PS1-13cbe: the rapid transition of a Seyfert 2 to a Seyfert 1
Abstract
ABSTRACT We present a nuclear transient event, PS1-13cbe, that was first discovered in the Pan-STARRS1 survey in 2013. The outburst occurred in the nucleus of the galaxy SDSS J222153.87+003054.2 at z = 0.123 55, which was classified as a Seyfert 2 in a pre-outburst archival Sloan Digital Sky Survey (SDSS) spectrum. PS1-13cbe showed the appearance of strong broad H α and H β emission lines and a non-stellar continuum in a Magellan spectrum taken 57 d after the peak of the outburst that resembled the characteristics of a Seyfert 1. These broad lines were not present in the SDSS spectrum taken a decade earlier and faded away within 2 yr, as observed in several late-time MDM spectra. We argue that the dramatic appearance and disappearance of the broad lines and a factor of ∼8 increase in the optical continuum are most likely caused by variability in the pre-existing accretion disc than a tidal disruption event, supernova, or variable obscuration. The time-scale for the turn-on of the optical emission of ∼70 d observed in this transient is among the shortest observed in a ‘changing-look’ active galactic nucleus.
- Authors:
-
[1];
[7];
- Astrophysical Institute, Department of Physics and Astronomy, 251B Clippinger Lab, Ohio University, Athens, OH 45701, USA
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
- Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA
- The Oskar Klein Centre and Department of Astronomy, Stockholm University, AlbaNova, SE-106 91 Stockholm, Sweden
- Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) and Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, USA
- Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA, Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA
- Kavli Institute for Cosmological Physics, The University of Chicago, Chicago, IL 60637, USA
- GMTO Corp., 251 S. Lake Ave., Pasadena, CA 91101, USA
- Ecole Normale Suprieure ENS, 24, rue Lhomond, Paris F-75005, France
- University Observatory Munich, Scheinerstr. 1, D-81679 Munich, Germany, Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
- Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1528670
- Resource Type:
- Published Article
- Journal Name:
- Monthly Notices of the Royal Astronomical Society
- Additional Journal Information:
- Journal Name: Monthly Notices of the Royal Astronomical Society Journal Volume: 487 Journal Issue: 3; Journal ID: ISSN 0035-8711
- Publisher:
- Oxford University Press
- Country of Publication:
- United Kingdom
- Language:
- English
Citation Formats
Katebi, Reza, Chornock, Ryan, Berger, Edo, Jones, David O., Lunnan, Ragnhild, Margutti, Raffaella, Rest, Armin, Scolnic, Daniel M., Burgett, William S., Kaiser, Nick, Kudritzki, Rolf-Peter, Magnier, Eugene A., Wainscoat, Richard J., and Waters, Christopher. PS1-13cbe: the rapid transition of a Seyfert 2 to a Seyfert 1. United Kingdom: N. p., 2019.
Web. doi:10.1093/mnras/stz1552.
Katebi, Reza, Chornock, Ryan, Berger, Edo, Jones, David O., Lunnan, Ragnhild, Margutti, Raffaella, Rest, Armin, Scolnic, Daniel M., Burgett, William S., Kaiser, Nick, Kudritzki, Rolf-Peter, Magnier, Eugene A., Wainscoat, Richard J., & Waters, Christopher. PS1-13cbe: the rapid transition of a Seyfert 2 to a Seyfert 1. United Kingdom. https://doi.org/10.1093/mnras/stz1552
Katebi, Reza, Chornock, Ryan, Berger, Edo, Jones, David O., Lunnan, Ragnhild, Margutti, Raffaella, Rest, Armin, Scolnic, Daniel M., Burgett, William S., Kaiser, Nick, Kudritzki, Rolf-Peter, Magnier, Eugene A., Wainscoat, Richard J., and Waters, Christopher. Wed .
"PS1-13cbe: the rapid transition of a Seyfert 2 to a Seyfert 1". United Kingdom. https://doi.org/10.1093/mnras/stz1552.
@article{osti_1528670,
title = {PS1-13cbe: the rapid transition of a Seyfert 2 to a Seyfert 1},
author = {Katebi, Reza and Chornock, Ryan and Berger, Edo and Jones, David O. and Lunnan, Ragnhild and Margutti, Raffaella and Rest, Armin and Scolnic, Daniel M. and Burgett, William S. and Kaiser, Nick and Kudritzki, Rolf-Peter and Magnier, Eugene A. and Wainscoat, Richard J. and Waters, Christopher},
abstractNote = {ABSTRACT We present a nuclear transient event, PS1-13cbe, that was first discovered in the Pan-STARRS1 survey in 2013. The outburst occurred in the nucleus of the galaxy SDSS J222153.87+003054.2 at z = 0.123 55, which was classified as a Seyfert 2 in a pre-outburst archival Sloan Digital Sky Survey (SDSS) spectrum. PS1-13cbe showed the appearance of strong broad H α and H β emission lines and a non-stellar continuum in a Magellan spectrum taken 57 d after the peak of the outburst that resembled the characteristics of a Seyfert 1. These broad lines were not present in the SDSS spectrum taken a decade earlier and faded away within 2 yr, as observed in several late-time MDM spectra. We argue that the dramatic appearance and disappearance of the broad lines and a factor of ∼8 increase in the optical continuum are most likely caused by variability in the pre-existing accretion disc than a tidal disruption event, supernova, or variable obscuration. The time-scale for the turn-on of the optical emission of ∼70 d observed in this transient is among the shortest observed in a ‘changing-look’ active galactic nucleus.},
doi = {10.1093/mnras/stz1552},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 3,
volume = 487,
place = {United Kingdom},
year = {2019},
month = {6}
}
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Works referenced in this record:
A systematic search for changing-look quasars in SDSS
journal, January 2016
- MacLeod, Chelsea L.; Ross, Nicholas P.; Lawrence, Andy
- Monthly Notices of the Royal Astronomical Society, Vol. 457, Issue 1
Optical Variability in Active Galactic Nuclei: Starbursts or Disk Instabilities?
journal, September 1998
- Kawaguchi, T.; Mineshige, S.; Umemura, M.
- The Astrophysical Journal, Vol. 504, Issue 2
On the nature of rapid X-ray variability in active galactic nuclei
journal, December 1993
- Green, A. R.; McHardy, I. M.; Lehto, H. J.
- Monthly Notices of the Royal Astronomical Society, Vol. 265, Issue 3
Tests for Standard Accretion Disk Models by Variability in Active Galactic Nuclei
journal, April 2008
- Liu, H. T.; Bai, J. M.; Zhao, X. H.
- The Astrophysical Journal, Vol. 677, Issue 2
Multiple tidal disruption flares in the active galaxy IC 3599
journal, August 2015
- Campana, S.; Mainetti, D.; Colpi, M.
- Astronomy & Astrophysics, Vol. 581
Mustang high Angular Resolution Sunyaev-Zel'Dovich Effect Imaging of Substructure in four Galaxy Clusters
journal, May 2011
- Korngut, P. M.; Dicker, S. R.; Reese, E. D.
- The Astrophysical Journal, Vol. 734, Issue 1
Seyfert 1 Mutation of the Classical Seyfert 2 Nucleus NGC 7582
journal, July 1999
- Aretxaga, Itziar; Joguet, B.; Kunth, D.
- The Astrophysical Journal, Vol. 519, Issue 2
The host galaxies of active galactic nuclei
journal, December 2003
- Kauffmann, Guinevere; Heckman, Timothy M.; Tremonti, Christy
- Monthly Notices of the Royal Astronomical Society, Vol. 346, Issue 4
The Discovery of the First “Changing Look” Quasar: new Insights into the Physics and Phenomenology of Active Galactic Nuclei
journal, February 2015
- LaMassa, Stephanie M.; Cales, Sabrina; Moran, Edward C.
- The Astrophysical Journal, Vol. 800, Issue 2
X-Rays from the Location of the Double-humped Transient ASASSN-15lh
journal, February 2017
- Margutti, R.; Metzger, B. D.; Chornock, R.
- The Astrophysical Journal, Vol. 836, Issue 1
The tidal disruption of a star by a massive black hole
journal, November 1989
- Evans, Charles R.; Kochanek, Christopher S.
- The Astrophysical Journal, Vol. 346
NGC 3065: A Certified LINER with Broad, Variable Balmer Lines
journal, June 2001
- Eracleous, Michael; Halpern, Jules P.
- The Astrophysical Journal, Vol. 554, Issue 1
THE TYPECASTING OF ACTIVE GALACTIC NUCLEI: Mrk 590 NO LONGER FITS THE ROLE
journal, November 2014
- Denney, K. D.; De Rosa, G.; Croxall, K.
- The Astrophysical Journal, Vol. 796, Issue 2
Variation of the spectrum of the Seyfert galaxy NGC 7603.
journal, December 1976
- Tholine, J. E.; Osterbrock, D. E.
- The Astrophysical Journal, Vol. 210
Ultraviolet variability of NGC 5548 - Dynamics of the continuum production region and geometry of the broad-line region
journal, April 1991
- Krolik, J. H.; Horne, Keith; Kallman, T. R.
- The Astrophysical Journal, Vol. 371
The size of the Narrow-Line-Emitting Region in the Seyfert 1 Galaxy ngc 5548 from Emission-Line Variability
journal, November 2013
- Peterson, B. M.; Denney, K. D.; De Rosa, G.
- The Astrophysical Journal, Vol. 779, Issue 2
Testing thermal reprocessing in active galactic nuclei accretion discs
journal, August 2007
- Cackett, Edward M.; Horne, Keith; Winkler, Hartmut
- Monthly Notices of the Royal Astronomical Society, Vol. 380, Issue 2
Swift Monitoring of NGC 4151: Evidence for a Second X-Ray/UV Reprocessing
journal, May 2017
- Edelson, R.; Gelbord, J.; Cackett, E.
- The Astrophysical Journal, Vol. 840, Issue 1
Six months of multiwavelength follow-up of the tidal disruption candidate ASASSN-14li and implied TDE rates from ASAS-SN
journal, November 2015
- Holoien, T. W. -S.; Kochanek, C. S.; Prieto, J. L.
- Monthly Notices of the Royal Astronomical Society, Vol. 455, Issue 3
Space Telescope and Optical Reverberation Mapping Project. iii. Optical Continuum Emission and Broadband time Delays in ngc 5548
journal, April 2016
- Fausnaugh, M. M.; Denney, K. D.; Barth, A. J.
- The Astrophysical Journal, Vol. 821, Issue 1
Relativistic cross sections of mass stripping and tidal disruption of a star by a super-massive rotating black hole
journal, March 2006
- Ivanov, P. B.; Chernyakova, M. A.
- Astronomy & Astrophysics, Vol. 448, Issue 3
Revisiting the Scaling Relations of Black hole Masses and host Galaxy Properties
journal, February 2013
- McConnell, Nicholas J.; Ma, Chung-Pei
- The Astrophysical Journal, Vol. 764, Issue 2
The relationship between infrared, optical, and ultraviolet extinction
journal, October 1989
- Cardelli, Jason A.; Clayton, Geoffrey C.; Mathis, John S.
- The Astrophysical Journal, Vol. 345
Spectral Energy Distributions of Hard X‐Ray Selected Active Galactic Nuclei in the XMM‐Newton Medium Deep Survey
journal, July 2007
- Polletta, M.; Tajer, M.; Maraschi, L.
- The Astrophysical Journal, Vol. 663, Issue 1
Variability of Markarian 1018 - Seyfert 1.9 to Seyfert 1
journal, December 1986
- Cohen, Ross D.; Puetter, R. C.; Rudy, Richard J.
- The Astrophysical Journal, Vol. 311
The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with
improved stray-radiation corrections
journal, September 2005
- Kalberla, P. M. W.; Burton, W. B.; Hartmann, Dap
- Astronomy & Astrophysics, Vol. 440, Issue 2
A Description of Quasar Variability Measured Using Repeated sdss and poss Imaging
journal, June 2012
- MacLeod, Chelsea L.; Ivezić, Željko; Sesar, Branimir
- The Astrophysical Journal, Vol. 753, Issue 2
The man Behind the Curtain: X-Rays Drive the uv Through nir Variability in the 2013 Active Galactic Nucleus Outburst in ngc 2617
journal, May 2014
- Shappee, B. J.; Prieto, J. L.; Grupe, D.
- The Astrophysical Journal, Vol. 788, Issue 1
The superluminous transient ASASSN-15lh as a tidal disruption event from a Kerr black hole
journal, December 2016
- Leloudas, G.; Fraser, M.; Stone, N. C.
- Nature Astronomy, Vol. 1, Issue 1
NGC 454: unveiling a new ‘changing look’ active galactic nucleus
journal, February 2012
- Marchese, E.; Braito, V.; Della Ceca, R.
- Monthly Notices of the Royal Astronomical Society, Vol. 421, Issue 2
Reverberation Measurements of the Inner Radius of the Dust Torus in Nearby Seyfert 1 Galaxies
journal, March 2006
- Suganuma, Masahiro; Yoshii, Yuzuru; Kobayashi, Yukiyasu
- The Astrophysical Journal, Vol. 639, Issue 1
An evolutionary link between Seyfert I and II galaxies?
journal, November 1984
- Penston, M. V.; Pérez, Enrique
- Monthly Notices of the Royal Astronomical Society, Vol. 211, Issue 1
Galactic Stellar and Substellar Initial Mass Function
journal, July 2003
- Chabrier, Gilles
- Publications of the Astronomical Society of the Pacific, Vol. 115, Issue 809
STELLAR MASSES AND STAR FORMATION RATES FOR 1 M GALAXIES FROM SDSS+ WISE
journal, July 2015
- Chang, Yu-Yen; Wel, Arjen van der; Cunha, Elisabete da
- The Astrophysical Journal Supplement Series, Vol. 219, Issue 1
AN ULTRA-DEEP NEAR-INFRARED SPECTRUM OF A COMPACT QUIESCENT GALAXY AT z = 2.2
journal, July 2009
- Kriek, Mariska; van Dokkum, Pieter G.; Labbé, Ivo
- The Astrophysical Journal, Vol. 700, Issue 1
Alternative diagnostic diagrams and the ‘forgotten’ population of weak line galaxies in the SDSS: The forgotten population of WLGs in the SDSS
journal, February 2010
- Cid Fernandes, R.; Stasińska, G.; Schlickmann, M. S.
- Monthly Notices of the Royal Astronomical Society, Vol. 403, Issue 2
PS16dtm: A Tidal Disruption Event in a Narrow-line Seyfert 1 Galaxy
journal, July 2017
- Blanchard, P. K.; Nicholl, M.; Berger, E.
- The Astrophysical Journal, Vol. 843, Issue 2
Variable Partial Covering and a Relativistic iron line in ngc 1365
journal, April 2009
- Risaliti, G.; Miniutti, G.; Elvis, M.
- The Astrophysical Journal, Vol. 696, Issue 1
The Eighth data Release of the Sloan Digital sky Survey: First data from Sdss-Iii
journal, March 2011
- Aihara, Hiroaki; Allende Prieto, Carlos; An, Deokkeun
- The Astrophysical Journal Supplement Series, Vol. 193, Issue 2
The Swift Gamma‐Ray Burst Mission
journal, August 2004
- Gehrels, N.; Chincarini, G.; Giommi, P.
- The Astrophysical Journal, Vol. 611, Issue 2
The bumpy light curve of Type IIn supernova iPTF13z over 3 years
journal, August 2017
- Nyholm, A.; Sollerman, J.; Taddia, F.
- Astronomy & Astrophysics, Vol. 605
Cosmic‐Ray Rejection by Laplacian Edge Detection
journal, November 2001
- van Dokkum, Pieter G.
- Publications of the Astronomical Society of the Pacific, Vol. 113, Issue 789
The lick agn Monitoring Project 2011: Spectroscopic Campaign and Emission-Line Light Curves
journal, April 2015
- Barth, Aaron J.; Bennert, Vardha N.; Canalizo, Gabriela
- The Astrophysical Journal Supplement Series, Vol. 217, Issue 2
The host galaxies and classification of active galactic nuclei
journal, November 2006
- Kewley, L. J.; Groves, B.; Kauffmann, G.
- Monthly Notices of the Royal Astronomical Society, Vol. 372, Issue 3
The Distribution of Absorbing Column Densities among Seyfert 2 Galaxies
journal, September 1999
- Risaliti, G.; Maiolino, R.; Salvati, M.
- The Astrophysical Journal, Vol. 522, Issue 1
Measuring Reddening with Sloan Digital sky Survey Stellar Spectra and Recalibrating sfd
journal, August 2011
- Schlafly, Edward F.; Finkbeiner, Douglas P.
- The Astrophysical Journal, Vol. 737, Issue 2
Rapid N H changes in NGC 4151
journal, May 2007
- Puccetti, S.; Fiore, F.; Risaliti, G.
- Monthly Notices of the Royal Astronomical Society, Vol. 377, Issue 2
Stellar population synthesis at the resolution of 2003
journal, October 2003
- Bruzual, G.; Charlot, S.
- Monthly Notices of the Royal Astronomical Society, Vol. 344, Issue 4
COSMOLOGICAL CONSTRAINTS FROM MEASUREMENTS OF TYPE Ia SUPERNOVAE DISCOVERED DURING THE FIRST 1.5 yr OF THE Pan-STARRS1 SURVEY
journal, October 2014
- Rest, A.; Scolnic, D.; Foley, R. J.
- The Astrophysical Journal, Vol. 795, Issue 1
The Complete Light-curve Sample of Spectroscopically Confirmed SNe Ia from Pan-STARRS1 and Cosmological Constraints from the Combined Pantheon Sample
journal, May 2018
- Scolnic, D. M.; Jones, D. O.; Rest, A.
- The Astrophysical Journal, Vol. 859, Issue 2
Determining Central Black Hole Masses in Distant Active Galaxies and Quasars. II. Improved Optical and UV Scaling Relationships
journal, April 2006
- Vestergaard, Marianne; Peterson, Bradley M.
- The Astrophysical Journal, Vol. 641, Issue 2
Carnegie Supernova Project: Observations of Type IIn supernovae
journal, June 2013
- Taddia, F.; Stritzinger, M. D.; Sollerman, J.
- Astronomy & Astrophysics, Vol. 555
The Tenth data Release of the Sloan Digital sky Survey: First Spectroscopic data from the Sdss-Iii Apache Point Observatory Galactic Evolution Experiment
journal, March 2014
- Ahn, Christopher P.; Alexandroff, Rachael; Allende Prieto, Carlos
- The Astrophysical Journal Supplement Series, Vol. 211, Issue 2
Optical Spectra of Supernovae
journal, September 1997
- Filippenko, Alexei V.
- Annual Review of Astronomy and Astrophysics, Vol. 35, Issue 1
Classification parameters for the emission-line spectra of extragalactic objects
journal, February 1981
- Baldwin, J. A.; Phillips, M. M.; Terlevich, R.
- Publications of the Astronomical Society of the Pacific, Vol. 93
The Swift Ultra-Violet/Optical Telescope
journal, October 2005
- Roming, Peter W. A.; Kennedy, Thomas E.; Mason, Keith O.
- Space Science Reviews, Vol. 120, Issue 3-4
Spectral Variability of Quasars in the Sloan Digital Sky Survey. I. Wavelength Dependence
journal, November 2005
- Wilhite, Brian C.; Vanden Berk, Daniel E.; Kron, Richard G.
- The Astrophysical Journal, Vol. 633, Issue 2
Theoretical Modeling of Starburst Galaxies
journal, July 2001
- Kewley, L. J.; Dopita, M. A.; Sutherland, R. S.
- The Astrophysical Journal, Vol. 556, Issue 1
Dust Emission from Active Galactic Nuclei
journal, May 2002
- Nenkova, Maia; Ivezić, Željko; Elitzur, Moshe
- The Astrophysical Journal, Vol. 570, Issue 1
DISCOVERY OF AN OUTFLOW FROM RADIO OBSERVATIONS OF THE TIDAL DISRUPTION EVENT ASASSN-14li
journal, March 2016
- Alexander, K. D.; Berger, E.; Guillochon, J.
- The Astrophysical Journal, Vol. 819, Issue 2
The 1% Concordance Hubble Constant
journal, October 2014
- Bennett, C. L.; Larson, D.; Weiland, J. L.
- The Astrophysical Journal, Vol. 794, Issue 2
Changing-look Quasar Candidates: First Results from Follow-up Spectroscopy of Highly Optically Variable Quasars
journal, March 2019
- MacLeod, Chelsea L.; Green, Paul J.; Anderson, Scott F.
- The Astrophysical Journal, Vol. 874, Issue 1
Local supermassive black holes, relics of active galactic nuclei and the X-ray background
journal, June 2004
- Marconi, A.; Risaliti, G.; Gilli, R.
- Monthly Notices of the Royal Astronomical Society, Vol. 351, Issue 1
Long-term optical variability properties of the Palomar-Green quasars
journal, July 1999
- Giveon, Uriel; Maoz, Dan; Kaspi, Shai
- Monthly Notices of the Royal Astronomical Society, Vol. 306, Issue 3
The Low-Luminosity end of the Radius-Luminosity Relationship for Active Galactic Nuclei
journal, April 2013
- Bentz, Misty C.; Denney, Kelly D.; Grier, Catherine J.
- The Astrophysical Journal, Vol. 767, Issue 2
Accretion and star formation rates in low-redshift type II active galactic nuclei
journal, November 2009
- Netzer, Hagai
- Monthly Notices of the Royal Astronomical Society, Vol. 399, Issue 4
Energetic eruptions leading to a peculiar hydrogen-rich explosion of a massive star
journal, November 2017
- Arcavi, Iair; Howell, D. Andrew; Kasen, Daniel
- Nature, Vol. 551, Issue 7679
Swift x-ray telescope (XRT)
conference, March 2003
- Burrows, David N.; Hill, Joanne E.; Nousek, John A.
- Astronomical Telescopes and Instrumentation, SPIE Proceedings
Are the Variations in Quasar Optical flux Driven by Thermal Fluctuations?
journal, May 2009
- Kelly, Brandon C.; Bechtold, Jill; Siemiginowska, Aneta
- The Astrophysical Journal, Vol. 698, Issue 1
The Extremes of AGN Variability
journal, September 2016
- Komossa, S.; Grupe, D.; Schartel, N.
- Proceedings of the International Astronomical Union, Vol. 12, Issue S324
A radio jet from the optical and x-ray bright stellar tidal disruption flare ASASSN-14li
journal, November 2015
- van Velzen, S.; Anderson, G. E.; Stone, N. C.
- Science, Vol. 351, Issue 6268
Possible power source of Seyfert galaxies and QSOs
journal, March 1975
- Hills, J. G.
- Nature, Vol. 254, Issue 5498
THE Pan-STARRS1 PHOTOMETRIC SYSTEM
journal, April 2012
- Tonry, J. L.; Stubbs, C. W.; Lykke, K. R.
- The Astrophysical Journal, Vol. 750, Issue 2
ASCA Observations of Seyfert 1 Galaxies. I. Data Analysis, Imaging, and Timing
journal, February 1997
- Nandra, K.; George, I. M.; Mushotzky, R. F.
- The Astrophysical Journal, Vol. 476, Issue 1
THE ULTRAVIOLET-BRIGHT, SLOWLY DECLINING TRANSIENT PS1-11af AS A PARTIAL TIDAL DISRUPTION EVENT
journal, December 2013
- Chornock, R.; Berger, E.; Gezari, S.
- The Astrophysical Journal, Vol. 780, Issue 1
HOW COMPLEX IS THE OBSCURATION IN ACTIVE GALACTIC NUCLEI? NEW CLUES FROM THE SUZAKU MONITORING OF THE X-RAY ABSORBERS IN NGC 7582
journal, April 2009
- Bianchi, Stefano; Piconcelli, Enrico; Chiaberge, Marco
- The Astrophysical Journal, Vol. 695, Issue 1
The SAURON project--V. Integral-field emission-line kinematics of 48 elliptical and lenticular galaxies
journal, March 2006
- Sarzi, M.; Falcon-Barroso, J.; Davies, R. L.
- Monthly Notices of the Royal Astronomical Society, Vol. 366, Issue 4
A CONTINUUM OF H- TO He-RICH TIDAL DISRUPTION CANDIDATES WITH A PREFERENCE FOR E+A GALAXIES
journal, September 2014
- Arcavi, Iair; Gal-Yam, Avishay; Sullivan, Mark
- The Astrophysical Journal, Vol. 793, Issue 1
Coevolution (Or Not) of Supermassive Black Holes and Host Galaxies
journal, August 2013
- Kormendy, John; Ho, Luis C.
- Annual Review of Astronomy and Astrophysics, Vol. 51, Issue 1
Evolution of broad-line emission from active galactic nuclei
journal, January 2014
- Elitzur, Moshe; Ho, Luis C.; Trump, Jonathan R.
- Monthly Notices of the Royal Astronomical Society, Vol. 438, Issue 4
Optical Discovery of Probable Stellar Tidal Disruption Flares
journal, October 2011
- van Velzen, Sjoert; Farrar, Glennys R.; Gezari, Suvi
- The Astrophysical Journal, Vol. 741, Issue 2
The Quasar Accretion disk Size-Black hole mass Relation
journal, March 2010
- Morgan, Christopher W.; Kochanek, C. S.; Morgan, Nicholas D.
- The Astrophysical Journal, Vol. 712, Issue 2
iPTF Discovery of the Rapid “Turn-on” of a Luminous Quasar
journal, January 2017
- Gezari, S.; Hung, T.; Cenko, S. B.
- The Astrophysical Journal, Vol. 835, Issue 2
Present‐Day Growth of Black Holes and Bulges: The Sloan Digital Sky Survey Perspective
journal, September 2004
- Heckman, Timothy M.; Kauffmann, Guinevere; Brinchmann, Jarle
- The Astrophysical Journal, Vol. 613, Issue 1
Double-peaked broad line emission from the LINER nucleus of NGC 1097
journal, June 1993
- Storchi-Bergmann, Thaisa; Baldwin, Jack A.; Wilson, Andrew S.
- The Astrophysical Journal, Vol. 410
Composite Quasar Spectra from the Sloan Digital Sky Survey
journal, August 2001
- Vanden Berk, Daniel E.; Richards, Gordon T.; Bauer, Amanda
- The Astronomical Journal, Vol. 122, Issue 2
Changing look: from Compton-thick to Compton-thin, or the rebirth of fossil active galactic nuclei
journal, June 2003
- Matt, G.; Guainazzi, M.; Maiolino, R.
- Monthly Notices of the Royal Astronomical Society, Vol. 342, Issue 2
An ultraviolet–optical flare from the tidal disruption of a helium-rich stellar core
journal, May 2012
- Gezari, S.; Chornock, R.; Rest, A.
- Nature, Vol. 485, Issue 7397
ASASSN-14ae: a tidal disruption event at 200 Mpc
journal, October 2014
- Holoien, T. W. -S.; Prieto, J. L.; Bersier, D.
- Monthly Notices of the Royal Astronomical Society, Vol. 445, Issue 3
The Ohio State Multi-Object Spectrograph
journal, February 2011
- Martini, Paul; Stoll, Rebecca; Derwent, M. A.
- Publications of the Astronomical Society of the Pacific, Vol. 123, Issue 900
Transient Superstrong Coronal Lines and Broad Bumps in the Galaxy sdss J074820.67+471214.3
journal, October 2011
- Wang, Ting-Gui; Zhou, Hong-Yan; Wang, Li-Fan
- The Astrophysical Journal, Vol. 740, Issue 2
2D stellar population and gas kinematics of the inner kiloparsec of the post-starburst quasar SDSS J0330−0532
journal, July 2014
- Sanmartim, David; Storchi-Bergmann, Thaisa; Brotherton, Michael S.
- Monthly Notices of the Royal Astronomical Society, Vol. 443, Issue 1
The curtain remains open: NGC 2617 continues in a high state
journal, January 2017
- Oknyansky, V. L.; Gaskell, C. M.; Huseynov, N. A.
- Monthly Notices of the Royal Astronomical Society
The 'Seyfert 1' optical spectra of the type II supernovae 1987F and 1988I
journal, March 1989
- Filippenko, Alexei V.
- The Astronomical Journal, Vol. 97
On the Unification of Active Galactic Nuclei
journal, February 2012
- Elitzur, Moshe
- The Astrophysical Journal, Vol. 747, Issue 2
Massive perturbers in the galactic center
journal, December 2006
- Perets, Hagai B.; Hopman, Clovis; Alexander, Tal
- Journal of Physics: Conference Series, Vol. 54
Now you see it, now you don't: the disappearing central engine of the quasar J1011+5442
journal, November 2015
- Runnoe, Jessie C.; Cales, Sabrina; Ruan, John J.
- Monthly Notices of the Royal Astronomical Society, Vol. 455, Issue 2
Elliptical accretion disks in active galactic nuclei
journal, January 1995
- Eracleous, Michael; Livio, Mario; Halpern, Jules P.
- The Astrophysical Journal, Vol. 438
ASASSN-15lh: A highly super-luminous supernova
journal, January 2016
- Dong, S.; Shappee, B. J.; Prieto, J. L.
- Science, Vol. 351, Issue 6270
Reverberation Measurements of the Inner Radius of the dust Torus in 17 Seyfert Galaxies
journal, June 2014
- Koshida, Shintaro; Minezaki, Takeo; Yoshii, Yuzuru
- The Astrophysical Journal, Vol. 788, Issue 2
Updating quasar bolometric luminosity corrections - II. Infrared bolometric corrections: Infrared bolometric corrections
journal, October 2012
- Runnoe, Jessie C.; Brotherton, Michael S.; Shang, Zhaohui
- Monthly Notices of the Royal Astronomical Society, Vol. 426, Issue 4
Tidal disruption of stars by black holes of 106–108 solar masses in nearby galaxies
journal, June 1988
- Rees, Martin J.
- Nature, Vol. 333, Issue 6173