Late-time observations of the relativistic tidal disruption flare candidate Swift J1112.2-8238

Abstract

We present late-time follow-up of the relativistic tidal disruption flare candidate Swift J1112.2-8238. We confirm the previously determined redshift of $z=0.8900\pm 0.0005$ based on multiple emission line detections. {\em HST} imaging of the host galaxy indicates a complex and distorted morphology with at least two spatially distinct components. These are offset in velocity space by less than 350\,km\,s${}^{-1}$ in VLT/X-Shooter observations, suggesting that the host is undergoing interaction with another galaxy. The transient position is consistent to 2.2$\sigma$ with the centre of a bulge-like component at a distance of 1.1$\pm$0.5\,kpc from its centre. Luminous, likely variable radio emission has also been observed, strengthening the similarities between Swift J1112.2-8238 and other previously identified relativistic tidal disruption flares. While the transient location is $\sim 2\sigma$ from the host centroid, the disrupted nature of the host may provide an explanation for this. The tidal disruption model remains a good description for these events.

arXiv comment12 pages, 6 figures, accepted for publication in MNRAS

References in corpus (73)

• The chemical composition of the Sun
• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• The Dust Content and Opacity of Actively Star-Forming Galaxies
• Coevolution (Or Not) of Supermassive Black Holes and Host Galaxies
• The Host Galaxies of AGN
• The Origin of the Mass--Metallicity Relation: Insights from 53,000 Star-Forming Galaxies in the SDSS
• The physical properties of star forming galaxies in the low redshift universe
• Correcting for the Effects of Interstellar Extinction
• Detailed Structural Decomposition of Galaxy Images
• Theoretical Modeling of Starburst Galaxies
• Detailed Decomposition of Galaxy Images. II. Beyond Axisymmetric Models
• On the Black Hole Mass - Bulge Mass Relation
• Metallicity Calibrations and the Mass-Metallicity Relation for Star-Forming Galaxies
• X-shooter, the new wide band intermediate resolution spectrograph at the ESO Very Large Telescope
• A Cosmology Calculator for the World Wide Web
• Calibrating Extinction-Free Star Formation Rate Diagnostics with 33GHz Free-Free Emission in NGC6946
• Automated data reduction workflows for astronomy
• Metallicities of 0.3<z<1.0 Galaxies in the GOODS-North Field
• Luminous Supernovae
• A relativistic jetted outburst from a massive black hole fed by a tidally disrupted star
• Discovery of the Onset of Rapid Accretion by a Dormant Massive Black Hole
• Structural Properties of Pseudo-Bulges, Classical Bulges and Elliptical Galaxies: an SDSS Perspective
• The effect of galaxy mass ratio on merger--driven starbursts
• The Birth of a Relativistic Outflow in the Unusual γ-ray Transient Swift J164449.3+573451
• [OII] as a Star Formation Rate Indicator
• The Galaxy Population Hosting Gamma-Ray Bursts
• An extremely luminous panchromatic outburst from the nucleus of a distant galaxy
• The Structure of Classical Bulges And Pseudobulges: The Link Between Pseudobulges And Sersic Index
• Six Months of Multi-Wavelength Follow-up of the Tidal Disruption Candidate ASASSN-14li and Implied TDE Rates from ASAS-SN
• Optical Star-Formation Rate Indicators
• A very luminous magnetar-powered supernova associated with an ultra-long gamma-ray burst
• A new population of ultra-long duration gamma-ray bursts
• The Cosmic BPT Diagram: Confronting Theory with Observations
• ASASSN-14ae: A Tidal Disruption Event at 200 Mpc
• Hydrogen-Poor Superluminous Supernovae and Long-Duration Gamma-Ray Bursts Have Similar Host Galaxies
• An Empirical Pixel-Based Correction for Imperfect CTE. I. HST's Advanced Camera for Surveys
• Magnetic Fields in Starburst Galaxies and The Origin of the FIR-Radio Correlation
• Spectroscopy of superluminous supernova host galaxies. A preference of hydrogen-poor events for extreme emission line galaxies
• Tidal Disruption Events Prefer Unusual Host Galaxies
• Discovery of an outflow from radio observations of the tidal disruption event ASASSN-14li
• Host-Galaxy Properties of 32 Low-Redshift Superluminous Supernovae from the Palomar Transient Factory
• The Relation between Black Hole Mass and Host Spheroid Stellar Mass out to z~2
• The Star Formation History of the Universe as Revealed by Deep Radio Observations
• A radio jet from the optical and x-ray bright stellar tidal disruption flare ASASSN-14li
• Selection and photometric properties of K+A galaxies
• ASASSN-15oi: A Rapidly Evolving, Luminous Tidal Disruption Event at 216 Mpc
• Radio Monitoring of the Tidal Disruption Event Swift J164449.3+573451. I. Jet Energetics and the Pristine Parsec-Scale Environment of a Supermassive Black Hole
• Radio transients from stellar tidal disruption by massive black holes
• Swift J1112.2-8238: A Candidate Relativistic Tidal Disruption Flare
• Discovery of superstrong, fading, iron line emission and double-peaked Balmer lines of the galaxy SDSSJ0952+2143 - the light echo of a huge flare
• Radio Monitoring of the Tidal Disruption Event Swift J164449.3+573451. II. The Relativistic Jet Shuts Off and a Transition to Forward Shock X-ray/Radio Emission
• A Catalog of Local E+A(post-starburst) Galaxies selected from the Sloan Digital Sky Survey Data Release 5
• Oxygen abundances in dwarf irregular galaxies and the metallicity - luminosity relationship
• A Hubble Space Telescope Survey of the Host Galaxies of Superluminous Supernovae
• Formation of the Galactic Millisecond Pulsar Triple System PSR J0337+1715 - a Neutron Star with Two Orbiting White Dwarfs
• Afterglow Model for the Radio Emission from the Jetted Tidal Disruption Candidate Swift J1644+57
• A Multiwavelength Study of the Relativistic Tidal Disruption Candidate Sw J2058+05 at Late Times
• PTF10iya: A short-lived, luminous flare from the nuclear region of a star-forming galaxy
• Transient Super-strong Coronal Lines and Broad Bumps in the Galaxy SDSS J074820.67+471214.3
• The Off-nuclear Starbursts In NGC 4038/4039 (The Antennae Galaxies)
• Interruption of Tidal Disruption Flares By Supermassive Black Hole Binaries
• An enhanced rate of tidal disruptions in the centrally overdense E+A galaxy NGC 3156
• Dynamical friction of massive objects in galactic centres
• Electron-capture supernovae as sources of 60Fe
• The radio afterglow of Swift J1644+57 reveals a powerful jet with fast core and slow sheath
• Constraints on off-axis jets from stellar tidal disruption flares
• Late Time Radio Emission from X-ray Selected Tidal Disruption Events
• The influence of circumnuclear environment on the radio emission from TDE jets
• A Recalibration of Strong Line Oxygen Abundance Diagnostics via the Direct Method and Implications for the High Redshift Universe
• Late time multi wavelength observations of Swift J1644+5734: A luminous optical/IR bump and quiescent X-ray emission
• E+A and Companion Galaxies - I : A Catalogue and Statistics
• Star formation in galaxy interactions and mergers
• Host Galaxy Properties and Black Hole Mass of Swift J164449.3+573451 from Multi-Wavelength Long-Term Monitoring and HST Data

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