Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apl....17..105h&link_type=abstract
Astrophysical Letters, vol. 17, no. 3, 1976, p. 105-112.
Astronomy and Astrophysics
Astronomy
19
Astronomical Models, Microwave Emission, Radial Velocity, Radio Sources (Astronomy), Water Vapor, Brillouin Effect, Electromagnetic Scattering, H Ii Regions, H Lines, High Speed, Infrared Radiation, Interstellar Masers, Low Speed, Molecular Excitation, Raman Spectra
Scientific paper
The primary observational constraints on any acceptable model for the 1.35 cm high velocity water vapor features in W49 are detailed. Several possibilities for models, satisfying various of these constraints, are suggested and analyzed. The most likely interpretation of the low velocity features is that they are associated with a dust shell surrounding a compact H II region. We suggest that the high velocity features are accelerated outwards by the same massive star which powers the H II region. Several kinematic models are considered, the most likely being that the lack of positive velocity features is caused by a lack of masing material on the far side of the central star. Models in which the high 'velocities' are considered to be non-Doppler in origin, such as Brillouin or Raman scattering, are briefly considered and concluded to be highly unlikely.
Heckman Timothy M.
Sullivan Woodruff T. III
No associations
LandOfFree
The puzzle of the high velocity water vapor features in W49 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 The puzzle of the high velocity water vapor features in W49, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The puzzle of the high velocity water vapor features in W49 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1297648