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Wave-driven Mass Loss of Stripped Envelope Massive Stars: Progenitor-dependence, Mass Ejection, and Supernovae

Leung, Shing-Chi and Wu, Samantha and Fuller, Jim (2021) Wave-driven Mass Loss of Stripped Envelope Massive Stars: Progenitor-dependence, Mass Ejection, and Supernovae. Astrophysical Journal, 923 (1). Art. No. 41. ISSN 0004-637X. doi:10.3847/1538-4357/ac2c63.

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The discovery of rapidly rising and fading supernovae powered by circumstellar interaction has suggested the pre-supernova mass eruption phase as a critical phenomenon in massive star evolution. It is important to understand the mass and radial extent of the circumstellar medium (CSM) from theoretically predicted mass ejection mechanisms. In this work, we study the wave heating process in massive hydrogen-poor stars, running a suite of stellar models in order to predict the wave energy and pre-explosion timescale of surface energy deposition. We survey stellar models with main-sequence progenitor masses from 20–70 M_⊙ and metallicity from 0.002–0.02. Most of these models predict that less than ∼10⁴⁷ erg is deposited in the envelope, with the majority of the energy deposited in the last week of stellar evolution. This translates to CSM masses less than ∼10⁻² M_⊙ that extend to less than ∼10¹⁴ cm, too small to greatly impact the light curves or spectra of the subsequent supernovae, except perhaps during the shock breakout phase. However, a few models predict somewhat higher wave energy fluxes, for which we perform hydrodynamical simulations of the mass ejection process. Radiative transfer simulations of the subsequent supernovae predict a bright but brief shock-cooling phase that could be detected in some Type Ib/c supernovae if they are discovered within a couple days of explosion.

Item Type:Article
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URLURL TypeDescription Paper run files
Leung, Shing-Chi0000-0002-4972-3803
Wu, Samantha0000-0003-2872-5153
Fuller, Jim0000-0002-4544-0750
Additional Information:© 2021. The American Astronomical Society. Received 2021 September 17; revised 2021 September 30; accepted 2021 October 1; published 2021 December 9. S.C.L. thanks the MESA development community for making the code open-sourced and V. Morozova and collaborators in providing the SNEC code open source. S.C.L. and J.F. acknowledges support by NASA grants HST-AR-15021.001-A and 80NSSC18K1017. S.W. is supported by the National Science Foundation Graduate Research Fellowship Program. Software: MESA (Paxton et al. 2011, 2013, 2015, 2018, 2019) version 8118; SNEC (Bersten et al. 2011, 2013; Morozova et al. 2015) version 1.01; Python libraries: Matplotlib (Hunter 2007), Pandas (Reback et al. 2021), NumPy (Harris et al. 2020). MESA run files are uploaded to Zenodo via the link
Group:Astronomy Department, TAPIR
Funding AgencyGrant Number
NASA Hubble FellowshipHST-AR-15021.001-A
NSF Graduate Research FellowshipUNSPECIFIED
Subject Keywords:Supernovae; Radiative transfer; Light curves; Stellar pulsations; Late stellar evolution
Issue or Number:1
Classification Code:Unified Astronomy Thesaurus concepts: Supernovae (1668); Radiative transfer (1335); Light curves (918); Stellar pulsations (1625); Late stellar evolution (911)
Record Number:CaltechAUTHORS:20211209-456453000
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Official Citation:Shing-Chi Leung et al 2021 ApJ 923 41
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:112328
Deposited By: George Porter
Deposited On:10 Dec 2021 19:56
Last Modified:10 Dec 2021 19:56

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