NOAO >   Observing Info >   Approved Programs >   2009B-0073

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Proposal Information for 2009B-0073


PI: Karl Gebhardt, University of Texas, gebhardt@astro.as.utexas.edu
Address: Astronomy Department, 1 University Station, C1400, Austin, TX 78712, USA

CoI: Josh Adams, University of Texas
CoI: Tod Lauer, NOAO
CoI: Douglas Richstone, University of Michigan
CoI: Scott Tremaine, IAS
CoI: Sandra Faber, University of California, Santa Cruz
CoI: Remco van den Bosch, University of Texas
CoI: Kayhan Gultekin, University of Michigan

Title: Black Hole Mass and Orbital Structure in NGC507 and NGC741

Abstract: We propose to measure the black hole mass and orbital structure in NGC 507 and NGC 741. Both galaxies are giant ellipticals and have shallow central light profiles, making them important for understanding how the black hole interacts with the galaxy. In addition to the black hole mass, we will simultaneously determine the central orbital structure which contains a fossil record of the mass growth accretion mechanism of the black hole. With laser-assisted adaptive optics and NIFS, we will measure the central kinematics. From our successful LGS observation with NIFS on M87, we understand the required observational strategy (including exposure times) and data analysis techniques. Thus, we are very confident in our ability to measure reliably both the back hole mass and orbital structure. The next step in black hole studies is to understand systematic effects. NGC 507 and NGC 741 will then be two of the few galaxies at the upper mass end with a robust and reliable estimate for the black hole mass and stellar orbital structure.


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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