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2004MNRAS.354..401E - Mon. Not. R. Astron. Soc., 354, 401-413 (2004/October-3)
Discovery of new 19.9-GHz methanol masers in star-forming regions.
ELLINGSEN S.P., CRAGG D.M., LOVELL J.E.J., SOBOLEV A.M., RAMSDALE P.D. and GODFREY P.D.
Abstract (from CDS):
We find a strong correlation between sources that exhibit 19.9-GHz methanol masers and those that both have the class II methanol masers projected against radio continuum emission and have associated 6035-MHz OH masers. This suggests that the 19.9-GHz methanol masers arise in very specific physical conditions, probably associated with a particular evolutionary phase. In the model of Cragg, Sobolev & Godfrey these observations are consistent with gas temperatures of 50 K, dust temperatures of 150-200 K and gas densities of 106.5-107.5/cm3.
Abstract Copyright: 2004 RAS
Journal keyword(s): masers - stars: formation - ISM: molecules - radio lines: ISM
Simbad objects: 26
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