GBT02A-063

Water Maser Monitoring of Low and Intermediate Mass Young Stellar Objects

Abstract

We propose a water maser monitoring project using the GBT toward low- and intermediate young stellar objects. Such a monitoring proposal will have several benefits in the study of these objects among which are: 1) allow triggered VLBA observations to study the spatial structure of rather weak masers, 2) to study the variability and investigate the causes and effects of the variability, and 3) help determine the evolutionary status of the water masers as they pertain to the evolution of the young stellar objects themselves. We request 4 hours of telescope time every two weeks over the course of the next eight months.

**Investigators**
Name	Other *	Institution	Email	Phone
Mark Claussen	PI	NRAO-SOC	mclausse@nrao.edu	505 835 7284
Al Wootten		NRAO-CV	awootten@nrao.edu	434 296 0329
Kevin Marvel		American Astronomical Society	marvel@aas.org	202 328-2010
Bruce Wilking		University of Missouri	brucew@bok.umsl.edu	314 516 5023

* PI = Principal Investigator; T = Thesis observations; S = Student

Front Ends

Gregorian K(18.0 to 26.5 GHz)

Back Ends

GBT Spectrometer

Type of Observing

Monitor
Spectroscopy

Switching Type

Frequency switching
Position switching

Allocated time: 8.00 hours.

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