J/ApJ/876/102 Reverberation mapping of the Seyfert Zw I 1 (Huang+, 2019)
Reverberation mapping of the narrow-line Seyfert 1 galaxy I Zwicky 1: black hole
mass.
Huang Y.-K., Hu C., Zhao Y.-L., Zhang Z.-X., Lu K.-X., Wang K., Zhang Y.,
Du P., Li Y.-R., Bai J.-M., Ho L.C., Bian W.-H., Yuan Y.-F., Wang J.-M.
<Astrophys. J., 876, 102 (2019)>
=2019ApJ...876..102H 2019ApJ...876..102H
ADC_Keywords: Active gal. nuclei; Spectra, optical; Photometry, H-beta
Keywords: galaxies: active ; galaxies: individual (I Zw 1) ; galaxies: nuclei
Abstract:
We report results of the first reverberation mapping campaign of
I Zwicky 1 during 2014-2016, which showed unambiguous reverberations
of the broad Hβ line emission in the varying optical continuum.
From analysis using several methods, we obtain a reverberation lag of
τHβ=37.2-4.9+4.5days. Taking a virial factor of
fBLR=1, we find a black hole mass of
M•=9.30-1.38+1.26x106M☉ from the mean spectra.
The accretion rate is estimated to be 203.9-65.8+61.0LEddc-2,
suggesting a super-Eddington accretor, where LEdd is the Eddington
luminosity and c is the speed of light. By decomposing Hubble Space
Telescope images, we find that the stellar mass of the bulge of its
host galaxy is log(Mbulge/M☉)=10.92±0.07. This leads to a
black hole to bulge mass ratio of ∼10-4, which is significantly
smaller than that of classical bulges and elliptical galaxies. After
subtracting the host contamination from the observed luminosity, we
find that I Zw 1 follows the empirical RBLR∝L51001/2
relation.
Description:
Our observations were performed from 2014 November to 2016 February
using the Lijiang 2.4m telescope of Yunnan Observatories, Chinese
Academy of Sciences. A versatile instrument called the Yunnan Faint
Object Spectrograph and Camera (YFOSC) was used. During the
spectroscopic observations, we used grism 14, which covers the
wavelength range of 3800-7200Å. The final spectral resolution was
roughly 500km/s.
Objects:
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RA (ICRS) DE Designation(s)
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00 53 34.93 +12 41 35.9 ZW I 1 = Mrk 1502
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 36 66 Continuum and Hβ Fluxes
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See also:
J/ApJ/269/352 : Quasar evolution (Schmidt+, 1983)
J/ApJ/613/682 : AGN central masses & broad-line region sizes (Peterson+, 2004)
J/A+A/417/515 : I Zw 1 unusual emission line spectrum (Veron-Cetty+, 2004)
J/ApJ/660/1072 : Unified model of active galactic nuclei (Wang+, 2007)
J/AJ/136/773 : Structure of classical bulges and pseudobulges (Fisher+, 2008)
J/ApJ/687/78 : FeII emission in quasars (Hu+, 2008)
J/ApJ/698/895 : Variations in QSOs optical flux (Kelly+, 2009)
J/ApJ/782/45 : SEAMBHs. I. Mrk 142, Mrk 335, and IRAS F12397+3333 (Du+, 2014)
J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)
J/ApJ/793/108 : SEAMBHs. II. Continuum and Hbeta LCs (Wang+, 2014)
J/ApJ/806/22 : SEAMBHs IV. Hβ time lags (Du+, 2015)
J/ApJ/825/126 : SEAMBHs. V. The third year (Du+, 2016)
J/ApJ/818/L14 : RM AGNs accretion rates and BH masses (Du+, 2016)
J/ApJ/856/6 : SEAMBHs IX. 10 new Hβ light curves (Du+, 2018)
J/A+A/620/A118 : Highly Accreting Quasars: SDSS Low z Catalog (Negrete+, 2018)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 F8.4 d JD [271.28/727.01] Julian Date; JD-2456700
10- 15 F6.4 10-15cW/m2/nm F5100 [6.1/7.6] Continuum flux at 5100Å
in units of 10-15erg/s/cm2/s/Å
17- 22 F6.4 10-15cW/m2/nm e_F5100 [0.05/0.6] Uncertainty in F5100
24- 29 F6.4 10-13mW/m2 FHb [2.57/3.35] Integrated Hβ flux
in units of 10-13erg/s/cm2/s
31- 36 F6.4 10-13mW/m2 e_FHb [0.01/0.1] Uncertainty in FHb
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 19-Nov-2020