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The theory of binary evolution predicts that many massive stars should lose their hydrogen-rich envelopes via interaction with a companion -- revealing hot helium stars with masses of $\sim$2--8M$_{\odot}$. However, only one candidate…

Solar and Stellar Astrophysics · Physics 2023-07-04 M. R. Drout , Y. Götberg , B. A. Ludwig , J. H. Groh , S. E. de Mink , A. J. G. O'Grady , N. Smith

Appreciable star formation, and, therefore, numerous massive stars, are frequently found near supermassive black holes (SMBHs). As a result, core-collapse supernovae in these regions should also be expected. In this paper, we consider the…

High Energy Astrophysical Phenomena · Physics 2016-01-20 Alex Rimoldi , Elena Maria Rossi , Elisa Costantini , Simon Portegies Zwart

Black hole-neutron star mergers resulting in the disruption of the neutron star and the formation of an accretion disk and/or the ejection of unbound material are prime candidates for the joint detection of gravitational-wave and…

The occurrence of a desert between neutron star (NS) and black hole (BH) remnants is reviewed. The dependence of stellar remnants on the zero age main sequence (ZAMS) progenitor mass for solar metallicity is taken from a recent…

Solar and Stellar Astrophysics · Physics 2019-01-08 R. Caimmi

Galaxies with stellar bulges are generically observed to host supermassive black holes (SMBHs). The hierarchical merging of galaxies should therefore lead to the formation of SMBH binaries. Merging of old massive galaxies with little gas…

Astrophysics · Physics 2008-11-26 Loren Hoffman , Abraham Loeb

We present the results of the stellar feedback from Pop III binaries by employing improved, more realistic Pop III evolutionary stellar models. To facilitate a meaningful comparison, we consider a fixed mass of 60 solar masses (Msun)…

Astrophysics of Galaxies · Physics 2015-06-22 Ke-Jung Chen , Volker Bromm , Alexander Heger , Myoungwon Jeon , Stan Woosley

(abridged) We report the results of SPH calculations of parabolic collisions between a subgiant or slightly evolved red-giant star and a neutron star (NS). Such collisions are likely to form ultracompact X-ray binaries (UCXBs) observed…

Astrophysics · Physics 2009-11-13 J. C. Lombardi , Z. F. Proulx , K. L. Dooley , E. M. Theriault , N. Ivanova , F. A. Rasio

We study the compact binary population in star clusters, focusing on binaries containing black holes, using a self-consistent Monte Carlo treatment of dynamics and full stellar evolution. We find that the black holes experience strong mass…

Solar and Stellar Astrophysics · Physics 2011-04-07 J. M. B. Downing , M. J. Benacquista , M. Giersz , R. Spurzem

The discovery of a binary comprising a black hole (BH) and a millisecond pulsar (MSP) would yield insights into stellar evolution and facilitate exquisitely sensitive tests of general relativity. Globular clusters (GCs) are known to harbor…

High Energy Astrophysical Phenomena · Physics 2015-06-19 Drew Clausen , Steinn Sigurdsson , David F. Chernoff

We have performed population synthesis calculation on the formation of binaries containing a black hole (BH) and a neutron star (NS) in the Galactic disk. Some of important input parameters, especially for the treatment of common envelope…

High Energy Astrophysical Phenomena · Physics 2018-05-02 Yong Shao , Xiang-Dong Li

Massive black hole (MBH) binaries, formed as a result of galaxy mergers, are expected to harden by dynamical friction and three-body stellar scatterings, until emission of gravitational waves (GWs) leads to their final coalescence.…

Astrophysics of Galaxies · Physics 2018-04-04 Elisa Bortolas , Alessia Gualandris , Massimo Dotti , Justin I. Read

Knowledge of the formation of neutron stars (NSs) in supernova (SN) explosions is of fundamental importance in wide areas of contemporary astrophysics: X-ray binaries, magnetars, radio pulsars, and, not least, double NS systems which merge…

High Energy Astrophysical Phenomena · Physics 2024-01-25 Claudia Larsen , Hans C. G. Larsen , Casper C. Pedersen , Peter N. Thomsen , Jonatan Tøffner-Clausen , Thomas M. Tauris

In this paper, the second in a series of two, we justify two important assumptions on which the result is based that in course of a galaxy merger the slingshot ejection of bound stars is sufficiently efficient to allow a supermassive black…

Astrophysics · Physics 2008-11-26 Christian Zier

In this paper, we show that the supernova remnant (SNR) masses cumulated from core-collapse supernovae along the star formation history of two powerful z=3.8 radio galaxies 4C41.17 and TN J2007-1316 reach up to > 10^9 Msun, comparable with…

Astrophysics of Galaxies · Physics 2015-06-24 Brigitte Rocca-Volmerange , Guillaume Drouart , Carlos De Breuck

The fate of the binary neutron star (NS) merger remnants hinges sensitively upon the NS equation of state and the threshold mass, $M_{\rm ls}$, that separates a long-lived from a short-lived NS remnant. The nature of the electromagnetic…

High Energy Astrophysical Phenomena · Physics 2025-02-20 Rosalba Perna , Ore Gottlieb , Estuti Shukla , David Radice

The 11 Mpc H-alpha and Ultraviolet Galaxy (11HUGS) Survey traces the star formation activity of nearby galaxies. In addition within this volume the detection completeness of core-collapse supernovae (CCSNe) is high therefore by comparing…

Astrophysics of Galaxies · Physics 2015-08-06 Lin Xiao , J. J. Eldridge

Very wide binaries (> 500 AU) are subject to numerous encounters with flying-by stars in the Galactic field and can be perturbated into highly eccentric orbits (e ~ 0.99). For such systems tidal interactions at close pericenter passages can…

High Energy Astrophysical Phenomena · Physics 2017-04-11 Jakub Klencki , Grzegorz Wiktorowicz , Wojciech Gładysz , Krzysztof Belczynski

We perform a numerical-relativity simulation for the merger of binary neutron stars with 6 nuclear-theory-based equations of state (EOSs) described by piecewise polytropes. Our purpose is to explore the dependence of the dynamical behavior…

High Energy Astrophysical Phenomena · Physics 2011-06-13 Kenta Hotokezaka , Koutarou Kyutoku , Hirotada Okawa , Masaru Shibata , Kenta Kiuchi

We investigate how the multiplicity of binary, triple and quadruple star systems changes as the systems evolve from the zero-age main-sequence to the Hubble time. We find the change in multiplicity fractions over time for each data set,…

Solar and Stellar Astrophysics · Physics 2024-12-19 Holly P. Preece , A. Vigna-Gómez , A. S. Rajamuthukumar , P. Vynatheya , J. Klencki

Because the majority of massive stars are born as members of close binary systems, populations of massive main-sequence stars contain stellar mergers and products of binary mass transfer. We simulate populations of massive stars accounting…

Solar and Stellar Astrophysics · Physics 2015-06-18 S. E. de Mink , H. Sana , N. Langer , R. G. Izzard , F. R. N. Schneider
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