Massive stars exploding in a He-rich circumstellar medium. XI. Diverse evolution of five Ibn SNe 2020nxt, 2020taz, 2021bbv, 2023utc and 2024aej

Abstract

We present the photometric and spectroscopic analysis of five Type Ibn supernovae (SNe): SN 2020nxt, SN 2020taz, SN 2021bbv, SN 2023utc, and SN 2024aej. These events share key observational features and belong to a family of objects similar to the prototypical Type Ibn SN 2006jc. The SNe exhibit rise times of approximately 10 days and peak absolute magnitudes ranging from $-$16.5 to $-$19 mag. Notably, SN 2023utc is the faintest Type Ibn supernova discovered to date, with an exceptionally low r-band absolute magnitude of $-16.4$ mag. The pseudo-bolometric light curves peak at $(1-10)\times 10^{42}$ erg s${}^{-1}$, with total radiated energies on the order of $(1-10)\times 10^{48}$ erg. Spectroscopically, these SNe display relatively slow spectral evolution; the early spectra are characterised by a hot blue continuum and prominent He I emission lines. Early spectra show blackbody temperatures exceeding $10000\mathrm{K}$, with a subsequent decline in temperature during later phases. Narrow He I lines, indicative of unshocked circumstellar material (CSM), show velocities of approximately $1000\mathrm{km}{\mathrm{s}}^{-1}$. The spectra suggest that the progenitors of these SNe underwent significant mass loss prior to the explosion, resulting in a He-rich CSM. Light curve modelling yields estimates for the ejecta mass ($M_{\mathrm{ej}}$) in the range $1-3M_{\odot }$, with kinetic energies ($E_{\mathrm{Kin}}$) of $(0.1-1)\times 10^{50}$ erg. The inferred CSM mass ranges from $0.2$ to $1M_{\odot }$. These findings are consistent with expectations for core-collapse events arising from relatively massive, envelope-stripped progenitors.

54 pages, 53 figures, Accepted for publication in Astronomy & Astrophysics

References in corpus (96)

• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• The Origin of the Mass--Metallicity Relation: Insights from 53,000 Star-Forming Galaxies in the SDSS
• dynesty: A Dynamic Nested Sampling Package for Estimating Bayesian Posteriors and Evidences
• How Massive Single Stars End their Life
• The Zwicky Transient Facility: System Overview, Performance, and First Results
• The Man Behind the Curtain: X-rays Drive the UV through NIR Variability in the 2013 AGN Outburst in NGC 2617
• ATLAS: A High-Cadence All-Sky Survey System
• Las Cumbres Observatory Global Telescope Network
• The All-Sky Automated Survey for Supernovae (ASAS-SN) Light Curve Server v1.0
• Pre-Supernova Evolution of Massive Single and Binary Stars
• Nearby Supernova Rates from the Lick Observatory Supernova Search. II. The Observed Luminosity Functions and Fractions of Supernovae in a Complete Sample
• WISeREP - An Interactive Supernova Data Repository
• Pulsational Pair-Instability Supernovae
• The chemical make-up of the Sun: A 2020 vision
• The Pan-STARRS1 Database and Data Products
• An Empirical Relation between Sodium Absorption and Dust Extinction
• A giant outburst two years before the core-collapse of a massive star
• Design and operation of the ATLAS Transient Science Server
• A faint type of supernova from a white dwarf with a helium-rich companion
• SN 2006jc: A Wolf-Rayet Star Exploding in a Dense He-Rich Circumstellar Medium
• Pan-STARRS Photometric and Astrometric Calibration
• Oxygen and nitrogen abundances in nearby galaxies. Correlations between oxygen abundance and macroscopic properties
• The Eighteenth Data Release of the Sloan Digital Sky Surveys: Targeting and First Spectra from SDSS-V
• The Zwicky Transient Facility Bright Transient Survey. II. A Public Statistical Sample for Exploring Supernova Demographics
• The magnetar model for Type I superluminous supernovae I: Bayesian analysis of the full multicolour light curve sample with MOSFiT
• The Evolution of Massive Helium Stars Including Mass Loss
• MOSFiT: Modular Open-Source Fitter for Transients
• The Unique Type Ib Supernova 2005bf at Nebular Phases: A Possible Birth Event of A Strongly Magnetized Neutron Star
• Massive stars exploding in a He-rich circumstellar medium. I. Type Ibn (SN 2006jc-like) events
• The Automatic Learning for the Rapid Classification of Events (ALeRCE) Alert Broker
• Dust Formation and He II 4686 emission in the Dense Shell of the Peculiar Type Ib Supernova 2006jc
• A low energy core-collapse supernova without a hydrogen envelope
• Multi-wavelength Observations of the Enduring Type IIn Supernovae 2005ip and 2006jd
• Interacting Supernovae: Types IIn and Ibn
• Observational and Physical Classification of Supernovae
• The Pan-STARRS Data Processing System
• Pan-STARRS Pixel Processing: Detrending, Warping, Stacking
• Variety in Supernovae
• Rapidly Decaying Supernova 2010X: A Candidate ".Ia" Explosion
• Fallback Supernovae: A Possible Origin of Peculiar Supernovae with Extremely Low Explosion Energies
• An Unusually Fast-Evolving Supernova
• Type Ibn Supernovae Show Photometric Homogeneity and Spectral Diversity at Maximum Light
• Massive stars exploding in a He-rich circumstellar medium III. SN 2006jc: IR echoes from new and old dust in the progenitor CSM
• Pan-STARRS Pixel Analysis : Source Detection and Characterization
• Bright, months-long stellar outbursts announce the explosion of interaction-powered supernovae
• On Absorption by Circumstellar Dust, With the Progenitor of SN2012aw as a Case Study
• Massive stars exploding in a He-rich circumstellar medium. II. The transitional case of SN 2005la
• Swift and Chandra Detections of Supernova 2006jc: Evidence for Interaction of the Supernova Shock with a Circumstellar Shell
• Reconstructing Functions and Estimating Parameters with Artificial Neural Networks: A Test with the Hubble Parameter and SNe Ia
• Massive stars exploding in a He-rich circumstellar medium. IV. Transitional Type Ibn Supernovae
• Metallicity at the explosion sites of interacting transients
• Theoretical Models of Optical Transients. I. A Broad Exploration of the Duration-Luminosity Phase Space
• Massive stars exploding in a He-rich circumstellar medium - IX. SN 2014av, and characterization of Type Ibn SNe
• SN 2011hw: Helium-Rich Circumstellar Gas and the Luminous Blue Variable to Wolf-Rayet Transition in Supernova Progenitors
• PS1-12sk is a Peculiar Supernova From a He-rich Progenitor System in a Brightest Cluster Galaxy Environment
• Properties of Type Ibn Supernovae: Implications for the Progenitor Evolution and the Origin of a Population of Rapid Transients
• Circumstellar interaction in type Ibn supernovae and SN 2006jc
• SN 2015U: A Rapidly Evolving and Luminous Type Ibn Supernova
• Circumstellar Interaction Powers the Light Curves of Luminous Rapidly Evolving Optical Transients
• Origins of Type Ibn SNe 2006jc/2015G in interacting binaries and implications for pre-SN eruptions
• An Emerging Class of Bright, Fast-evolving Supernovae with Low-mass Ejecta
• Massive stars exploding in a He-rich circumstellar medium. V. Observations of the slow-evolving SN Ibn OGLE-2012-SN-006
• Model Light Curves for Type Ib and Ic Supernovae
• The possible detection of a binary companion to a Type Ibn supernova progenitor
• Massive stars exploding in a He-rich circumstellar medium. VI. Observations of two distant Type Ibn supernova candidates discovered by La Silla-QUEST
• Optical photometry and spectroscopy of the type Ibn supernova SN 2006jc until the onset of dust formation
• A radio-detected Type Ia supernova with helium-rich circumstellar material
• Helium stars exploding in circumstellar material and the origin of Type Ibn supernovae
• Optical to X-ray Signatures of Dense Circumstellar Interaction in Core-Collapse Supernovae
• iPTF13beo: The Double-Peaked Light Curve of a Type Ibn Supernova Discovered Shortly after Explosion
• Near-Infrared observations of the type Ib Supernova SN2006jc: evidence of interactions with dust
• Flash ionization signatures in the type Ibn supernova SN 2019uo
• ECoPANN: A Framework for Estimating Cosmological Parameters using Artificial Neural Networks
• The luminous and rapidly evolving SN 2018bcc: Clues toward the origin of Type Ibn SNe from the Zwicky Transient Facility
• Massive stars exploding in a He-rich circumstellar medium - VII. The metamorphosis of ASASSN-15ed from a narrow line Type Ibn to a normal Type Ib Supernova
• OGLE-2014-SN-131: A long-rising Type Ibn supernova from a massive progenitor
• New solar metallicity measurements
• SN 2018gjx reveals that some SNe Ibn are SNe IIb exploding in dense circumstellar material
• Massive stars exploding in a He-rich circumstellar medium - VIII. PSN J07285387+3349106, a highly reddened supernova Ibn
• Progenitor, environment, and modelling of the interacting transient, AT 2016jbu (Gaia16cfr)
• SN 2020bqj: a Type Ibn supernova with a long lasting peak plateau
• Errors When Constraining Hot Blackbody Parameters with Optical Photometry
• Spectroscopic observations of progenitor activity 100 days before a Type Ibn supernova
• SN 2021foa, a transitional event between a Type IIn (SN 2009ip-like) and a Type Ibn supernova
• The Highly Luminous Type Ibn Supernova ASASSN-14ms
• Merger Precursor: Year-long Transients Preceding Mergers of Low-mass Stripped Stars with Compact Objects
• Exploring the Energy Sources Powering the Light Curve of the Type Ibn Supernova PS15dpn and the Mass-Loss History of the SN Progenitor
• The Type Ibn Supernova 2019kbj -- Indications for Diversity in Type Ibn Supernova Progenitors
• Evolution of A Peculiar Type Ibn Supernova SN 2019wep
• Multi-wavelength View of the Type IIn Zoo: Optical to X-ray Emission Model of Interaction-Powered Supernovae
• Optical and UV Spectra of the Remnant of SN 1885 (S And) in M31
• Time varying Na I D absorption in ILRTs as a probe of circumstellar material
• ASASSN-14ms:the Most Energetic Known Explosion of a Type Ibn Supernova and its Physical Origin
• Massive stars exploding in a He-rich circumstellar medium $-$ X. Flash spectral features in the Type Ibn SN 2019cj and observations of SN 2018jmt
• Insights into the Properties of Type Ibn/Icn Supernovae and Their Progenitor Channels through X-ray Emission

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