Giant outbursts of clumpy material preceding Type II supernova 2024qiw

Abstract

Observations of core-collapse supernovae suggest that some massive stars undergo intense mass loss shortly before explosion, but the underlying mechanisms remain unknown. Here we report evidence of giant outbursts of clumpy material from a massive star in the final decades before explosion. Photometric, spectroscopic, and polarimetric data of SN~2024qiw reveal a bumpy light curve, a broad H$\alpha$ profile, and variable polarization, all consistent with interaction between SN ejecta and clumpy circumstellar material, implying a mass-loss rate of $\gtrsim 10^{-2}$ M${}_{\odot }$ yr${}^{-1}$. Taken together, the most likely explanation is multiple major eruptions, similar to those of Luminous Blue Variables (LBVs), but occurring shortly before explosion. This challenges standard stellar evolution theory by requiring either that LBVs explode terminally, or that other evolutionary phases produce eruptive episodes. In spite of very high pre-SN mass loss, the resulting SN is of Type~II, rather than Type IIn, highlighting diverse and previously unrecognized late-stage mass-loss processes.

7 pages, 6 figures, submitted to A&A Letters

References in corpus (40)

• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• ATLAS: A High-Cadence All-Sky Survey System
• Mass Loss: Its Effect on the Evolution and Fate of High-Mass Stars
• Supernova Light Curves Powered by Young Magnetars
• WISeREP - An Interactive Supernova Data Repository
• 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
• Wave-Driven Mass Loss in the Last Year of Stellar Evolution: Setting the Stage for the Most Luminous Core-Collapse Supernovae
• Design and operation of the ATLAS Transient Science Server
• The Distance to SN 1999em in NGC 1637 from the Expanding Photosphere Method
• The Unprecedented 2012 Outburst of SN 2009ip: A Luminous Blue Variable Becomes a True Supernova
• The Remarkable Deaths of 9 - 11 Solar Mass Stars
• On the progenitor of SN 2005gl and the nature of Type IIn supernovae
• The Distance to SN 1999em from the Expanding Photosphere Method
• Supernova Light Curves Powered by Fallback Accretion
• Luminous Blue Variable eruptions and related transients: Diversity of progenitors and outburst properties
• Flash Spectroscopy: Emission Lines from the Ionized Circumstellar Material around $<10$-Day-Old Type II Supernovae
• Discovery of Precursor LBV Outbursts in Two Recent Optical Transients: The Fitfully Variable Missing Links UGC 2773-OT and SN 2009ip
• Common Envelope Evolution Leading to Supernovae with Dense Interaction
• Pre-Supernova Outbursts via Wave Heating in Massive Stars I: Red Supergiants
• Interacting Supernovae: Types IIn and Ibn
• Luminous Blue Variables as the progenitors of supernovae with quasi-periodic radio modulations
• A large fraction of hydrogen-rich supernova progenitors experience elevated mass loss shortly prior to explosion
• The delay of shock breakout due to circumstellar material seen in most Type II Supernovae
• An Analytic Bolometric Light Curve Model of Interaction-Powered Supernovae and its Application to Type IIn Supernovae
• Polarimetry of the Type Ia Supernova SN 1996X
• UBVRIz Light Curves of 51 Type II Supernovae
• Turbulent Cells in Stars: I. Fluctuations in Kinetic Energy and Luminosity
• Radii and Mass-loss Rates of Type IIb Supernova Progenitors
• Two stripped envelope supernovae with circumstellar interaction -- but only one really shows it
• The Candidate Progenitor of the Type IIn SN 2010jl is Not an Optically Luminous Star
• Super-luminous Type II supernovae powered by magnetars
• Triggering Eruptive Mass Ejection in Luminous Blue Variables
• Unveiling the Nature of SN 2011fh: a Young and Massive Star Gives Rise to a Luminous SN 2009ip-like Event
• The nebular spectra of SN 2023ixf: A lower mass, partially stripped progenitor may be the result of binary interaction
• Luminous Blue Variables
• The bright long-lived Type II SN 2021irp powered by aspherical circumstellar material interaction (I): Revealing the energy source with photometry and spectroscopy
• Observational diversity of bright long-lived Type II supernovae
• The bright long-lived Type II SN 2021irp powered by aspherical circumstellar material interaction (II): Estimating the CSM mass and geometry with polarimetry and light curve modeling
• ASASSN-13dn: A Luminous and Double-Peaked Type II Supernova