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The Mass of the Black Hole in the Quasar PG 2130+099

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/47944

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Title: The Mass of the Black Hole in the Quasar PG 2130+099
Creators: Grier, C. J.; Peterson, B. M.; Bentz, M. C.; Denney, K. D.; Eastman, J. D.; Dietrich, M.; Pogge, R. W.; Prieto, J. L.; DePoy, D. L.; Assef, R. J.; Atlee, D. W.; Bird, J.; Eyler, M. E.; Peeples, M. S.; Siverd, R.; Watson, L. C.; Yee, J. C.
Keywords: galaxies: active
galaxies: nuclei
galaxies: Seyfert
quasars: emission lines
Issue Date: 2008-12-01
Publisher: American Astronomical Society
Citation: C. J. Grier et al, "The Mass of the Black Hole in the Quasar PG 2130+099," The Astrophysical Journal 688, no. 2 (2008), doi:10.1086/592269
DOI: 10.1086/592269
Abstract: We present the results of a recent reverberation-mapping campaign undertaken to improve measurements of the radius of the broad-line region and the central black hole mass of the quasar PG 2130+099. Cross-correlation of the 5100 Å continuum and Hβ emission-line light curves yields a time lag of 22.9 _−4.3 ^+4.4 days, corresponding to a central black hole mass M_BH = (3.8 ± 1.5) × 10^7 M_sun. This value supports the notion that previous measurements yielded an incorrect lag. We reanalyze previous data sets to investigate the possible sources of the discrepancy and conclude that previous measurement errors were apparently caused by a combination of undersampling of the light curves and long-term secular changes in the Hβ emission-line equivalent width. With our new measurements, PG 2130+099 is no longer an outlier in either the R_BLR-L or the M_BH-σ* relationship.
ISSN: 1538-4357
URI: http://hdl.handle.net/1811/47944
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