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Water Masers toward Low-Luminosity Young Stellar Objects

Published online by Cambridge University Press:  25 May 2016

Mark J Claussen ,
Kevin B. Marvel ,
H. Alwyn Wootten  and
Bruce A. Wilking
Mark J Claussen
Affiliation:
National Radio Astronomy Observatory, Socorro, NM, USA
Kevin B. Marvel
Affiliation:
Owens Valley Radio Observatory, Big Pine, CA, USA
H. Alwyn Wootten
Affiliation:
National Radio Astronomy Observatory Charlottesville, VA, USA
Bruce A. Wilking
Affiliation:
University of Missouri, St. Louis, MO, USA

Abstract

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A review of the importance of water maser observations toward young stellar objects (YSOs) is presented. Also, we present recent, differing types of observations of water masers near YSOs. Single antenna observations, taken regularly, characterize the variability of the masers and allow estimates of time and spatial scales. High resolution (∼ 1 mas) multi-epoch observations allow proper motions to be studied. Detailed analysis of such proper motions will allow the placement of the masers in the circumstellar (a disk) or near-stellar environment at the base of the outflow. Radio interferometric techniques are the best method of making estimates of the kinematics of the gas in these regions.

Type
V. Low- and High-Mass Protostars and Their Environment
Information
Symposium - International Astronomical Union , Volume 182: Herbig-Haro Flows and the Birth of Low Mass Stars , 1997 , pp. 515 - 524
Copyright
Copyright © Kluwer 1997 

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