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Constraints on the origin of the first light from SN 2014J

Goobar, A. and Kromer, M. and Siverd, R. and Stassun, K. G. and Pepper, J. and Amanullah, R. and Kasliwal, M. and Sollerman, J. and Taddia, F. (2015) Constraints on the origin of the first light from SN 2014J. Astrophysical Journal, 799 (1). Art. No. 106. ISSN 0004-637X.

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We study the very early light curve of supernova 2014J (SN 2014J) using the high-cadence broad-band imaging data obtained by the Kilodegree Extremely Little Telescope, which fortuitously observed M 82 around the time of the explosion, starting more than 2 months prior to detection, with up to 20 observations per night. These observations are complemented by observations in two narrow-band filters used in an Hα survey of nearby galaxies by the intermediate Palomar Transient Factory that also captured the first days of the brightening of the supernova. The evolution of the light curves is consistent with the expected signal from the cooling of shock heated material of large scale dimensions, ≳1 R☉. This could be due to heated material of the progenitor, a companion star or pre-existing circumstellar environment, e.g., in the form of an accretion disk. Structure seen in the light curves during the first days after explosion could also originate from radioactive material in the outer parts of an exploding white dwarf, as suggested from the early detection of gamma-rays. The model degeneracy translates into a systematic uncertainty of ±0.3 days on the estimate of the first light from SN 2014J.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Goobar, A.0000-0002-4163-4996
Stassun, K. G.0000-0002-3481-9052
Pepper, J.0000-0002-3827-8417
Amanullah, R.0000-0002-5559-9351
Kasliwal, M.0000-0002-5619-4938
Sollerman, J.0000-0003-1546-6615
Taddia, F.0000-0002-2387-6801
Alternate Title:Constraints on the origin of the first light from SN2014J
Additional Information:© 2015 The American Astronomical Society. Received 2014 October 8; accepted 2014 November 14; published 2015 January 20. A.G. and R.A. acknowledge support from the Swedish Research Council and the Swedish Space Board.
Group:Palomar Transient Factory
Funding AgencyGrant Number
Swedish Research CouncilUNSPECIFIED
Swedish National Space Board (SNSB)UNSPECIFIED
Subject Keywords:supernovae: individual (SN 2014J)
Issue or Number:1
Record Number:CaltechAUTHORS:20151204-071648290
Persistent URL:
Official Citation:A. Goobar et al 2015 ApJ 799 106
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:62594
Deposited By: Ruth Sustaita
Deposited On:04 Dec 2015 16:49
Last Modified:22 Nov 2019 00:39

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