Mass Evolution of Quasar Supermassive Black Holes

Details Mass Evolution of Quasar Supermassive Black Holes Mass Evolution of Quasar Supermassive Black Holes

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21441710s&link_type=abstract

American Astronomical Society, AAS Meeting #214, #417.10; Bulletin of the American Astronomical Society, Vol. 41, p.686

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Scientific paper

We have computed the mass of the central black hole in 45 quasars taken from the Sloan Digital Sky Survey (SDSS). The objects were chosen to sample the peak in quasar evolution and have redshifts in the range 1.85 < z < 4.26. Masses were computed using standard gas dynamics techniques using the luminosity at 1350Å and the width (FWHM) of the Doppler broadened Carbon IV emission line. The luminosity has been shown to scale with the size of the BLR. Assuming Keplerian motion of the gas in the BLR, the line width and luminosity were used to calculate the mass of the object being orbited by the gas - the central supermassive black hole of the quasar. We will discuss how the mass of the SMBHs change over the range of redshifts and how this may be correlated with other quasar properties. We would like to acknowledge The Arkansas Center for Space and Planetary Sciences and NASA EBSCoR.

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