AGN Black Hole Masses from Stellar Dynamics

Details AGN Black Hole Masses from Stellar Dynamics AGN Black Hole Masses from Stellar Dynamics

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003hst..prop.9849p&link_type=abstract

HST Proposal ID #9849

Computer Science

Hst Proposal Id #9849 Agn/Quasars

Scientific paper

We propose to measure the black-hole masses in two reverberation-mapped Seyfert 1 galaxies, NGC 3227 and NGC 4151, by using STIS spectroscopic observations of the Ca II triplet absorption features in the nuclear stellar spectra of these sources. The observations will be carried out on a TOO basis when the active nuclei are faint, thus mitigating the problem of contamination of the starlight component by the scattered light from the active nucleus. These observations will enable the first direct comparison of black-hole masses determined from stellar dynamics {the most frequently used method for quiescent galaxies} with those determined by reverberation mapping {the most frequently used method for active galaxies}.

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