A Comparison of Two Independent Techniques for Measuring Supermassive Black Hole Masses

Details A Comparison of Two Independent Techniques for Measuring Supermassive Black Hole Masses A Comparison of Two Independent Techniques for Measuring Supermassive Black Hole Masses

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21724609a&link_type=abstract

American Astronomical Society, AAS Meeting #217, #246.09; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

In this study we compare the masses of supermassive black holes (SMBH) in 35 galaxies estimated using reverberation mapping to those determined using the SMBH mass versus pitch angle relation. Both methods provide an independent determination of SMBH mass. We selected a sub-sample of nearly face-on spiral galaxies and used IRAF to determine the ellipticity and major-axis position angle in order to deproject the galaxy images to face-on. A two-dimensional Fast Fourier Transform was then applied to the deprojected images in order to measure the spiral arm pitch angles and, thereby, provide a SMBH mass estimate.

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