J/ApJS/253/20 SEAMBHs XII. Reberberation mapping for 15 PG QSOs (Hu+, 2021)
Supermassive black holes with high accretion rates in active galactic nuclei.
XII. Reverberation mapping results for 15 PG quasars from a long-duration high-
cadence campaign.
Hu C., Li S.-S., Yang S., Yang Z.-X., Guo W.-J., Bao D.-W., Jiang B.-W.,
Du P., Li Y.-R., Xiao M., Songsheng Y.-Y., Yu Z., Bai J.-M., Ho L.C.,
Brotherton M.S., Aceituno J., Winkler H., Wang J.-M.
(The SEAMBH collaboration)
<Astrophys. J. Suppl. Ser., 253, 20 (2021)>
=2021ApJS..253...20H 2021ApJS..253...20H
ADC_Keywords: Galaxies, Seyfert; Active gal. nuclei; Black holes;
Spectra, optical; Redshifts; Photometry, UBV; QSOs
Keywords: Supermassive black holes ; Seyfert galaxies ; Active galactic nuclei ;
Quasars ; Reverberation mapping ; Time domain astronomy
Abstract:
In this work, we present the first results of the long-term
high-cadence spectroscopic monitoring of 15 PG quasars with relatively
strong FeII emission, as a part of a broader reverberation mapping
campaign performed using the Calar Alto Observatory's 2.2m telescope.
The V-band, 5100Å continuum, and Hβ broad emission line light
curves are measured for a set of quasars for periods ranging from
dozens to more than a hundred epochs between 2017 May and 2020 July.
Accurate time lags between the variations of the Hβ broad-line
fluxes and the optical continuum strength are obtained for all 15
quasars, ranging from 17.0-3.2+2.5 to 95.9-23.9+7.1 days in
the rest frame. The virial masses of the central supermassive black
holes are derived for all 15 quasars, ranging between 0.50-0.19+0.18
and 19.17-2.73+2.98 in units of 107M☉. For 11 of the
objects in our sample, this is the first reverberation analysis to be
published. Of the rest, two objects have been the subject of previous
reverberation studies, but we determine time lags for these that are
only half as long as those found in the earlier investigations, which
had only been able to sample much more sparsely. The remaining two
objects have previously been monitored with high sampling rates. Our
results here are consistent with the earlier findings, in the sense
that the time lag and the line width vary inversely, consistent with
virialization.
Description:
The spectra (4000-8000Å) were captured at the CAHA 2.2m telescope,
using the Calar Alto Faint Object Spectrograph (CAFOS) with Grism G-200.
Broad-band photometric images were also taken by CAFOS in direct
imaging mode with a Johnson V filter, prior to the spectral exposures.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 75 15 Objects and observations
table2.dat 45 3629 Light curves
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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/ApJ/687/78 : FeII emission in quasars (Hu+, 2008)
J/ApJ/755/60 : Reverberation mapping for 5 Seyfert 1 galaxies (Grier+, 2012)
J/ApJ/782/45 : SEAMBHs. I. Mrk 142, Mrk 335, and IRAS F12397+3333 (Du+, 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/827/118 : A new reverberation mapping campaign on NGC 5548 (Lu+, 2016)
J/ApJ/840/97 : Opt. reverberation mapping for 5 AGNs (Fausnaugh+, 2017)
J/ApJ/869/142 : Monitoring AGNs with Hβ Asymmetry (MAHA). I. (Du+, 2018)
J/ApJ/856/6 : SEAMBHs IX. 10 new Hβ light curves (Du+, 2018)
J/ApJ/886/42 : Reverberation mapping & opt. spectra data of AGNs (Du+, 2019)
J/ApJ/886/93 : SAMP. III. Opt. LCs and spectra of two AGNs (Rakshit+, 2019)
J/ApJ/876/49 : A 10yr reverberation mapping campaign for 3C273 (Zhang+, 2019)
J/ApJ/877/23 : SEAMBHs. X. RM campaign compilation (Lu+, 2019)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 A2 --- --- [PG]
4- 11 A8 --- PG PG designation of the object (HHMM+DDd; B1950)
13- 22 A10 --- OName Other name
24- 25 I2 h RAh Hour of right ascension (J2000)
27- 28 I2 min RAm Minute of right ascension (J2000)
30- 34 F5.2 s RAs Second of right ascension (J2000)
36 A1 --- DE- Sign of declination (J2000)
37- 38 I2 deg DEd Degree of declination (J2000)
40- 41 I2 arcmin DEm Arcminute of declination (J2000)
43- 46 F4.1 arcsec DEs Arcsecond of declination (J2000)
48- 53 F6.4 --- z [0.025/0.17] Redshift from the narrow [OIII]
lines in our spectra
55- 59 F5.3 mag Av [0.016/0.12] Galactic extinction in the V-band
from Schlafly & Finkbeiner (2011ApJ...737..103S 2011ApJ...737..103S)
61- 63 I3 --- Nobs [34/149] Number of observation epochs
65 I1 d Tmed [3/9] Median time between spectra
67- 70 I4 d JD1 [7882/8693] Starting Julian Date of observation;
JD-245000
72- 75 I4 d JD2 [8057/9043] Ending Julian Date of observation;
JD-245000
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Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- PG PG designation of the object (HHMM+DDd; B1950)
10- 13 A4 --- x_Flux Name of the flux measurement (1)
15- 25 F11.3 d JD [2457882.5/2459043.7] Julian Date of observation
27- 35 E9.3 --- Flux [6.2e-16/3.8] Flux
37- 45 E9.3 --- e_Flux [1.4e-18/0.09] Uncertainty in Flux
--------------------------------------------------------------------------------
Note (1): Flux measurements are as follows:
V = V-band instrumental magnitude in mag units
5100 = Spectroscopic 5100Å continuum in 10-15erg/s/cm2/Å
(10-17W/m2/nm) units
Hb = Broad Hβ flux in 10-13erg/s/cm2 (10-16W/m2) units
--------------------------------------------------------------------------------
History:
From electronic version of the journal
References:
Du et al. Paper I. 2014ApJ...782...45D 2014ApJ...782...45D Cat. J/ApJ/782/45
Wang et al. Paper II. 2014ApJ...793..108W 2014ApJ...793..108W Cat. J/ApJ/793/108
Hu et al. Paper III. 2015ApJ...804..138H 2015ApJ...804..138H
Du et al. Paper IV. 2015ApJ...806...22D 2015ApJ...806...22D Cat. J/ApJ/806/22
Du et al. Paper V. 2016ApJ...825..126D 2016ApJ...825..126D Cat. J/ApJ/825/126
Du et al. Paper VI. 2016ApJ...820...27D 2016ApJ...820...27D
Xiao et al. Paper VII. 2018ApJ...864..109X 2018ApJ...864..109X
Li et al. Paper VIII. 2018ApJ...869..137L 2018ApJ...869..137L
Du et al. Paper IX. 2018ApJ...856....6D 2018ApJ...856....6D Cat. J/ApJ/856/6
Lu et al. Paper X. 2019ApJ...877...23L 2019ApJ...877...23L Cat. J/ApJ/877/23
Cackett et al. Paper XI. 2020ApJ...896....1C 2020ApJ...896....1C Cat. J/ApJ/896/1
Hu et al. Paper XII. 2021ApJS..253...20H 2021ApJS..253...20H This catalog
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 03-May-2021