Evolution of the Structure of the H_2O Supermaser Outburst Region in Orion KL

Astronomy and Astrophysics – Astronomy

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

9

Scientific paper

During the period 1979-1999, we investigated the hyperfine structure of the H_2O supermaser region located in the core of the molecular cloud OMC-1 in Orion KL. The angular resolution is 0.1 mas, which corresponds to 0.045 AU. The detected structure, which consists of a central object, an accretion disk, a bipolar outflow, and an envelope, corresponds to the initial formation stage of a low-mass star. The accretion disk is at the stage of separation into groups of concentric rings. The bipolar outflow is a neutral, highly collimated jet of accreted material that includes H_2O molecules and dust grains in the icy envelope. The injector is a bright compact source with a size < 0.05 AU and a brightness temperature T_b 10^{17} K. The velocity of the bipolar outflow is v 10 km/s. The rotation velocity of the jet is v_rot 1.5 km/s. The jet has the shape of a conical helix due to the precession of the rotation axis. Occasionally, dense blobs (comet-shaped bullets) are ejected. The envelope amplifies the radio emission from the structures in a 0.5 km/s maser window band with velocities v 7.65 km/s by more than two orders of magnitude.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Evolution of the Structure of the H_2O Supermaser Outburst Region in Orion KL 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 Evolution of the Structure of the H_2O Supermaser Outburst Region in Orion KL, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evolution of the Structure of the H_2O Supermaser Outburst Region in Orion KL will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1602506

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.