NOAO > Observing Info > Approved Programs > 2009A-0247
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NOAO > Observing Info > Approved Programs > 2009A-0247 |
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PI: Douglas R. Gies, Georgia State University, gies@chara.gsu.edu
Address: Physics Department, P.O. Box 4106, Atlanta, GA 30302-4106, USA
CoI: Wenjin Huang, University of Washington
CoI: Rachel Matson, Georgia State University
CoI: Saida Caballero-Nieves, Georgia State University
Title: Angular Momentum of Newborn Massive Stars in M17
Abstract:
The star forming region of M17 offers us a glimpse of some of the
youngest and most massive stars in our part of the Galaxy. The first O-
stars to appear from the natal cloud offer us important clues about how
the star formation process solves the angular momentum problem in
creating massive stars. Here we propose a program of spatially
resolved, moderate dispersion spectroscopy with Gemini and NIFS/Altair
of the brightest O-stars in M17. These observations will establish the
incidence of close and wide binaries and determine the projected
rotational velocities (plus the stellar effective temperatures and
gravities). The results will show how the angular momentum of the natal
cloud is apportioned into rotational and orbital angular momentum for
the most massive stars.
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360
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NOAO > Observing Info > Approved Programs > 2009A-0247 |
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