NOAO >   Observing Info >   Approved Programs >   2013B-0257

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Proposal Information for 2013B-0257


PI: Jonelle Walsh, The University of Texas at Austin, jlwalsh@astro.as.utexas.edu
Address: Department of Astronomy, 2515 Speedway, Stop C1400, Austin, TX 78712-1205, USA

CoI: Remco van den Bosch, Max Planck Institute for Astronomy
CoI: Kayhan Gultekin, University of Michigan
CoI: Karl Gebhardt, The University of Texas at Austin
CoI: Douglas Richstone, University of Michigan
CoI: Akin Yildirim, Max Planck Institute for Astronomy

Title: Measuring Black Hole Masses in Compact, High-Dispersion Galaxies

Abstract: Correlations linking the mass of the black hole in the centers of galaxies to bulge properties have been clearly established over the past decade. However, there still remain major open questions, particularly concerning the sparsely populated upper end of the black hole mass distribution. With extreme stellar velocity dispersions of \sigma=340 km s^-1 and \sigma=345 km s^-1, the nearby galaxies UGC 2261 and UGC 2844 could host some of the most massive black holes known. These galaxies are compact, rotating, and have small luminosities for their large dispersions, in sharp contrast to the objects typically found at the upper end of the black hole mass - bulge relations. We propose to use AO-assisted OSIRIS and NIFS observations to carry out a stellar dynamical measurement of the black holes in these galaxies, leading to a better understanding of the poorly characterized high end of the scaling relationships.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2013B-0257

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