Computer Science – Databases
Scientific paper
Jun 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...208.5207r&link_type=abstract
American Astronomical Society Meeting 208, #52.07; Bulletin of the American Astronomical Society, Vol. 38, p.132
Computer Science
Databases
Scientific paper
We present supermassive black hole mass estimates for quasars with rest-frame UV spectra available in the Sloan Digital Sky Survey database. We use the line dispersion rather than the full width at half maximum of the low-ionization MgII emission line and an empirical correlation between the radius of the broad line region and the continuum luminosity at 3000 Angstroms. This empirical correlation is generated from UV spectra of low-redshift quasars in the HST/IUE databases which have corresponding reverberation mapping estimates of the broad line region's radius. The main algorithm of the line dispersion measurement is based on fitting a power-law continuum and an FeII emission template to the quasar spectra around the MgII line. Despite the fact that the fitting is sensitive to the accuracy of the quasar's redshift, the results are consistent with previous studies of MgII for quasars in our sample. We will use our sample to study the black hole mass function and its evolution, as well as correlations (or lack thereof) between black hole masses and other quasar properties.
Hall Patrick B.
Rafiee Alireza
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