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27 April 2024 |
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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 Son
; Hyun-il Sung
; Vardha N. Bennert
; Matthew A. Malkan
; | | Date: |
6 Oct 2019 | | Abstract: | Active galactic nuclei (AGNs) show a correlation between the size of the
broad line region (BLR) and the monochromatic continuum luminosity at 5100 AA,
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 program (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 a $sim$1000 day
period with an average cadence of $sim$10 and $sim$20 days, respectively for
photometry and spectroscopy monitoring. Based on a cross-correlation analysis
and H$eta$ line width measurements, we determine the H$eta$ lag as
$41.8^{+4.9}_{-6.0}$ and $52.6^{+17.6}_{-14.7}$ days in the observed-frame, and
black hole mass as $3.65^{+0.49}_{-0.57} imes 10^7 M_{odot}$ and
$23.02^{+7.81}_{-6.56} imes 10^7 M_{odot}$, respectively for 2MASS J1026 and
SDSS J1619. | | Source: | arXiv, 1910.2412 | | Services: | Forum | Review | PDF | Favorites | |
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