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A hot and fast ultra-stripped supernova that likely formed a compact neutron star binary.

De, K, Kasliwal, MM, Ofek, EO, Moriya, TJ, Burke, J, Cao, Y, Cenko, SB, Doran, GB, Duggan, GE, Fender, RP, Fransson, C, Gal-Yam, A, Horesh, A, Kulkarni, SR, Laher, RR, Lunnan, R, Manulis, I, Masci, F, Mazzali, PA, Nugent, PE , Perley, DA, Petrushevska, T, Piro, AL, Rumsey, C, Sollerman, J, Sullivan, M and Taddia, F (2018) A hot and fast ultra-stripped supernova that likely formed a compact neutron star binary. Science, 362 (6411). pp. 201-206. ISSN 0036-8075

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Abstract

Compact neutron star binary systems are produced from binary massive stars through stellar evolution involving up to two supernova explosions. The final stages in the formation of these systems have not been directly observed. We report the discovery of iPTF 14gqr (SN 2014ft), a type Ic supernova with a fast-evolving light curve indicating an extremely low ejecta mass (≈0.2 solar masses) and low kinetic energy (≈2 × 1050 ergs). Early photometry and spectroscopy reveal evidence of shock cooling of an extended helium-rich envelope, likely ejected in an intense pre-explosion mass-loss episode of the progenitor. Taken together, we interpret iPTF 14gqr as evidence for ultra-stripped supernovae that form neutron stars in compact binary systems.

Item Type: Article
Uncontrolled Keywords: MD Multidisciplinary
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Astrophysics Research Institute
Publisher: American Association for the Advancement of Science
Related URLs:
Date Deposited: 17 Oct 2018 08:23
Last Modified: 18 Oct 2018 14:12
DOI or Identification number: 10.1126/science.aas8693
URI: http://researchonline.ljmu.ac.uk/id/eprint/9491

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