Far-Ultraviolet to Near-Infrared Observations of SN 2023ixf: A high energy explosion engulfed in complex circumstellar material

Abstract

We present early-phase panchromatic photometric and spectroscopic coverage spanning far-ultraviolet (FUV) to the near-infrared (NIR) regime of the nearest hydrogen-rich core-collapse supernova in the last 25 years, SN 2023ixf. We observe early 'flash' features in the optical spectra due to a confined dense circumstellar material (CSM). We observe high-ionization absorption lines (FeII, MgII) in the ultraviolet spectra from very early on. We also observe a multi-peaked emission profile of H-alpha in the spectrum beginning ~16 d, which indicates ongoing interaction of the SN ejecta with a pre-existing shell-shaped CSM having an inner radius of ~75 AU and an outer radius of ~140 AU. The shell-shaped CSM is likely a result of enhanced mass loss ~35-65 years before the explosion assuming a standard Red-Supergiant wind. The UV spectra are dominated by multiple highly ionized narrow absorption features and broad emission features from elements such as C, N, O, Si, Fe, and Ni. Based on early light curve models of Type II SNe, we infer that the nearby dense CSM confined to (7+-3)e14cm (~45 AU) is a result of enhanced mass loss (10^{-3.0+-0.5} Msol/yr) two decades before the explosion.

Accepted for publication in ApJL (Revised, 3 figures and 1 table)

References in corpus (32)

• Array Programming with NumPy
• K-corrections and filter transformations in the ultraviolet, optical, and near infrared
• Confined Dense Circumstellar Material Surrounding a Regular Type II Supernova: The Unique Flash-Spectroscopy Event of SN 2013fs
• Characterizing the V-band light-curves of hydrogen-rich type II supernovae
• A Wolf-Rayet-like progenitor of supernova SN 2013cu from spectral observations of a wind
• Photometric and Spectroscopic Properties of Type II-P Supernovae
• A large fraction of hydrogen-rich supernova progenitors experience elevated mass loss shortly prior to explosion
• Type II supernova spectral diversity I: Observations, sample characterization and spectral line evolution
• Additional Calibration of the Ultra-Violet Imaging Telescope on board AstroSat
• Final Moments I: Precursor Emission, Envelope Inflation, and Enhanced Mass loss Preceding the Luminous Type II Supernova 2020tlf
• Cluster Cepheids with High Precision Gaia Parallaxes, Low Zeropoint Uncertainties, and Hubble Space Telescope Photometry
• Supernova 2013by: A Type IIL Supernova with a IIP-like light curve drop
• SN2023ixf in Messier 101: A Variable Red Supergiant as the Progenitor Candidate to a Type II Supernova
• The prevalence and influence of circumstellar material around hydrogen-rich supernova progenitors
• Ultraviolet Spectroscopy of Supernovae: The First Two Years of Swift Observations
• A Diversity of Wave-driven Pre-supernova Outbursts
• The Type II-P Supernova 2017eaw: from explosion to the nebular phase
• A Luminous Red Supergiant and Dusty Long-period Variable Progenitor for SN 2023ixf
• Shock Cooling and Possible Precursor Emission in the Early Light Curve of the Type II SN 2023ixf
• Modeling the signatures of interaction in Type II supernovae: UV emission, high-velocity features, broad-boxy profiles
• The Early Phases of Supernova 2020pni: Shock-Ionization of the Nitrogen-Enriched Circumstellar Material
• Superluminous supernovae: an explosive decade
• Millimeter Observations of the Type II SN2023ixf: Constraints on the Proximate Circumstellar Medium
• SN 2020jfo: A short plateau Type II supernova from a low mass progenitor
• Synthetic red supergiant explosion model grid for systematic characterization of Type II supernovae
• GALEX Spectroscopy of SN 2005ay suggests a UV spectral uniformity among type II-P supernovae
• SN 2022acko: the First Early Far-Ultraviolet Spectra of a Type IIP Supernova
• The Transition of a Type IIL Supernova into a Supernova Remnant: Late-time Observations of SN 2013by
• Eruption of the Envelope of Massive Stars by Energy Injection with Finite Duration
• Deep Narrowband Photometry of the M101 Group: Strong-Line Abundances of 720 HII Regions
• Calibration of AstroSat/UVIT Gratings and Spectral Responses
• Using LSST late-time photometry to constrain Type Ibc supernovae and their progenitors

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