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SN2018fif: The explosion of a large red supergiant discovered in its infancy by the Zwicky Transient Facility

Soumagnac, Maayane T. and Ganot, Noam and Gal-Yam, Avishay and Ofek, Eran O. and Yaron, Ofer and Waxman, Eli and Schulze, Steve and Yang, Yi and Rubin, Adam and Cenko, S. Bradley and Sollerman, Jesper and Perley, Daniel A. and Fremling, Christoffer and Nugent, Peter E. and Neill, James D. and Karamehmetoglu, Emir and Bellm, Eric C. and Bruch, Rachel J. and Burruss, Rick and Cunningham, Virginia and Dekany, Richard and Golkhou, V. Zach and Irani, Ido and Kasliwal, Mansi M. and Konidaris, Nicholas P. and Kulkarni, Shrinivas R. and Kupfer, Thomas and Laher, Russ R. and Masci, Frank J. and Morag, Jonathan and Riddle, Reed and Rigault, Mickael and Rusholme, Ben and van Roestel, Jan and Zackay, Barak (2019) SN2018fif: The explosion of a large red supergiant discovered in its infancy by the Zwicky Transient Facility. . (Submitted)

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High cadence transient surveys are able to capture supernovae closer to their first light than before. Applying analytical models to such early emission, we can constrain the progenitor stars properties. In this paper, we present observations of SN2018fif (ZTF18abokyfk). The supernova was discovered close to first light and monitored by the Zwicky Transient Facility (ZTF) and the Neil Gehrels Swift Observatory. Early spectroscopic observations suggest that the progenitor of SN2018fif was surrounded by relatively small amounts of circumstellar material (CSM) compared to all previous cases. This particularity, coupled with the high cadence multiple-band coverage, makes it a good candidate to investigate using shock-cooling models. We employ the SOPRANOS code, an implementation of the model by Sapir & Waxman (2017). Compared with previous implementations, SOPRANOS has the advantage of including a careful account of the limited temporal validity domain of the shock-cooling model. We find that the progenitor of SN2018fif was a large red supergiant, with a radius of R=1174_{-81}^{+208} solar radii, and an ejected mass of M=5.6_{-1.0}^{+9.1} solar masses. Our model also gives information on the explosion epoch, the progenitor inner structure, the shock velocity and the extinction. The large radius differs from previously modeled objects, and the difference could be either intrinsic or due to the relatively small amount of CSM around SN2018fif, perhaps making it a "cleaner" candidate for applying shock-cooling analytical models.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Soumagnac, Maayane T.0000-0001-6753-1488
Gal-Yam, Avishay0000-0002-3653-5598
Ofek, Eran O.0000-0002-6786-8774
Yaron, Ofer0000-0002-0301-8017
Waxman, Eli0000-0002-9038-5877
Schulze, Steve0000-0001-6797-1889
Rubin, Adam0000-0003-4557-0632
Cenko, S. Bradley0000-0003-1673-970X
Sollerman, Jesper0000-0003-1546-6615
Perley, Daniel A.0000-0001-8472-1996
Fremling, Christoffer0000-0002-4223-103X
Nugent, Peter E.0000-0002-3389-0586
Neill, James D.0000-0002-0466-1119
Karamehmetoglu, Emir0000-0001-6209-838X
Bellm, Eric C.0000-0001-8018-5348
Cunningham, Virginia0000-0003-2292-0441
Golkhou, V. Zach0000-0001-8205-2506
Irani, Ido0000-0002-7996-8780
Kasliwal, Mansi M.0000-0002-5619-4938
Konidaris, Nicholas P.0000-0003-1905-2815
Kulkarni, Shrinivas R.0000-0001-5390-8563
Kupfer, Thomas0000-0002-6540-1484
Laher, Russ R.0000-0003-2451-5482
Masci, Frank J.0000-0002-8532-9395
Riddle, Reed0000-0002-0387-370X
Rigault, Mickael0000-0002-8121-2560
Rusholme, Ben0000-0001-7648-4142
van Roestel, Jan0000-0002-2626-2872
Additional Information:We dedicate this paper to the memory of Rona Ramon. M.T.S. acknowledges support by a grant from IMOS/ISA, the Ilan Ramon fellowship from the Israel Ministry of Science and Technology and the Benoziyo center for Astrophysics at the Weizmann Institute of Science. E.O.O is grateful for the support by grants from the Israel Science Foundation, Minerva, Israeli Ministry of Science, the US-Israel Binational Science Foundation, the Weizmann Institute and the I-CORE Program of the Planning and Budgeting Committee and the Israel Science Foundation. A.G.-Y. is supported by the EU via ERC grant No. 725161, the Quantum Universe I-Core program, the ISF, the BSF Transformative program, IMOS via ISA and by a Kimmel award. The data presented here are based - in part - on observations obtained with the Samuel Oschin Telescope 48-inch and the 60-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. We acknowledge the use of public data from the Swift data archive. SED Machine is based upon work supported by the National Science Foundation under Grant No. 1106171 The data presented here were obtained - in part - with ALFOSC, which is provided by the Instituto de Astrofisica de Andalucia (IAA) under a joint agreement with the University of Copenhagen and NOTSA.The Liverpool Telescope, located on the island of La Palma in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias, is operated by Liverpool John Moores University with financial support from the UK Science and Technology Facilities Council.The ACAM spectroscopy was obtained as part of OPT/2018B/011.
Group:Zwicky Transient Facility, Infrared Processing and Analysis Center (IPAC), Astronomy Department
Funding AgencyGrant Number
Ministry of Science (Israel)UNSPECIFIED
Benoziyo Center for AstrophysicsUNSPECIFIED
Israel Science FoundationUNSPECIFIED
Binational Science Foundation (USA-Israel)UNSPECIFIED
Weizmann Institute of ScienceUNSPECIFIED
I-CORE Program of the Planning and Budgeting CommitteeUNSPECIFIED
European Research Council (ERC)725161
Science and Technology Facilities Council (STFC)UNSPECIFIED
Record Number:CaltechAUTHORS:20190802-110819439
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97618
Deposited By: Joy Painter
Deposited On:02 Aug 2019 18:25
Last Modified:09 Mar 2020 13:19

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