Journal article

An Early-time Optical and Ultraviolet Excess in the Type-Ic SN 2020oi

A Gagliano, L Izzo, CD Kilpatrick, B Mockler, WV Jacobson-Galán, G Terreran, G Dimitriadis, Y Zenati, K Auchettl, MR Drout, G Narayan, RJ Foley, R Margutti, A Rest, DO Jones, C Aganze, PD Aleo, AJ Burgasser, DA Coulter, R Gerasimov Show all

Astrophysical Journal | IOP Publishing Ltd | Published : 2022

Abstract

We present photometric and spectroscopic observations of Supernova 2020oi (SN 2020oi), a nearby (∼17 Mpc) type-Ic supernova (SN Ic) within the grand-design spiral M100. We undertake a comprehensive analysis to characterize the evolution of SN 2020oi and constrain its progenitor system. We detect flux in excess of the fireball rise model δ t ≈ 2.5 days from the date of explosion in multiband optical and UV photometry from the Las Cumbres Observatory and the Neil Gehrels Swift Observatory, respectively. The derived SN bolometric luminosity is consistent with an explosion with M ej = 0.81 ± 0.03 M o˙, E k = 0.79 ± 0.09 × 1051 erg s-1, and M Ni56 = 0.08 ± 0.02 M o˙. Inspection of the event's dec..

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University of Melbourne Researchers

Grants

Awarded by Horizon 2020 Framework Programme


Funding Acknowledgements

A.G. is supported by the National Science Foundation Graduate Research Fellowship Program under grant No. DGE-1746047. A.G. also acknowledges funding from the Center for Astrophysical Surveys Fellowship at UIUC/NCSA and the Illinois Distinguished Fellowship. W.J.-G. is supported by the National Science Foundation Graduate Research Fellowship Program under grant No. DGE-1842165 and the IDEAS Fellowship Program at Northwestern University. W.J.-G. acknowledges support through NASA grants in support of Hubble Space Telescope program GO-16075. Parts of this research were supported by the Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), through project number CE170100013. M.R.D. acknowledges support from the NSERC through grant RGPIN-2019-06186, the Canada Research Chairs Program, the Canadian Institute for Advanced Research (CIFAR), and the Dunlap Institute at the University of Toronto. The UCSC team is supported in part by NASA grant 80NSSC20K0953; NSF grant AST-1815935; the Gordon & Betty Moore Foundation; the Heising-Simons Foundation; and by a fellowship from the David and Lucile Packard Foundation to R.J.F. The transient group at Northwestern is partially supported by the Heising-Simons Foundation under grant #2018-0911 (PI: Margutti). R.M. acknowledges support by the National Science Foundation under Award No. AST-1909796 and AST-1944985. Support for this work was provided by the National Aeronautics and Space Administration through Chandra Award Number DD0-21114X (PI Stroh) issued by the Chandra X-ray Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of the National Aeronautics Space Administration under contract NAS8-03060. D.O.J. is supported by NASA through the NASA Hubble Fellowship grant HF2-51462.001 awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS5-26555. D.A.C. acknowledges support from the National Science Foundation Graduate Research Fellowship under grant DGE-1339067. This work was supported by a VILLUM FONDEN Young Investigator Grant to C.G. (project number 25501) and a VILLUM FONDEN Investigator grant to J.H. (project number 16599). K.S.M. acknowledges funding from the European Research Council under the European Unions Horizon 2020 research and innovation program (grant agreement No. 101002652), and from Horizon 2020, EU grant agreement No. 873089. M.R.S. is supported by the National Science Foundation Graduate Research Fellowship Program under grant No. 1842400. The scientific results reported in this article are based in part on observations made by the Chandra X-ray Observatory. This research has made use of software provided by the Chandra X-ray Center (CXC) in the application packages CIAO. Partial support for this work was provided by the National Aeronautics and Space Administration through Chandra Award Number DD0-21114X issued by the Chandra X-ray Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of the National Aeronautics Space Administration under contract NAS8-03060. The Pan-STARRS1 Surveys (PS1) and the PS1 public science archive have been made possible through contributions by the Institute for Astronomy, the University of Hawaii, the Pan-STARRS Project Office, the Max-Planck Society and its participating institutes, the Max Planck Institute for Astronomy, Heidelberg and the Max Planck Institute for Extraterrestrial Physics, Garching, The Johns Hopkins University, Durham University, the University of Edinburgh, the Queen's University Belfast, the Harvard-Smithsonian Center for Astrophysics, the Las Cumbres Observatory Global Telescope Network Incorporated, the National Central University of Taiwan, the Space Telescope Science Institute, the National Aeronautics and Space Administration under grant No. NNX08AR22G issued through the Planetary Science Division of the NASA Science Mission Directorate, the National Science Foundation grant No. AST-1238877, the University of Maryland, Eotvos Lorand University (ELTE), the Los Alamos National Laboratory, and the Gordon and Betty Moore Foundation. A major upgrade of the Kast spectrograph on the Shane 3 m telescope at Lick Observatory was made possible through generous gifts from the Heising-Simons Foundation as well as William and Marina Kast. Research at Lick Observatory is partially supported by a generous gift from Google. Some of the data presented herein were obtained at the W.M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation. Based on observations obtained with the Samuel Oschin 48 inch Telescope at the Palomar Observatory as part of the Zwicky Transient Facility project. ZTF is supported by the National Science Foundation under grant No. AST-1440341 and a collaboration including Caltech, IPAC, the Weizmann Institute for Science, the Oskar Klein Center at Stockholm University, the University of Maryland, the University of Washington, Deutsches Elektronen-Synchrotron and Humboldt University, Los Alamos National Laboratories, the TANGO Consortium of Taiwan, the University of Wisconsin at Milwaukee, and Lawrence Berkeley National Laboratories. Operations are conducted by COO, IPAC, and UW. The ZTF forced-photometry service was funded under the Heising-Simons Foundation grant #12540303 (PI: Graham).