CH3OH and H2O maser associations at very high angular resolution
Date Issued
2005
Author(s)
Abstract
6.7 and 12.2 GHz CH_{3}OH (methanol) and 22.2 GHz H_{2}O masers are believed to be good tracers of the earliest phases of high-mass star formation. Interferometric and VLBI (Very Long Baseline Interferometry) observations have shown that water masers are predominantly associated with the innermost portions of the jets/outflows emerging from (proto-)stellar objects. On the other hand, the astrophysical environment traced by the 6.7 GHz (and the associated 12.2 GHz) CH_{3}OH masers is still to be more precisely determined. So far, most high-resolution studies have focused either on CH_{3}OH or on H_{2}O masers and little is known on their connection, wehereas it would be important to study both types of maser emission in the same object. The goal of our long-term project is to perform interferometric and VLBI observations of H_{2}O and CH_3OH masers towards a selected sample of high-mass YSOs where both maser types have been detected. This work presents preliminary results obtained for a few objects of our sample, and discusses possible implications.
Coverage
Massive Star Birth: A Crossroads of Astrophysics
All editors
Cesaroni, R.; Churchwell, E.B.; Felli, M.; Walmsley, C.M.
Volume
vol. 1, S227
Start page
190
Conferenece
Massive star birth: A crossroads of Astrophysics,
Conferenece place
Acireale, Italy
Conferenece date
16-20 May, 2005
Issn Identifier
1743-9213
Ads BibCode
2005IAUS..227..190M
Rights
open.access
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