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

The Astrophysical Journal Letters American Astronomical Society 943:2 (2023) L15-L15

Authors:

Qinan Wang, Patrick Armstrong, Yossef Zenati, Ryan Ridden-Harper, Armin Rest, Iair Arcavi, Charles D Kilpatrick, Ryan J Foley, Brad E Tucker, Chris Lidman, Thomas L Killestein, Melissa Shahbandeh, Joseph P Anderson, Rodrigo Angulo, Chris Ashall, Jamison Burke, Ting-Wan Chen, Sophie von Coelln, Kyle A Dalrymple, Kyle W Davis, Michael D Fulton, Lluís Galbany, Estefania Padilla Gonzalez, Bore Gao, Mariusz Gromadzki, D Andrew Howell, Nada Ihanec, Jacob E Jencson, David O Jones, Joseph D Lyman, Curtis McCully, Tomás E Müller-Bravo, Megan Newsome, Matt Nicholl, David O’Neill, Craig Pellegrino, Sofia Rest, Stephen J Smartt, Ken Smith, Shubham Srivastav, Giacomo Terreran, Samaporn Tinyanont, David R Young, Alfredo Zenteno

Abstract:

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.
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Day-timescale variability in the radio light curve of the Tidal Disruption Event AT2022cmc: confirmation of a highly relativistic outflow

(2023)

Authors:

L Rhodes, JS Bright, R Fender, I Sfaradi, DA Green, A Horesh, K Mooley, D Pasham, S Smartt, DJ Titterington, AJ van der Horst, DRA Williams
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Core-collapse supernovae in the Dark Energy Survey: luminosity functions and host galaxy demographics

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 520:1 (2023) 684-701

Authors:

M Grayling, CP Gutiérrez, M Sullivan, P Wiseman, M Vincenzi, L Galbany, A Möller, D Brout, TM Davis, C Frohmaier, O Graur, L Kelsey, C Lidman, B Popovic, M Smith, M Toy, BE Tucker, Z Zontos, TMC Abbott, M Aguena, S Allam, F Andrade-Oliveira, J Annis, J Asorey, D Bacon, E Bertin, S Bocquet, D Brooks, A Carnero Rosell, D Carollo, M Carrasco Kind, J Carretero, M Costanzi, LN da Costa, MES Pereira, J De Vicente, S Desai, HT Diehl, P Doel, S Everett, I Ferrero, D Friedel, J Frieman, J García-Bellido, M Gatti, D Gruen, J Gschwend, G Gutierrez, SR Hinton, DL Hollowood, K Honscheid, DJ James, K Kuehn, N Kuropatkin, GF Lewis, U Malik, M March, F Menanteau, R Miquel, R Morgan, RLC Ogando, A Palmese, F Paz-Chinchón, A Pieres, AA Plazas Malagón, M Rodriguez-Monroy, AK Romer, A Roodman, E Sanchez, V Scarpine, I Sevilla-Noarbe, E Suchyta, G Tarle, C To, DL Tucker, TN Varga, DES Collaboration
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The coordinated radio and infrared survey for high-mass star formation – V. The CORNISH-South survey and catalogue

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 520:1 (2023) 1073-1091

Authors:

T Irabor, MG Hoare, M Burton, WD Cotton, P Diamond, S Dougherty, SP Ellingsen, R Fender, GA Fuller, S Garrington, PF Goldsmith, J Green, AG Gunn, J Jackson, S Kurtz, SL Lumsden, J Marti, I McDonald, S Molinari, TJ Moore, M Mutale, T Muxlow, T O’Brien, RD Oudmaijer, R Paladini, JD Pandian, JM Paredes, AMS Richards, A Sanchez-Monge, R Spencer, MA Thompson, G Umana, JS Urquhart, M Wieringa, A Zijlstra
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The optical light curve of GRB 221009A: the afterglow and the emerging supernova

(2023)

Authors:

MD Fulton, SJ Smartt, L Rhodes, ME Huber, AV Villar, T Moore, S Srivastav, ASB Schultz, KC Chambers, L Izzo, J Hjorth, T-W Chen, M Nicholl, RJ Foley, A Rest, KW Smith, DR Young, SA Sim, J Bright, Y Zenati, T de Boer, J Bulger, J Fairlamb, H Gao, C-C Lin, T Lowe, EA Magnier, IA Smith, R Wainscoat, DA Coulter, DO Jones, CD Kilpatrick, P McGill, E Ramirez-Ruiz, K-S Lee, G Narayan, V Ramakrishnan, R Ridden-Harper, A Singh, Q Wang, AKH Kong, C-C Ngeow, Y-C Pan, S Yang, KW Davis, AL Piro, C Rojas-Bravo, J Sommer, SK Yadavalli
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