Detection of a series of methanol maser lines at 1.9 millimeter wavelength

Details Detection of a series of methanol maser lines at 1.9 millimeter wavelength Detection of a series of methanol maser lines at 1.9 millimeter wavelength

Apr 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...442..668s&link_type=abstract

Astrophysical Journal (ISSN 0004-637X), vol. 442, no. 2, Part 1, p. 668-673

Astronomy and Astrophysics

Astronomy

33

H Ii Regions, Interstellar Masers, Line Spectra, Methyl Alcohol, Millimeter Waves, Molecular Clouds, Radio Astronomy, Velocity Distribution, Astronomical Spectroscopy, Molecular Flow, Molecular Rotation, Shock Waves, Spectrum Analysis, Thermal Emission

Scientific paper

The series of methanol J0-J-1 E lines at 157 GHz has been detected in known methanol line sources together with the 21-30 A+ line of A-type methanol. In W3(OH), 345.01+1.79, W48, and Cep A the Jo-J-1 lines are intense and narrow and are believed to be maser lines. The radial velocities and profiles are similar to those of other class II methanol lines in these sources. The intensity of the lines increases with rotational number J, in contrast to thermal methanol features which were detected in the same sources at slightly different radial velocities. It is suggested that the new maser line sources are the class II methanol masers but are excited with higher radiation temperature than the lower frequency class II masers at 6.7 and 12.2 GHz. The masers may be related to molecular outflows or cometary bow shocks of ultracompact H II regions as is evidenced by their velocity shift relative to the parent molecular clouds.

Affiliated with

Also associated with

No associations

Rating

Detection of a series of methanol maser lines at 1.9 millimeter wavelength 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 a series of methanol maser lines at 1.9 millimeter wavelength, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of a series of methanol maser lines at 1.9 millimeter wavelength will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1828325