The Seoul National University AGN Monitoring Project. II. BLR Size and Black Hole Mass of Two AGNs

Suvendu Rakshit, Jong Hak Woo, Elena Gallo, Edmund Hodges-Kluck, Jaejin Shin, Yiseul Jeon, Hyun Jin Bae, Vivienne Baldassare, Hojin Cho, Wanjin Cho, Adi Foord, Daeun Kang, Wonseok Kang, Marios Karouzos, Minjin Kim, Taewoo Kim, Huynh Anh N. Le, Daeseong Park, Songyoun Park, Donghoon SonHyun Il Sung, Vardha N. Bennert, Matthew A. Malkan

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Active galactic nuclei (AGNs) show a correlation between the size of the broad line region and the monochromatic continuum luminosity at 5100 Å, allowing black hole mass estimation based on single-epoch spectra. However, the validity of the correlation is yet to be clearly tested for high-luminosity AGNs. We present the first reverberation mapping results of the Seoul National University AGN Monitoring Project (SAMP), which is designed to focus on luminous AGNs for probing the high end of the size-luminosity relation. We report time lag measurements of two AGNs, namely, 2MASS J10261389+5237510 and SDSS J161911.24+501109.2, using the light curves obtained over an ∼1000 days period with an average cadence of 10 and 20 days, respectively, for photometry and spectroscopy monitoring. Based on a cross-correlation analysis and Hβ line width measurements, we determine the Hβ lag as and days in the observed frame, and black hole mass as and respectively, for 2MASS J1026 and SDSS J1619.

Original languageEnglish
Article number93
JournalAstrophysical Journal
Volume886
Issue number2
DOIs
StatePublished - 1 Dec 2019

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