.936 GHz emission feature detected towards IRC+10216, since OH is the expected photodissociation product of water vapor. The shape of the OH lines, however, differs significantly from the shape expected based on the observations of Melnick et al. (2001). Possible explanations for the anomalous shapes of the 1665 and 1667 MHz lines are discussed. The most likely explanations for the unexpected OH line shapes are either masing or an asymmetric distribution of OH molecules around IRC+10216.

Affiliated with

Also associated with

No associations

Rating

Detection of OH Towards the Extreme Carbon Star IRC+10216 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 Detection of OH Towards the Extreme Carbon Star IRC+10216, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of OH Towards the Extreme Carbon Star IRC+10216 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-99124