NOAO >   Observing Info >   Approved Programs >   2009B-0507

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Proposal Information for 2009B-0507


PI: R. Michael Rich, UCLA, rmr@astro.ucla.edu
Address: Physics Department, PAB, Box 430 Portola Plaza, Los Angeles, CA 90095-1547

CoI: Christian Howard, UCLA
CoI: David B. Reitzel, UCLA
CoI: HongSheng Zhao, University of St. Andrews
CoI: Konrad Kuijken, Leiden University
CoI: Annie Robin, Besancon Observatory
CoI: Roberto de Propris, Cerro Tololo/NOAO
CoI: Kim Griest, UCSDE
CoI: Andreas Koch, UCLA
CoI: Peter Frinchaboy, University of Wisconsin-Madison
CoI: Mario Soto, Leiden University
CoI: Will Clarkson, Space Telescope Science Institute
CoI: Christian Johnson, Indiana University
CoI: Jon Fulbright, Johns Hopkins University
CoI: Will Clarkson, UCLA

Title: The Bulge Radial Velocity Assay: Extension toward the Plane and the Inner Halo

Abstract: We propose to continue our radial velocity survey of M giant stars in the Galactic bulge, inner disk, and inner halo. The overall aim of the project is describe the kinematics of the bulge, and its abundance dependence, and to compare with dynamical models, elucidating the formation history and dynamical state of the bulge. Our aim in 2009B is to push our survey toward the plane and to complete the strip at b=- 2\deg, and to extend our probe of the bulge/disk/halo boundaries, with fields at b=-10\deg and fields extending at l>12\deg. The b=- 2\deg strip is intended to probe the mass distribution and orbit structure of the inner bulge. The band at b=-10 \deg is aimed to find the point where cylindrical rotation breaks down, and to probe the region where the bulge metallicity and velocity dispersion is dropping, suggesting that we are reaching the bulge/halo boundary. The full dataset is in active use by 2 theoretical groups, being compared with N- body and self-consistent bar models.


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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