The Mass of the Black Hole in the Seyfert 1 Galaxy NGC 4593 from Reverberation Mapping

The Mass of the Black Hole in the Seyfert 1 Galaxy NGC 4593 from Reverberation Mapping

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 Hb emission-line light curve with the optical continuum light curve reveals an...

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Veröffentlicht in:The Astrophysical journal 2006-12, Vol.653 (1), p.152-158
Hauptverfasser: Denney, Kelly D, Bentz, Misty C, Peterson, Bradley M, Pogge, Richard W, Cackett, Edward M, Dietrich, Matthias, Fogel, Jeffrey K. J, Ghosh, Himel, Horne, Keith D, Kuehn, Charles, Minezaki, Takeo, Onken, Christopher A, Pronik, Vladimir I, Richstone, Douglas O, Sergeev, Sergey G, Vestergaard, Marianne, Walker, Matthew G, Yoshii, Yuzuru
Format: Artikel
Sprache:eng
Schlagworte:
Astronomy
Earth, ocean, space
Exact sciences and technology
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Zusammenfassung: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 Hb emission-line light curve with the optical continuum light curve reveals an emission-line time delay of t sub(cent) = 3.73 c 0.75 days. By combining this time delay with the Hb line width, we derive a central black hole mass of M sub(BH) = (9.8 c 2.1) x 10 super(6) M sub( ), an improvement in precision of a factor of several over past results.
ISSN:0004-637X
1538-4357
DOI:10.1086/508533