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Title:A hot and fast ultra-stripped supernova that likely formed a compact neutron star binary
Authors:Petrushevska, Tanja (Author)
et al.
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Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
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.
Keywords:supernova, neutron stars, gravitational waves
Year of publishing:2018
Number of pages:201-206
Numbering:362, 6411
COBISS_ID:5242619  Link is opened in a new window
DOI:10.1126/science.aas8693 Link is opened in a new window
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Publisher:American Association for the Advancement of Science
Year of publishing:2018