Physics
Scientific paper
Jul 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004hst..prop10436m&link_type=abstract
HST Proposal ID #10436
Physics
Hst Proposal Id #10436 Agn/Quasars
Scientific paper
Recent work has shown that the mass of a black hole is tightly correlated with the bulge mass of its host galaxy. This relation needs to be understood in the context of black hole growth in its active phase. Highly accreting AGNs, like narrow line Seyfert 1 galaxies {NLS1s}, are found to lie below the black hole mass - bulge velocity dispersion correlation of normal galaxies and broad line AGNs. This result was obtained using FWHM{[OIII]} as a surrogate for the bulge velocity dispersion. To test this result we propose to obtain high resolution images of 10 NLS1s that do not lie on the black hole mass-sigma relation and measure accurate bulge parameters {luminosity and effective radius}. We will obtain an alternate handle on the bulge velocity dispersion through the fundamental plane relations and also find the locus of these NLS1s on the black hole mass-bulge luminosity plane. Testing this result is crucial to understanding the role of accretion on black hole growth, the observed correlations of the black hole mass with the bulge, and the formation and evolution of galaxies.
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