SN 2016esw: a luminous Type II supernova observed within the first day after the explosion

Abstract

We present photometry, spectroscopy, and host-galaxy integral-field spectroscopy of the Type II supernova (SN) 2016esw in CGCG~229-009 from the first day after the explosion up to 120 days. Its light-curve shape is similar to that of a typical SN II; however, SN 2016esw is near the high-luminosity end of the SN II distribution, with a peak of $M_V^{\max }=-18.36$ mag. The $V$-band light curve exhibits a long recombination phase for a SN II (similar to the long-lived plateau of SN 2004et). Considering the well-known relation between the luminosity and the plateau decline rate, SN 2016esw should have a $V$-band slope of $\sim 2.10$ mag (100 days)${}^{-1}$; however, SN 2016esw has a substantially flatter plateau with a slope of $1.01\pm 0.26$ mag (100 days)${}^{-1}$, perhaps indicating that interacting Type II supernovae are not useful for cosmology. At 19.5 days post-explosion, the spectrum presents a boxy H$\alpha$ emission line with flat absorption profiles, suggesting interaction between the ejecta and circumstellar matter. Finally, based on the spectral properties, SN 2016esw shows similarities with the luminous and interacting SN 2007pk at early epochs, particularly in terms of observable line features and their evolution.

arXiv commentAccepted for publication in MNRAS. 19 pages, including 18 figures and 5 tables

References in corpus (80)

• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• Star Formation in Galaxies Along the Hubble Sequence
• Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant
• Progenitors of core-collapse supernovae
• The death of massive stars - I. Observational constraints on the progenitors of type II-P supernovae
• Observed and Physical Properties of Core-Collapse Supernovae
• An Open Catalog for Supernova Data
• Early supernovae light-curves following the shock-breakout
• Characterizing the V-band light-curves of hydrogen-rich type II supernovae
• Confined Dense Circumstellar Material Surrounding a Regular Type II Supernova: The Unique Flash-Spectroscopy Event of SN 2013fs
• The diversity of Type II supernova versus the similarity in their progenitors
• A Wolf-Rayet-like progenitor of supernova SN 2013cu from spectral observations of a wind
• PMAS, the Potsdam Multi-Aperture Spectrophotometer. I. Design, Manufacture, and Performance
• Berkeley Supernova Ia Program I: Observations, Data Reduction, and Spectroscopic Sample of 582 Low-Redshift Type Ia Supernovae
• The Distance to SN 1999em in NGC 1637 from the Expanding Photosphere Method
• Photometry and Spectroscopy of the Type IIP SN 1999em from Outburst to Dust Formation
• Chemical abundances in high-redshift galaxies: A powerful new emission line diagnostic
• On the Source of the Dust Extinction in Type Ia Supernovae and the Discovery of Anomalously Strong Na I Absorption
• The Distance to SN 1999em from the Expanding Photosphere Method
• Type II Supernovae as Standardized Candles
• SN 2005cs in M51 II. Complete Evolution in the Optical and the Near-Infrared
• Flash Spectroscopy: Emission Lines from the Ionized Circumstellar Material around $<10$-Day-Old Type II Supernovae
• The early UV/Optical emission from core-collapse supernovae
• Unifying Type II Supernova Light Curves with Dense Circumstellar Material
• Towards Characterization of the Type IIP Supernova Progenitor Population: a Statistical Sample of Light Curves from Pan-STARRS1
• The first month of evolution of the slow rising type II-P SN 2013ej in M74
• GRB060218: A Relativistic Supernova Shock Breakout
• Photometric and spectroscopic evolution of the type IIP supernova SN 2004et
• Integral field spectroscopy of a sample of nearby galaxies: II. Properties of the H ii regions
• Photometric and Spectroscopic Properties of Type II-P Supernovae
• Nearby Supernova Rates from the Lick Observatory Supernova Search. I. The Methods and Database
• Measuring the Progenitor Masses and Dense Circumstellar Material of Type II Supernovae
• SN 2005cs in M51 I. The first month of evolution of a subluminous SN II plateau
• The Standardized Candle Method for Type II Plateau Supernovae
• Optical and near infrared coverage of SN 2004et: physical parameters and comparison with other type IIP supernovae
• Towards a Cosmological Hubble Diagram for Type II-P Supernovae
• Variety in Supernovae
• A Sample of Type II-L Supernovae
• On The Progenitor of the Type II-Plateau Supernova 2003gd in Messier 74
• Preliminary Spectral Analysis of the Type II Supernova 1999em
• Explosion of red-supergiant stars: influence of the atmospheric structure on shock breakout and the early-time supernova radiation
• Low-Resolution Sodium D Absorption is a Bad Proxy for Extinction
• The Katzman Automatic Imaging Telescope Gamma-Ray Burst Alert System, and Observations of GRB 020813
• PISCO: The Pmas/ppak Integral-field Supernova hosts COmpilation
• The Disk Mass project; science case for a new PMAS IFU module
• UBVRIz Light Curves of 51 Type II Supernovae
• Nearby supernova host galaxies from the CALIFA Survey: I. Sample, data analysis, and correlation to star-forming regions
• Early-time spectra of supernovae and their precursor winds: the luminous blue variable/yellow hypergiant progenitor of SN 2013cu
• Supernova 2013by: A Type IIL Supernova with a IIP-like light curve drop
• Early Emission from the Type IIn Supernova 1998S at High Resolution
• The Massive Progenitor of the Type II-Linear SN 2009kr
• The Type IIP SN 2007od in UGC 12846: from a bright maximum to dust formation in the nebular phase
• H-alpha Spectral diversity of type II supernovae
• Type II supernova energetics and comparison of light curves to shock-cooling models
• Sn 2008in - bridging the gap between normal and faint supernovae of type IIP
• The bright Type IIP SN 2009bw, showing signs of interaction
• Type II-P Supernovae from the SDSS-II Supernova Survey and the Standardized Candle Method
• The effects of spatial resolution on Integral Field Spectrograph surveys at different redshifts. The CALIFA perspective
• A comparative study of Type II-P and II-L supernova rise times as exemplified by the case of LSQ13cuw
• Moderately Luminous type II Supernovae
• 450 Days of Type II SN 2013ej in Optical and Near-Infrared
• The Massive Progenitor of the Possible Type II-Linear Supernova 2009hd in Messier 66
• Asphericity, Interaction, and Dust in the Type II-P/II-L Supernova 2013ej in Messier 74
• Type II supernova spectral diversity II: Spectroscopic and photometric correlations
• Extensive Spectroscopy and Photometry of the Type IIP Supernova 2013ej
• Type II-Plateau supernovae as metallicity probes of the Universe
• Type II supernovae as probes of environment metallicity: observations of host HII regions
• Integral field spectroscopy of supernova explosion sites: constraining mass and metallicity of the progenitors -- II. Type II-P and II-L supernovae
• A Hubble diagram from Type II Supernovae based solely on photometry: the Photometric-Colour Method
• Observed Type II supernova colours from the Carnegie Supernova Project-I
• Type II Supernova Light Curves and Spectra From the CfA
• Type II-P Supernovae as Standard Candles: The SDSS-II Sample Revisited
• What drives the Balmer extinction sequence in spiral galaxies? Clues from the Sloan Digital Sky Survey
• Nearby supernova host galaxies from the CALIFA Survey: II. SN environmental metallicity
• A Type II Supernova Hubble diagram from the CSP-I, SDSS-II, and SNLS surveys
• SN 2016jhj at redshift 0.34: extending the Type II supernova Hubble diagram using the standard candle method
• Molecular gas at supernova local environments unveiled by EDGE
• The Evolution of Temperature and Bolometric Luminosity in Type-II Supernovae
• Estimating the Explosion Time of Core-Collapse Supernovae from Their Optical Light Curves
• Metallicity from Type II Supernovae from the (i)PTF

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