A long life of excess: The interacting transient SN 2017hcc

Abstract

In this study we present the results of a five-year follow-up campaign of the long-lived type IIn supernova SN 2017hcc, found in a spiral dwarf host of near-solar metallicity. The long rise time (57 $\pm$ 2 days, ATLAS $o$ band) and high luminosity (peaking at $-$20.78 $\pm$ 0.01 mag in the ATLAS $o$ band) point towards an interaction of massive ejecta with massive and dense circumstellar material (CSM). The evolution of SN 2017hcc is slow, both spectroscopically and photometrically, reminiscent of the long-lived type IIn, SN 2010jl. An infrared (IR) excess was apparent soon after the peak, and blueshifts were noticeable in the Balmer lines starting from a few hundred days, but appeared to be fading by around +1200 days. We posit that an IR light echo from pre-existing dust dominates at early times, with some possible condensation of new dust grains occurring at epochs >$\sim$+800 days.

arXiv commentAccepted to A&A

References in corpus (67)

• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• The Swift X-ray Telescope
• The Zwicky Transient Facility: System Overview, Performance, and First Results
• The Swift Ultra-Violet/Optical Telescope
• In the Realm of the Hubble tension $-$ a Review of Solutions
• The Man Behind the Curtain: X-rays Drive the UV through NIR Variability in the 2013 AGN Outburst in NGC 2617
• [O III]/[N II] as an Abundance Indicator at High Redshift
• ATLAS: A High-Cadence All-Sky Survey System
• The All-Sky Automated Survey for Supernovae (ASAS-SN) Light Curve Server v1.0
• Preliminary Results from NEOWISE: An Enhancement to the Wide-field Infrared Survey Explorer for Solar System Science
• The Carnegie-Chicago Hubble Program. VIII. An Independent Determination of the Hubble Constant Based on the Tip of the Red Giant Branch
• Nearby Supernova Rates from the Lick Observatory Supernova Search. II. The Observed Luminosity Functions and Fractions of Supernovae in a Complete Sample
• Supernova Light Curves Powered by Young Magnetars
• Calibration of X-ray absorption in our Galaxy
• Initial Performance of the NEOWISE Reactivation Mission
• Line formation in solar granulation: IV. [O I], OI and OH lines and the photospheric O abundance
• An Empirical Relation between Sodium Absorption and Dust Extinction
• PESSTO : survey description and products from the first data release by the Public ESO Spectroscopic Survey of Transient Objects
• Design and operation of the ATLAS Transient Science Server
• Generalized Semi-Analytical Models of Supernova Light Curves
• Pan-STARRS Photometric and Astrometric Calibration
• The death of massive stars - II. Observational constraints on the progenitors of type Ibc supernovae
• Caltech Core-Collapse Project (CCCP) observations of type IIn supernovae: typical properties and implications for their progenitor stars
• Evidence for Asphericity in the Type IIn Supernova 1998S
• Supernova Light Curves Powered by Fallback Accretion
• High Density Circumstellar Interaction in the Luminous Type IIn SN 2010jl: The first 1100 days
• Analytical Light Curve Models of Super-Luminous Supernovae: chi^2-Minimizations of Parameter Fits
• SOUSA: the Swift Optical/Ultraviolet Supernova Archive
• Optical and Infrared Spectroscopy of the type IIn SN 1998S : Days 3-127
• Coronal lines and dust formation in SN 2005ip: Not the brightest, but the hottest Type IIn supernova
• Multi-wavelength Observations of the Enduring Type IIn Supernovae 2005ip and 2006jd
• Interacting Supernovae: Types IIn and Ibn
• On the source of the late-time infrared luminosity of SN 1998S and other type II supernovae
• Time Dependent Radiative Transfer Calculations for Supernovae
• Optical and Infrared photometry of the type IIn SN 1998S:Days 11-146
• Observational and Physical Classification of Supernovae
• Optical and Ultraviolet Spectroscopy of SN 1995N: Evidence for Strong Circumstellar Interaction
• SN 2010jl: Optical to hard X-ray observations reveal an explosion embedded in a ten solar mass cocoon
• Optical Spectroscopy of Supernova 1993J During Its First 2500 Days
• A Massive Progenitor of the Luminous Type IIn Supernova 2010jl
• Gaia Photometric Science Alerts
• Low-Resolution Sodium D Absorption is a Bad Proxy for Extinction
• Numerical simulations of super-luminous supernovae of type IIn
• Type IIn Supernova SN 2010jl: Optical Observations for Over 500 Days After Explosion
• Massive stars exploding in a He-rich circumstellar medium III. SN 2006jc: IR echoes from new and old dust in the progenitor CSM
• Characterising the environments of supernovae with MUSE
• SN 2010jl in UGC 5189: Yet another luminous type IIn supernova in a metal-poor galaxy
• Hubble Space Telescope and Ground-Based Observations of SN 1993J and SN 1998S: CNO Processing in the Progenitors
• Supernova rates from the SUDARE VST-Omegacam search. I
• Type IIn supernova light-curve properties measured from an untargeted survey sample
• Asymmetries in the Type IIn SN2010jl
• Evidence for Pre-Existing Dust in the Bright Type IIn SN 2010jl
• Modeling the signatures of interaction in Type II supernovae: UV emission, high-velocity features, broad-boxy profiles
• The Automated Photometry Of Transients (AutoPhOT) pipeline
• The long-lived Type IIn SN 2015da: Infrared echoes and strong interaction within an extended massive shell
• Delayed Shock-induced Dust Formation in the Dense Circumstellar Shell Surrounding the Type IIn Supernova SN 2010jl
• Optical observations of the luminous Type IIn Supernova 2010jl for over 900 days
• High-resolution spectroscopy of SN 2017hcc and its blueshifted line profiles from post-shock dust formation
• Type IIn SN~2010jl: probing dusty line-emitting shell
• Disentangling Dust Components in SN 2010jl: The First 1400 Days
• On the observational behaviour of the highly polarized Type IIn supernova SN 2017hcc
• Near infrared spectroscopy of the type IIn SN 2010jl: evidence for high velocity ejecta
• Supernova PTF12glz: a possible shock breakout driven through an aspherical wind
• A code for robust astrometric solution of astronomical images
• The luminous Type IIN supernova SN 2017hcc: Infrared bright, X-ray and radio faint
• Dust Models for the Extinction of Type IIn Supernova SN 2010jl
• HSC16aayt: Slowly evolving interacting transient rising for more than 100 days