Reverberation Mapping Of The Kepler Field AGN Ka1858+4850

dc.contributor.utaustinauthorSilverman, Jeffrey M.en_US
dc.creatorPei, Liuyien_US
dc.creatorBarth, Aaron J.en_US
dc.creatorAldering, Greg S.en_US
dc.creatorBriley, Michael M.en_US
dc.creatorCarroll, Carla J.en_US
dc.creatorCarson, Daniel J.en_US
dc.creatorCenko, S. Bradleyen_US
dc.creatorClubb, Kelsey I.en_US
dc.creatorCohen, Daniel P.en_US
dc.creatorCucchiara, Antoninoen_US
dc.creatorDesjardins, Tyler D.en_US
dc.creatorEdelson, Ricken_US
dc.creatorFang, Jerome J.en_US
dc.creatorFedrow, Joseph M.en_US
dc.creatorFilippenko, Alexei V.en_US
dc.creatorFox, Ori D.en_US
dc.creatorFurniss, Amyen_US
dc.creatorGates, Elinor L.en_US
dc.creatorGregg, Michaelen_US
dc.creatorGustafson, Scotten_US
dc.creatorHorst, J. Chucken_US
dc.creatorJoner, Michael D.en_US
dc.creatorKelly, Patrick L.en_US
dc.creatorLacy, Marken_US
dc.creatorLaney, C. Daviden_US
dc.creatorLeonard, Douglas C.en_US
dc.creatorLi, Weidongen_US
dc.creatorMalkan, Matthew A.en_US
dc.creatorMargon, Bruceen_US
dc.creatorNeeleman, Marcelen_US
dc.creatorNguyen, My L.en_US
dc.creatorProchaska, J. Xavieren_US
dc.creatorRoss, Nathaniel R.en_US
dc.creatorSand, David J.en_US
dc.creatorSearcy, Kinchen J.en_US
dc.creatorShivvers, Isaac S.en_US
dc.creatorSilverman, Jeffrey M.en_US
dc.creatorSmith, Graeme H.en_US
dc.creatorSuzuki, Naoen_US
dc.creatorSmith, Krista Lynneen_US
dc.creatorTytler, Daviden_US
dc.creatorWerk, Jessica K.en_US
dc.creatorWorseck, Gaboren_US
dc.description.abstractKA1858+4850 is a narrow-line Seyfert 1 galaxy at redshift 0.078 and is among the brightest active galaxies monitored by the Kepler mission. We have carried out a reverberation mapping campaign designed to measure the broad-line region size and estimate the mass of the black hole in this galaxy. We obtained 74 epochs of spectroscopic data using the Kast Spectrograph at the Lick 3 m telescope from 2012 February to November, and obtained complementary V-band images from five other ground-based telescopes. We measured the H beta light curve lag with respect to the V-band continuum light curve using both cross-correlation techniques (CCF) and continuum light curve variability modeling with the JAVELIN method and found rest-frame lags of tau(CCF) = 13.53(+2.03)(-2.32) days and tau(JAVELIN) = 13.15(+1.08)(-1.00) days. The H beta rms line profile has a width of sigma line = 770 +/- 49 km s(-1). Combining these two results and assuming a virial scale factor of f = 5.13, we obtained a virial estimate of M-BH = 8.06(+1.59)(-1.72) x 10(6) M circle dot for the mass of the central black hole and an Eddington ratio of L/L-Edd approximate to 0.2. We also obtained consistent but slightly shorter emission-line lags with respect to the Kepler light curve. Thanks to the Kepler mission, the light curve of KA1858+4850 has among the highest cadences and signal-to-noise ratios ever measured for an active galactic nucleus; thus, our black hole mass measurement will serve as a reference point for relations between black hole mass and continuum variability characteristics in active galactic nuclei.en_US
dc.description.sponsorshipNSF AST-1108835, AST-1107812, AST-1108665, AST-1211916, AST-1302771, AST-1009571, AST-1210311, AST-0618209en_US
dc.description.sponsorshipTABASGO Foundationen_US
dc.description.sponsorshipChristopher R. Redlich Funden_US
dc.description.sponsorshipNASA NAS5-26555en_US
dc.description.sponsorshipNASA Office of Space Science NNX13AC07Gen_US
dc.description.sponsorshipNASA Science Mission directorateen_US
dc.identifier.citationPei, Liuyi, Aaron J. Barth, Greg S. Aldering, Michael M. Briley, Carla J. Carroll, Daniel J. Carson, S. Bradley Cenko et al. "Reverberation Mapping of the KEPLER Field AGN KA1858+ 4850." The Astrophysical Journal, Vol. 795, No. 1 (Nov., 2014): 38.en_US
dc.relation.ispartofserialAstrophysical Journalen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.subjectgalaxies: activeen_US
dc.subjectgalaxies: individual (1rxsj185800.9+485020)en_US
dc.subjectactive galactic nucleien_US
dc.subjectbroad-line regionen_US
dc.subjectblack-hole massen_US
dc.subjectoptical variabilityen_US
dc.subjectmonitoring projecten_US
dc.subjectluminosity relationshipen_US
dc.subjectrecombination linesen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleReverberation Mapping Of The Kepler Field AGN Ka1858+4850en_US

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