Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003arep...47..797v&link_type=abstract
Astronomy Reports, vol. 47, Issue 10, p.797-808
Astronomy and Astrophysics
Astronomy
Scientific paper
Thirty four-frequency line profiles of Class II methanol masers have been analyzed to investigate carefully the coincidences of various spectral features. Data at 6.7, 12.2, 107, and 156.6 GHz have been analyzed. Two clusters of Class II methanol maser lines at 6.7 and 12.2 GHz are observed in the spectra of many sources. These maser-line clusters are located on either side of the thermal methanol lines at 107 and 156.6 GHz. To avoid the effect of amplification in these thermal methanol lines, a similar analysis was performed for 80 sources having both maser emission at 6.7 GHz and thermal CS emission. The relative distributions of the methanol maser lines and the thermal CS line confirm on the basis of richer statistics that the maser lines are located in two clusters on either side of the thermal feature. It is proposed that the two maser-line clusters correspond to two edges of a Keplerian disk. The thermal methanol and CS emission is formed in dense molecular cores, whose centers are coincident with the disk centers.
Lyubchenko Yu. S.
Val'tts Irina E.
No associations
LandOfFree
Methanol Emission in Distant Protoplanetary Disks 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 Methanol Emission in Distant Protoplanetary Disks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methanol Emission in Distant Protoplanetary Disks will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-914947