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A Diversity of Wave-driven Presupernova Outbursts

Wu, Samantha and Fuller, Jim (2021) A Diversity of Wave-driven Presupernova Outbursts. Astrophysical Journal, 906 (1). Art. No. 3. ISSN 1538-4357.

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Many core-collapse supernova (SN) progenitors show indications of enhanced pre-SN mass loss and outbursts, some of which could be powered by wave energy transport within the progenitor star. Depending on the star's structure, convectively excited waves driven by late-stage nuclear burning can carry substantial energy from the core to the envelope, where the wave energy is dissipated as heat. We examine the process of wave energy transport in single-star SNe progenitors with masses between 11 and 50 M_⊙. Using MESA stellar evolution simulations, we evolve stars until core collapse and calculate the wave power produced and transmitted to the stars' envelopes. These models improve upon prior efforts by incorporating a more realistic wave spectrum and nonlinear damping effects, reducing our wave-heating estimates by ~1 order of magnitude compared to prior work. We find that waves excited during oxygen/neon burning typically transmit ~10⁴⁶–10⁴⁷ erg of energy at 0.1–10 yr before core collapse in typical (M < 30 M_⊙) SN progenitors. High-mass progenitors can often transmit ~10⁴⁷–10⁴⁸ erg of energy during oxygen/neon burning, but this tends to occur later, at about 0.01–0.1 yr before core collapse. Pre-SN outbursts may be most pronounced in low-mass SN progenitors (M ≾ 12 M_⊙) undergoing semidegenerate neon ignition and in high-mass progenitors (M ≳ 30 M_⊙) exhibiting convective shell mergers.

Item Type:Article
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URLURL TypeDescription Paper
Wu, Samantha0000-0003-2872-5153
Fuller, Jim0000-0002-4544-0750
Alternate Title:A Diversity of Wave-driven Pre-supernova Outbursts
Additional Information:© 2020 The American Astronomical Society. Received 2020 October 6; revised 2020 November 4; accepted 2020 November 5; published 2020 December 29. This work was partially supported by NASA grants HST-AR-15021.001-A and 80NSSC18K1017. J.F. acknowledges support from an Innovator Grant from The Rose Hills Foundation, and the Sloan Foundation through grant FG-2018-10515.
Group:Astronomy Department
Funding AgencyGrant Number
NASA Hubble FellowshipHST-AR-15021.001-A
Rose Hills FoundationUNSPECIFIED
Alfred P. Sloan FoundationFG-2018-10515
Subject Keywords:Circumstellar matter ; Massive stars ; Stellar mass loss ; Stellar oscillations ; Supernovae
Issue or Number:1
Classification Code:Unified Astronomy Thesaurus concepts: Circumstellar matter (241); Massive stars (732); Stellar mass loss (1613); Stellar oscillations (1617); Supernovae (1668)
Record Number:CaltechAUTHORS:20210106-102309010
Persistent URL:
Official Citation:Samantha Wu and Jim Fuller 2021 ApJ 906 3
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107337
Deposited By: George Porter
Deposited On:06 Jan 2021 22:31
Last Modified:08 Jan 2021 18:03

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