SDSS J0159 as an outlier in the Mbh-sigma space: further clues to support a central tidal disruption event?

Abstract

In this Letter, properties of black hole (BH) mass are well checked for the interesting object SDSS J0159, a changing-look AGN and also a host galaxy of a tidal disruption event (TDE). Through spectral absorption features, the stellar velocity dispersion of SDSS J0159 can be well measured as $\sigma \sim 81km/s$, leading to SDSS J0159 being an apparent outlier in the \msig space, because of the BH mass estimated through the \msig relation about two magnitudes lower than the reported virial BH mass of about $10^8{\mathrm{M}}_{\odot }$. After considerations of contributions of stellar debris from the central TDE to broad line emission clouds, the over-estimated virial BH mass could be well explained in SDSS J0159. Therefore, over-estimated virial BH masses through broad line properties in the \msig space could be treated as interesting clues to support central TDEs.

5 pages, three figures, accepted to be published in MNRAS Letter

References in corpus (7)

• An ultraviolet-optical flare from the tidal disruption of a helium-rich stellar core
• The Discovery of the First "Changing Look" Quasar: New Insights into the Physics & Phenomenology of AGN
• A New Sample of Low-mass Black Holes in Active Galaxies
• The black hole mass - stellar velocity dispersion relation of narrow-line Seyfert 1 galaxies
• Cosmic Evolution of Black Holes and Spheroids. I: The M_BH-sigma Relation at z=0.36
• The Black Hole Mass Scale of Classical and Pseudo Bulges in Active Galaxies
• Overmassive black holes in the $M_{\mathrm{BH}}-\sigma$ diagram do not belong to over (dry) merged galaxies

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• Systematic research of low redshift optically selected SDSS Type-2 AGN but with apparent long-term optical variabilities from Catalina Sky Survey, I: data sample and basic results
• Long-term variability of the composite galaxy SDSS J103911-000057: A candidate of true Type-2 AGN
• Velocity offset between emission and absorption lines might be an effective indicator of dual core system
• The Quasar 3C 47: Extreme Population B Jetted Source With Double-peaked Profile
• X-ray Unveiling Events in a z~1.6 Active Galactic Nucleus in the 7 Ms Chandra Deep Field-South
• Ultradense Gases beyond Dusty Torus in a Partially Obscured Quasar