The Mass of the Black Hole in the Seyfert 1 Galaxy NGC 4593 from Reverberation Mapping
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We present new observations leading to an improved black hole mass estimate for the Seyfert 1 galaxy NGC 4593 as part of a reverberation-mapping campaign conducted at the MDM Observatory. Cross-correlation analysis of the H_beta emission-line light curve with the optical continuum light curve reveals an emission-line time delay of 3.73 (+-0.75) days. By combining this time delay with the H_beta line width, we derive a central black hole mass of M_BH = 9.8(+-2.1)x10^6 M_sun, an improvement in precision of a factor of several over past results.
Originalsprog | Engelsk |
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Artikelnummer | 152 |
Tidsskrift | Astrophysical Journal |
Vol/bind | 653 |
Udgave nummer | 1 |
ISSN | 0004-637X |
DOI | |
Status | Udgivet - 18 aug. 2006 |
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