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

Abstract

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 which is calculated self-consistently until an ultra-stripped iron core collapse. We apply the \texttt{MESA} code starting from a post-common envelope binary consisting of a $1.35M_{\odot }$ NS and a $3.20M_{\odot }$ zero-age main-sequence helium star and continue the modelling via Case~BB Roche-lobe overflow until the infall velocity of the collapsing iron core exceeds $1000{\mathrm{km}\mathrm{s}}^{-1}$. The exploding star has a total mass of $\sim 1.90M_{\odot }$, consisting of a $\sim 0.29M_{\odot }$ He-rich envelope embedding a CO core of $\sim 1.61M_{\odot }$ and an iron-rich core of $\sim 1.50M_{\odot }$. The resulting second-born NS has an estimated mass of $\sim 1.44M_{\odot }$ 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.

8 pages, 5 figures, ApJL in press

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Cited by in corpus (16)

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• From 3D hydrodynamic simulations of common-envelope interaction to gravitational-wave mergers
• Evolution and final fate of massive post-common-envelope binaries
• On the energy source of ultra-stripped supernovae
• Mass-transferring binary stars as progenitors of interacting hydrogen-free supernovae
• From spherical stars to disk-like structures: 3D common-envelope evolution of massive binaries beyond inspiral
• A pulsar-helium star compact binary system formed by common envelope evolution
• New constraints on the kinematic, relativistic and evolutionary properties of the PSR J1757$-$1854 double neutron star system
• Simulations of the progenitors of black hole-neutron star gravitational wave sources
• The first minutes of a binary-driven hypernova
• Compact Objects in close orbits as Gravitational Wave Sources: Formation Scenarios and Properties
• Stable Case BB/BC Mass Transfer to Form GW190425-like Massive Binary Neutron Star Mergers
• The Formation of Electron-capture Supernovae: A Review
• Formation of millisecond pulsar-helium star binaries
• Forming Double Neutron Stars using Detailed Binary Evolution Models with POSYDON: Comparison to the Galactic Systems
• A method for statistical research on binary stars using radial velocities