SMA imaging of the masers in MWC349A

Details SMA imaging of the masers in MWC349A SMA imaging of the masers in MWC349A

Mar 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007iaus..242..494w&link_type=abstract

Astrophysical Masers and their Environments, Proceedings of the International Astronomical Union, IAU Symposium, Volume 242, p.

Astronomy and Astrophysics

Astrophysics

Masers, Instrumentation: High Angular Resolution, Submillimeter, Radio Lines: Stars

Scientific paper

In September 2004 and September 2005 we used the Submillimeter Array (SMA) to map the distribution of hydrogen recombination line (HRL) maser spots that originate in the envelope of the peculiar star MWC349A. We measured positions in the line over a 100 km/s velocity range with 1 km/s spectral resolution. Relative angular position was estimated to an accuracy of about 0.01 arcseconds. The H30α maser components can be tracked continuously in frequency between the red- and blue-shifted peaks of the spectrum. The masers appear to trace a nearly edge-on disk-like structure. The position-velocity relationship is quite remarkable, and reminiscent of that of NCG4258. However, the “wings” in the PV relation are too steep for a simple Keplerian prescription to be correct. We present our data, and suggest a simple model to account for the steep wings.

Affiliated with

Also associated with

No associations

Rating

SMA imaging of the masers in MWC349A 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 SMA imaging of the masers in MWC349A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and SMA imaging of the masers in MWC349A will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-922753