High Resolution Infrared and Radio Imaging of the Most Powerful Water Maser Outflow in the Galaxy: Source G in W49A

Details High Resolution Infrared and Radio Imaging of the Most Powerful Water Maser Outflow in the Galaxy: Source G in W49A High Resolution Infrared and Radio Imaging of the Most Powerful Water Maser Outflow in the Galaxy: Source G in W49A

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21344002d&link_type=abstract

American Astronomical Society, AAS Meeting #213, #440.02; Bulletin of the American Astronomical Society, Vol. 41, p.317

Other

Scientific paper

We present high spatial resolution Gemini mid-infrared images of the ring of ultracompact (UC) HII regions in W49A, and use the images to identify the driving source of the powerful H$_2$O maser outflow. We locate the origin of the outflow at the position of the compact mid-IR peak to within 0$\farcs$07. This IR source is not coincident with any of the identified compact radio continuum G sources. The putative driving source G:IRS1 is spatially coincident with a hot molecular core seen in emission from methyl cyanide and other tracers at sub-arcsecond resolution. On larger scales, the IR and radio morphologies suggest that G:IRS1 is at the center of a large bipolar cavity and CO outflow with an east/west axis and an eastern lobe tilted toward us. The mid-IR morphology resembles that expected from the outer parts of a flared disk envelope. With a combined disk and bipolar outflow geometry, G:IRS1 in W49 provides circumstantial evidence for a massive flattened envelope around a massive protostar that is still accreting.

Affiliated with

Also associated with

No associations

Rating

High Resolution Infrared and Radio Imaging of the Most Powerful Water Maser Outflow in the Galaxy: Source G in W49A 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 High Resolution Infrared and Radio Imaging of the Most Powerful Water Maser Outflow in the Galaxy: Source G in W49A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High Resolution Infrared and Radio Imaging of the Most Powerful Water Maser Outflow in the Galaxy: Source G in W49A will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1703542