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Recent discoveries of gravitational wave sources have advanced our knowledge about the formation of compact object binaries. At present, many questions about the stellar origins of binary neutron stars remain open. We explore the evolution…

High Energy Astrophysical Phenomena · Physics 2025-01-29 Clément Pellouin , Irina Dvorkin , Léonard Lehoucq

Binary stars have been shown to have a substantial impact on the integrated light of stellar populations, particularly at low metallicity and early ages - conditions prevalent in the distant Universe. But the fraction of stars in stellar…

Astrophysics of Galaxies · Physics 2020-05-06 E. R. Stanway , A. A. Chrimes , J. J. Eldridge , H. F. Stevance , .

This paper is the fourth one of a series whose chief objective is studying the influence of different mass spectra on the dynamical evolution of open star clusters. Results from several N-body calculations with primordial binaries and mass…

Astrophysics · Physics 2016-08-30 R. de la Fuente Marcos

Binary stars produce an array of dramatic astrophysical phenomena. They allow us to probe stellar structure, nuclear physics, and gravitational wave physics. They also produce the powerful supernovae that allow us to measure the scale of…

Solar and Stellar Astrophysics · Physics 2011-09-20 Kaitlin M. Kratter

Binary stars are as common as single stars. Binary stars are of immense importance to astrophysicists because that they allow us to determine the masses of the stars independent of their distances. They are the cornerstone of the…

Solar and Stellar Astrophysics · Physics 2023-11-21 Xuefei Chen , Zhengwei Liu , Zhanwen Han

Open and globular star clusters have served as benchmarks for the study of stellar evolution due to their supposed nature as simple stellar populations of the same age and metallicity. After a brief review of some of the pioneering work…

Astrophysics of Galaxies · Physics 2015-05-14 Jason S. Kalirai , Harvey B. Richer

Observations found that star clusters contain a large fraction of binaries. Tight binaries are an important heating source that influences the long-term dynamical evolution of star clusters. However, due to the limitation of $N$-body tool,…

Astrophysics of Galaxies · Physics 2021-11-12 Long Wang , Ataru Tanikawa , Michiko S. Fujii

We investigate the formation and early evolution of star clusters assuming that they form from a turbulent starless clump of given mass bounded inside a parent self-gravitating molecular cloud characterized by a particular mass surface…

Astrophysics of Galaxies · Physics 2017-04-05 Juan P. Farias , Jonathan C. Tan , Sourav Chatterjee

Most stars form in highly clustered environments within molecular clouds, but eventually disperse into the distributed stellar field population. Exactly how the stellar distribution evolves from the embedded stage into gas-free associations…

Astrophysics of Galaxies · Physics 2023-09-21 Juan P. Farias , Stella S. R. Offner , Michael Y. Grudić , Dávid Guszejnov , Anna L. Rosen

The majority of stars in the Galactic field and halo are part of binary or multiple systems. A significant fraction of these systems have orbital separations in excess of thousands of astronomical units, and systems wider than a parsec have…

Astrophysics of Galaxies · Physics 2015-05-14 M. B. N. Kouwenhoven , S. P. Goodwin , Richard J. Parker , M. B. Davies , D. Malmberg , P. Kroupa

Most globular clusters (GCs) show evidence for multiple stellar populations, suggesting the occurrence of several distinct star-formation episodes. The large fraction of second population (2P) stars observed requires a very large 2P gaseous…

High Energy Astrophysical Phenomena · Physics 2022-06-15 Mor Rozner , Hagai B. Perets

It has now been known for over a decade that low-mass stars located in star-forming regions are very frequently members of binary and multiple systems, even more so than main sequence stars in the solar neighborhood. This high multiplicity…

Astrophysics · Physics 2007-05-23 G. Duchene , E. Delgado-Donate , K. Haisch , L. Loinard , L. Rodriguez

Significant progress has been made toward understanding the formation of massive ($M > 8~$M$_{\odot}$) binaries in close orbits. For example, the detection of a very low velocity dispersion among the massive stars in the young region M17…

Astrophysics of Galaxies · Physics 2024-10-09 M. C. Ramírez-Tannus , A. R. Derkink , F. Backs , A. de Koter , H. Sana , J. Poorta , L. Kaper , M. Stoop

Massive stars play a major role in the evolution of their host galaxies, and serve as important probes of the distant Universe. It has been established that the majority of massive stars reside in close binaries and will interact with their…

Solar and Stellar Astrophysics · Physics 2023-11-06 Pablo Marchant , Julia Bodensteiner

Stellar multiplicity is believed to influence planetary formation and evolution, although the precise nature and extent of this role remain ambiguous. We present a study aimed at testing the role of stellar multiplicity in the formation…

Earth and Planetary Astrophysics · Physics 2019-03-29 C. Fontanive , K. Rice , M. Bonavita , E. Lopez , K. Muzic , B. Biller

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

We apply probabilistic generative modelling of colour-magnitude diagrams to six young Galactic open star clusters and determine their mass functions, binary mass-ratio distributions, and the frequencies of binary stars. We find that younger…

Astrophysics of Galaxies · Physics 2024-11-26 Jason Alexander , Michael Albrow

[abridged] The galactic field's late-type stellar single and binary population is calculated on the supposition that all stars form as binaries in embedded star clusters. A recently developed tool (Marks, Kroupa & Oh) is used to evolve the…

Astrophysics of Galaxies · Physics 2015-05-30 Michael Marks , Pavel Kroupa

We simulate a cluster of 144179 stars including 13107 primordial hard binaries (10% of the total number of single stars and binary centers of mass), using direct integration of the equations of motion of all stars and binaries and…

Astrophysics · Physics 2007-05-23 Simon Portegies Zwart , Steve McMillan

In order to interpret the results of complex realistic star cluster simulations, which rely on many simplifying approximations and assumptions, it is essential to study the behavior of even more idealized models, which can highlight the…

Astrophysics · Physics 2009-11-11 D. C. Heggie , M. Trenti , P. Hut