VLBI maser kinematics in high-mass SFRs: G23.01-0.41
Date Issued
2012
Author(s)
Abstract
Very Long Baseline Interferometry studies of different maser species observed at multiple epochs allow complementary measurements of the 3-dimensional velocity field of gas close (<~ 103 AU) to massive young stellar objects. Here, we review our recent results toward the high-mass star-forming region G23.01-0.41, where all the strongest molecular maser transitions known to date cluster within 2000 AU from the center of an hot molecular core and are associated with a so called extended green object. The overall maser kinematics reveals a common outflowing motion from a central object; the details of the spatial distribution and velocity field of each maser species hint at the presence of different dynamical structures: a collimated jet, a wide-angle wind, and a flattened rotating core. We further compare the simultaneous presence of maser emission from different molecular species with a recent evolutionary sequence for masers associated with massive young stellar objects.
Coverage
Cosmic Masers - from OH to H0
All editors
Booth, R.S.; Humphreys, E.M.L.; Vilemmings, W.H.T.
Volume
vol. 8, S287
Start page
396
Conferenece
Cosmic Masers - from OH to H0
Conferenece place
Stellenbosch, South Africa
Conferenece date
29 January- 3 February, 2012
Issn Identifier
1743-9213
Ads BibCode
2012IAUS..287..396S
Rights
open.access
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