J/ApJ/905/75 3yrs spectroscopic light curves of PG0026+129 (Hu+, 2020) ================================================================================ Evidence for two distinct broad-line regions from reverberation mapping of PG 0026+129. Hu C., Li S.-S., Guo W.-J., Yang S., Yang Z.-X., Bao D.-W., Jiang B.-W., Du P., Li Y.-R., Xiao M., Songsheng Y.-Y., Yu Z., Bai J.-M., Ho L.C., Bian W.-H., Brotherton M.S., Yuan Y.-F., Aceituno J., Winkler H., Wang J.-M., The SEAMBH collaboration =2020ApJ...905...75H ================================================================================ ADC_Keywords: Spectra, optical; QSOs Keywords: Supermassive black holes ; Seyfert galaxies ; Active galactic nuclei ; Quasars ; Reverberation mapping ; Time domain astronomy Abstract: We report on the results of a new spectroscopic monitoring campaign of the quasar PG 0026+129 at the Calar Alto Observatory 2.2m telescope from 2017 July to 2020 February. Significant variations in the fluxes of the continuum and broad emission lines, including H{beta} and HeII, were observed in the first and third years, and clear time lags between them are measured. The broad H{beta} line profile consists of two Gaussian components: an intermediate-width H{beta}_IC_ with an FWHM of 1964+/-18km/s and another very broad H{beta}_VBC_ with an FWHM of 7570+/-83km/s. H{beta}_IC_ has long time lags of ~40-60days in the rest frame, while H{beta}_VBC_ shows nearly zero time delay with respect to the optical continuum at 5100{AA}. The velocity-resolved delays show consistent results: lags of ~30-50days at the core of the broad H{beta} line and roughly zero lags at the wings. H{beta}_IC_ has a redshift of ~400km/s, which seems to be stable for nearly 30yr by comparing with archived spectra, and may originate from an infall. The rms spectrum of H{beta}_VBC_ shows a double-peaked profile with brighter blue peak and extended red wing in the first year, which matches the signature of a thin disk. Both the double-peaked profile and the near-zero lag suggest that H{beta}_VBC_ comes from a region associated with the part of the accretion disk that emits the optical continuum. Adopting the FWHM (in the rms spectrum) and the time lag measured for the total H{beta} line, and a virial factor of 1.5, we obtain a virial mass of 2.89_-0.69_^+0.60^x10^7^M_{sun}_ for the central black hole in this quasar. Description: Since 2017 May, we started a large reverberation mapping campaign using the CAHA 2.2m telescope at the Calar Alto Observatory in Spain. This campaign is an expansion of the super-Eddington accreting massive black hole (SEAMBH) project (Du+ 2014, J/ApJ/782/45). PG 0026+129 was observed for 47 epochs between 2017-July and 2018-February, 41 epochs between 2018-June and 2019-February, and 39 epochs between 2019-August and 2020-February. For each epoch, broadband images and long-slit spectra were taken by the Calar Alto Faint Object Spectrograph (CAFOS). Objects: ---------------------------------------------------------- RA (ICRS) DE Designation(s) ---------------------------------------------------------- 00 29 13.70 +13 16 03.9 PG 0026+129 = QSO B0026+1259 ---------------------------------------------------------- File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table2.dat 160 121 Light curves of the 5100{AA} continuum and emission lines -------------------------------------------------------------------------------- See also: J/ApJ/269/352 : Quasar evolution (Schmidt+, 1983) J/ApJS/140/143 : HST FOS spectral atlas (Bechtold+, 2002) J/AJ/126/1720 : ugriz and H{alpha} of double-peaked AGN (Strateva+, 2003) J/ApJ/613/682 : AGN central masses & broad-line region sizes (Peterson+, 2004) J/AJ/130/381 : Blueshifted [O III] emission (Boroson+, 2005) J/ApJ/683/L115 : Intermediate-line region in quasars (Hu+, 2008) J/ApJ/687/78 : FeII emission in quasars (Hu+, 2008) J/ApJS/189/15 : FeII emission in a sample of AGN spectra (Kovacevic+, 2010) J/ApJS/201/23 : Spectroscopy of 88 z<0.7 SDSS QSOs (Eracleous+, 2012) J/ApJ/782/45 : SEAMBHs. I. Mrk 142, Mrk 335, and IRAS F12397+3333 (Du+, 2014) J/ApJS/217/26 : Lick AGN monitoring 2011: light curves (Barth+, 2015) J/ApJ/806/22 : SEAMBHs IV. H{beta} time lags (Du+, 2015) J/ApJS/225/29 : NGC 5548 43 year-long monitoring in H{beta} (Bon+, 2016) J/ApJ/840/97 : Optical RM campaign of 5 AGNs (Fausnaugh+, 2017) J/ApJ/851/21 : SDSS RM project first year of observations (Grier+, 2017) J/ApJ/866/133 : Continuum-H{beta} light curves of 5 Seyfert 1 (De Rosa+, 2018) J/ApJ/869/142 : Monitoring AGNs with H{beta} Asymmetry (MAHA). I. (Du+, 2018) J/ApJ/856/6 : SEAMBHs IX. 10 new H{beta} light curves (Du+, 2018) J/ApJ/870/123 : Swift optical & UV flux of four AGNs (Edelson+, 2019) J/ApJ/890/71 : LCs of PG2130+099 (Hu+, 2020) Byte-by-byte Description of file: table2.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 16 F16.8 d JD Julian Date of observation 18- 28 E11.5 cW/m2/nm F5100 [2.5e-15/3.4e-15] 5100{AA} continuum flux in erg/s/cm^2^/{AA} units 30- 40 E11.5 cW/m2/nm e_F5100 [2.3e-18/8.9e-18] Uncertainty in F5100 42- 52 E11.5 mW/m2 FHeII [2.2e-14/6.4e-14] HeII line flux, in erg/s/cm^2^ units 54- 64 E11.5 mW/m2 e_FHeII [6.2e-16/2.4e-15] Uncertainty in FHeII 66- 76 E11.5 mW/m2 FHbVBC [1e-13/1.5e-13] Very broad H{beta} component flux, in erg/s/cm^2^ units 78- 88 E11.5 mW/m2 e_FHbVBC [8e-16/2.9e-15] Uncertainty in FHbVBC 90-100 E11.5 mW/m2 FHbIC [3.6e-14/6.4e-14] Intermediate-width H{beta} component flux, in erg/s/cm^2^ 102-112 E11.5 mW/m2 e_FHbIC [4.4e-16/1.8e-15] Uncertainty in FHbIC 114-124 E11.5 mW/m2 FHbtot [1.5e-13/2.1e-13] Hbeta total flux, in erg/s/cm^2^ units 126-136 E11.5 mW/m2 e_FHbtot [6e-16/2.3e-15] Uncertainty in FHbtot 138-148 E11.5 mW/m2 FFeII [4.7e-14/1.1e-13] FeII line flux, in erg/s/cm^2^ units 150-160 E11.5 mW/m2 e_FFeII [8.8e-16/3.4e-15] Uncertainty in FFeII -------------------------------------------------------------------------------- History: From electronic version of the journal ================================================================================ (End) Prepared by [AAS], Emmanuelle Perret [CDS] 22-Jul-2022