Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Reverberation mapping of the kepler field agn KA1858+4850
Astrophysical Journal, Volume 795, No. 1, Article 38, Year 2014
Notification
URL copied to clipboard!
Description
KA1858+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 Hβ 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 days and τJAVELINdays. The Hβ rms line profile has a width of σline = 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 for the mass of the central black hole and an Eddington ratio of L/L Edd 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. © 2014. The American Astronomical Society. All rights reserved..
Authors & Co-Authors
Pei, Liuyi
United States, Irvine
University of California, Irvine
Barth, Aaron J.
United States, Irvine
University of California, Irvine
Carson, Daniel J.
United States, Irvine
University of California, Irvine
Cenko, Stephen Bradley
United States, College Park
University of Maryland, College Park
United States, Greenbelt
Nasa Goddard Space Flight Center
Clubb, Kelsey I.
United States, Berkeley
University of California, Berkeley
Cucchiara, Antonino
United States, Berkeley
Lawrence Berkeley National Laboratory
United States, Berkeley
University of California, Berkeley
Desjardins, Tyler D.
Canada, London
Western University
Edelson, Richard A.
United States, College Park
University of Maryland, College Park
Fang, Jerome J.
United States, Santa Cruz
University of California, Santa Cruz
Filippenko, Alexei V.
United States, Berkeley
University of California, Berkeley
Fox, Ori D.
United States, Berkeley
University of California, Berkeley
Furniss, Amy K.
United States, Palo Alto
Stanford University
Gates, Elinor L.
United States, Mount Hamilton
Lick Observatory
Gregg, Michael D.
United States, Davis
University of California, Davis
Horst, John Chuck
United States, San Diego
San Diego State University
Joner, Michael D.
United States, Provo
Brigham Young University
Kelly, Patrick L.
United States, Berkeley
University of California, Berkeley
Lacy, Mark D.
United States, Charlottesville
National Radio Astronomy Observatory
Laney, Clifton David
United States, Provo
Brigham Young University
Leonard, Douglas C.
United States, San Diego
San Diego State University
Li, Weidong
United States, Berkeley
University of California, Berkeley
Malkan, Matthew A.
United States, Los Angeles
University of California, Los Angeles
Neeleman, Marcel
United States, La Jolla
University of California, San Diego
Nguyen, My L.
United States, Laramie
University of Wyoming
Prochaska, Jason Xavier
United States, Santa Cruz
University of California, Santa Cruz
Sand, David J.
United States, Santa Barbara
Las Cumbres Observatory Global Telescope Network, Inc
United States, Lubbock
Texas Tech University
Shivvers, Isaac S.
United States, Berkeley
University of California, Berkeley
Silverman, Jeffrey M.
United States, Austin
The University of Texas at Austin
Werk, Jessica K.
United States, Santa Cruz
University of California, Santa Cruz
Statistics
Citations: 31
Authors: 29
Affiliations: 20
Identifiers
Doi:
10.1088/0004-637X/795/1/38
ISSN:
0004637X
Research Areas
Environmental