Discovery and Observations of the Unusually Luminous Type-Defying II-P/II-L Supernova ASASSN-13co

Holoien, TW-S, Prieto, JL, Pejcha, O, Stanek, KZ, Kochanek, CS, Shappee, BJ, Grupe, D, Morrell, N, Thorstensen, JR, Basu, U, Beacom, JF, Bersier, D, Brimacombe, J, Davis, AB, Pojmanski, G and Szczygiel, DM (2016) Discovery and Observations of the Unusually Luminous Type-Defying II-P/II-L Supernova ASASSN-13co. Acta Astronomica 66 (2016), 219, 66 (2). pp. 219-238. ISSN 0001-5237

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Abstract

We present photometric and spectroscopic observations of ASASSN-13co, an unusually luminous Type II supernova and the first core-collapse supernova discovered by the All-Sky Automated Survey for SuperNovae (ASAS-SN). First detection of the supernova was on UT 2013 August 29 and the data presented span roughly 3.5 months after discovery. We use the recently developed model from Pejcha & Prieto (2015) to model the multi-band light curves of ASASSN-13co and derive the bolometric luminosity curve. We compare ASASSN-13co to other Type II supernovae to show that it was unusually luminous for a Type II supernova and that it exhibited an atypical light curve shape that does not cleanly match that of either a standard Type II-L or Type II-P supernova.

Item Type:	Article
Uncontrolled Keywords:	0201 Astronomical And Space Sciences
Subjects:	Q Science > QB Astronomy Q Science > QC Physics
Divisions:	Astrophysics Research Institute
Publisher:	Copernicus Foundation for Polish Astronomy
Related URLs:	http://arxiv.org/abs/1411.3322v3
Date of acceptance:	1 September 2015
Date of first compliant Open Access:	30 June 2017
Date Deposited:	29 Nov 2016 11:13
Last Modified:	04 Sep 2021 04:08
URI:	https://researchonline.ljmu.ac.uk/id/eprint/4876

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