Revealing the Progenitor of SN 2021zby through Analysis of the TESS Shock-cooling Light Curve

Wang, Qinan and Armstrong, Patrick and Zenati, Yossef and Ridden-Harper, Ryan and Rest, Armin and Arcavi, Iair and Kilpatrick, Charles D. and Foley, Ryan J. and Tucker, Brad E. and Lidman, Chris and Killestein, Thomas L. and Shahbandeh, Melissa and Anderson, Joseph P and Angulo, Rodrigo and Ashall, Chris and Burke, Jamison and Chen, Ting-Wan and von Coelln, Sophie and Dalrymple, Kyle A. and Davis, Kyle W. and Fulton, Michael D. and Galbany, Lluís and Gonzalez, Estefania Padilla and Gao, Bore and Gromadzki, Mariusz and Howell, D. Andrew and Ihanec, Nada and Jencson, Jacob E. and Jones, David O. and Lyman, Joseph D. and McCully, Curtis and Müller-Bravo, Tomás E. and Newsome, Megan and Nicholl, Matt and O’Neill, David and Pellegrino, Craig and Rest, Sofia and Smartt, Stephen J. and Smith, Ken and Srivastav, Shubham and Terreran, Giacomo and Tinyanont, Samaporn and Young, David R. and Zenteno, Alfredo (2023) Revealing the Progenitor of SN 2021zby through Analysis of the TESS Shock-cooling Light Curve. The Astrophysical Journal Letters, 943 (2). L15. ISSN 2041-8205

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Abstract

We present early observations and analysis of the double-peaked Type IIb supernova (SN IIb) SN 2021zby. TESS captured the prominent early shock-cooling peak of SN 2021zby within the first ∼10 days after explosion with a 30 minute cadence. We present optical and near-infrared spectral series of SN 2021zby, including three spectra during the shock-cooling phase. Using a multiband model fit, we find that the inferred properties of its progenitor are consistent with a red supergiant or yellow supergiant, with an envelope mass of ∼0.30–0.65 M⊙ and an envelope radius of ∼120–300 R⊙. These inferred progenitor properties are similar to those of other SNe IIb with a double-peaked feature, such as SNe 1993J, 2011dh, 2016gkg, and 2017jgh. This study further validates the importance of the high cadence and early coverage in resolving the shape of the shock-cooling light curve, while the multiband observations, particularly UV, are also necessary to fully constrain the progenitor properties.

Item Type: Article
Subjects: South Archive > Physics and Astronomy
Depositing User: Unnamed user with email support@southarchive.com
Date Deposited: 18 Apr 2023 07:05
Last Modified: 31 Jul 2024 13:40
URI: http://ebooks.eprintrepositoryarticle.com/id/eprint/556

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