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We simulate mergers between star clusters embedded within their natal giant molecular cloud. We extract initial conditions from cloud-scale simulations of cluster formation and introduce different prescriptions for primordial binaries. We…

Astrophysics of Galaxies · Physics 2024-09-23 Claude Cournoyer-Cloutier , Jeremy Karam , Alison Sills , Simon Portegies Zwart , Maite Wilhelm

The expected distributions of eclipse-depth versus period for eclipsing binaries of different luminosities are derived from large-scale population synthesis experiments. Using the rapid Hurley et al. BSE binary evolution code, we have…

Astrophysics · Physics 2009-11-11 S. Soderhjelm , J. Dischler

Increased eccentricity of a black hole binary leads to reduced merger times. With n-body simulations and analytic approximations including the effects of general relativity (GR), we show that even a low mass companion orbiting a black hole…

High Energy Astrophysical Phenomena · Physics 2023-11-14 Stephen Lepp , Rebecca G. Martin , Bing Zhang

Planets are observed to orbit the component star(s) of stellar binary systems on so-called circumprimary or circumsecondary orbits, as well as around the entire binary system on so-called circumbinary orbits. Depending on the orbital…

In a globular cluster, hierarchical triple black hole systems can be produced through binary-binary interaction. It has been proposed recently that the Kozai mechanism could drive the inner binary of the triple system to merge before it is…

Astrophysics · Physics 2009-11-07 Linqing Wen

Galactic centers are very dynamically active environments, often harbouring a nuclear star cluster and supermassive black hole at their cores. Binaries in these environments are subject to strong tidal fields that can efficiently torque its…

Astrophysics of Galaxies · Physics 2024-09-19 Mila Winter-Granic , Cristobal Petrovich , Valentín Peña-Donaire , Chris Hamilton

Most exoplanetary systems in binary stars are of S--type, and consist of one or more planets orbiting a primary star with a wide binary stellar companion. Gravitational forcing of a single planet by a sufficiently inclined binary orbit can…

Earth and Planetary Astrophysics · Physics 2015-09-16 Jihad R. Touma , S. Sridhar

A self-consistent, adiabatic model for the {\it long-time} behaviour of tidal capture binaries is presented. It is shown that most capture orbits behave chaotically, with the eccentricity following a quasi-random walk between the values of…

Astrophysics · Physics 2007-05-23 Rosemary A. Mardling

We have investigated i) the formation of gravitationally bounded pairs of gas-giant planets (which we call "binary planets") from capturing each other through planet-planet dynamical tide during their close encounters and ii) the following…

Earth and Planetary Astrophysics · Physics 2015-06-22 H. Ochiai , M. Nagasawa , S. Ida

Tidal forces are important for understanding how close binary stars and compact exoplanetary systems form and evolve. However, tides are difficult to model and significant uncertainties exist about the strength of tides. Here, we…

Solar and Stellar Astrophysics · Physics 2021-05-19 Anders B. Justesen , Simon Albrecht

The formation of massive stars in close binary systems is complicated due to their high radiation pressure, the crowded environment and the expected minimum separation for fragmentation being many times greater than the orbital separation.…

Astrophysics · Physics 2007-05-23 Ian A. Bonnell

We study the steady-state orbital distributions of giant planets migrating through the combination of the Kozai-Lidov (KL) mechanism due to a stellar companion and friction due to tides raised on the planet by the host star. We run a large…

Earth and Planetary Astrophysics · Physics 2015-01-15 Cristobal Petrovich

In this study we identify 11 Kepler systems (KIC 5255552, 5653126, 5731312, 7670617, 7821010, 8023317, 10268809, 10296163, 11519226, 11558882 and 12356914) with a "flip-flop" effect in the eclipse timing variations O-C diagrams of the…

Solar and Stellar Astrophysics · Physics 2020-09-02 A. K. Getley , B. Carter , R. King , S. O'Toole

We investigate interactions of stellar binaries in galactic nuclear clusters with a massive black hole (MBH). We consider binaries on highly eccentric orbits around the MBH that change due to random gravitational interactions with other…

High Energy Astrophysical Phenomena · Physics 2017-06-21 Ben Bradnick , Ilya Mandel , Yuri Levin

Most stars form in a clustered environment. Both single and binary stars will sometimes encounter planetary systems in such crowded environments. Encounter rates for binaries may be larger than for single stars, even for binary fractions as…

Earth and Planetary Astrophysics · Physics 2020-09-30 Daohai Li , Alexander J. Mustill , Melvyn B. Davies

We model the dynamics of test binaries in isotropic, multi-mass models of galactic globular clusters. The evolution of binary orbits through the cluster potentials is modeled, including second order diffusion terms, and probabilities for…

Astrophysics · Physics 2008-11-26 Steinn Sigurdsson , E. S. Phinney

The galactic population of globular clusters are old, dense star systems, with a typical cluster containing $10^4 - 10^6$ stars. As an old population of stars, globular clusters contain many collapsed and degenerate objects. As a dense…

Astrophysics · Physics 2016-10-19 Matthew Benacquista

There is significant observational evidence that a large fraction of galactic centers, including those in the Milky Way and M31, host a supermassive black hole (SMBH) embedded in a triaxial nuclear star cluster. In this work, we study the…

High Energy Astrophysical Phenomena · Physics 2020-05-06 Mathew W. Bub , Cristobal Petrovich

Wide, fragile binary stellar systems are found in the galactic field, and have recently been noted in the outskirts of expanding star clusters in numerical simulations. Energetically soft, with semi-major axes exceeding the initial size of…

Solar and Stellar Astrophysics · Physics 2015-05-27 Nickolas Moeckel , Cathie J. Clarke

Serving as the progenitors of electromagnetic and gravitational wave transients, massive stars have received renewed interest in recent years. However, many aspects of their birth and evolution remain opaque, particularly in the context of…

Solar and Stellar Astrophysics · Physics 2023-02-22 J. S. Clark , M. E. Lohr , F. Najarro , L. R. Patrick , B. W. Ritchie
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