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Gas disks and supermassive black holes in nearby radio galaxies

Published online by Cambridge University Press:  01 December 2004

Jacob Noel-Storr ,
Stefi Baum ,
Chris O'Dea  and
Gijs Verdoes Kleijn
Jacob Noel-Storr
Affiliation:
Department of Astronomy, Columbia University, New York, NY 10027, USA email: jake@astro.columbia.edu
Stefi Baum
Affiliation:
Space Telescope Science Institute, USA
Chris O'Dea
Affiliation:
Space Telescope Science Institute, USA
Gijs Verdoes Kleijn
Affiliation:
European Southern Observatory, Germany
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Abstract

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We present the initial results of our analysis of line emission produced in gas disks found at the centers of a sample of nearby radio galaxies with radio jets. We obtained data using STIS (The Space Telescope Imaging Spectrograph) at three parallel slit positions on the nucleus of each galaxy. This allows us to map the Hα + [NII] flux, the gas radial velocity and the velocity dispersion. We found that we cannot rule out a rotating disk model for the gas in any case. We found that for 62% of the galaxies the fit is improved in the nucleus by the inclusion of an additional broad component. By comparing the observed central kinematics to model gas disks we were able to estimate the masses of nuclear black holes in 12 of the sample galaxies.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
POSTERS
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS222 , March 2004 , pp. 347 - 348
Copyright
© 2004 International Astronomical Union