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Novel Model of an Ultra-stripped Supernova Progenitor of a Double Neutron Star

Jiang, Long and Tauris, Thomas M. and Chen, Wen-Cong and Fuller, Jim (2021) Novel Model of an Ultra-stripped Supernova Progenitor of a Double Neutron Star. Astrophysical Journal Letters, 920 (2). Art. No. L36. ISSN 2041-8205. doi:10.3847/2041-8213/ac2cc9.

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Recent discoveries of double neutron star (DNS) mergers and ultra-stripped supernovae (SNe) raise the questions of their origin and connection. We present the first 1D model of a DNS progenitor system that is calculated self-consistently until an ultra-stripped iron core collapse. We apply the MESA code starting from a post-common-envelope binary consisting of a 1.35 M⊙ NS and a 3.20 M⊙ zero-age main-sequence helium star and continue the modeling via Case BB Roche-lobe overflow until the infall velocity of the collapsing iron core exceeds 1000 km s⁻¹. The exploding star has a total mass of ∼1.90 M_⊙, consisting of a ∼0.29 M_⊙ He-rich envelope embedding a CO core of ∼1.61 M⊙ and an iron-rich core of ∼1.50 M_⊙. The resulting second-born NS has an estimated mass of ∼1.44 M_⊙, and we discuss the fate of the post-SN system, as well as the mild recycling of the first-born NS. Depending on the initial conditions, this family of systems is anticipated to reproduce the DNS mergers detected by the LIGO network.

Item Type:Article
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URLURL TypeDescription Paper
Jiang, Long0000-0002-2479-1295
Tauris, Thomas M.0000-0002-3865-7265
Chen, Wen-Cong0000-0002-0785-5349
Fuller, Jim0000-0002-4544-0750
Additional Information:© 2021. The American Astronomical Society. Received 2021 July 15; revised 2021 September 22; accepted 2021 October 5; published 2021 October 18. We are grateful to the anonymous reviewer for constructive comments improving our manuscript. We thank Takashi Moriya for useful discussions. This work was partly supported by the National Natural Science Foundation of China (under grant Nos. 11573016, 11803018, and 11733009) and the CAS "Light of West China" Program (grant No. 2018-XBQNXZ-B-022).
Group:TAPIR, Astronomy Department
Funding AgencyGrant Number
National Natural Science Foundation of China11573016
National Natural Science Foundation of China11803018
National Natural Science Foundation of China11733009
Chinese Academy of Sciences2018-XBQNXZ-B-022
Subject Keywords:Interacting binary stars; Neutron stars; Gravitational wave sources; X-ray binary stars; Stellar evolution
Issue or Number:2
Classification Code:Unified Astronomy Thesaurus concepts: Interacting binary stars (801); Neutron stars (1108); Gravitational wave sources (677); X-ray binary stars (1811); Stellar evolution (1599)
Record Number:CaltechAUTHORS:20211026-213222099
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Official Citation:Long Jiang et al 2021 ApJL 920 L36
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:111651
Deposited By: Tony Diaz
Deposited On:26 Oct 2021 21:43
Last Modified:26 Oct 2021 21:43

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