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We present the main-sequence binary (MSMS) Catalog derived from Gaia Data Release 3 BP/RP (XP) spectra. Leveraging the vast sample of low-resolution Gaia XP spectra, we develop a forward modeling approach that maps stellar mass and…

Next-generation gravitational wave detectors are expected to detect millions of compact binary mergers across cosmological distances. The features of the mass distribution of these mergers, combined with gravitational wave distance…

Cosmology and Nongalactic Astrophysics · Physics 2025-05-30 Soumendra Kishore Roy , Lieke A. C. van Son , Anarya Ray , Will M. Farr

This review deals with stellar population models computed by means of the evolutionary synthesis technique that was pioneered by Beatrice Tinsley roughly three decades ago. The focus is on the simplest models, the so called Simple Stellar…

Astrophysics · Physics 2009-11-07 Claudia Maraston

Subdwarf B stars are a well-known class of hot, low-mass stars thought to be formed through interactions in stellar binary systems. While different formation channels for subdwarf B stars have been studied through a binary population…

Solar and Stellar Astrophysics · Physics 2024-12-17 Nicolás Rodríguez-Segovia , Ashley J. Ruiter , Ivo R. Seitenzahl

The mass discrepancy problem, observed in high-mass stars within eclipsing binaries, highlights systematic differences between dynamical and evolutionary mass estimates, challenging the accuracy of stellar evolution models. We aim to…

Solar and Stellar Astrophysics · Physics 2025-07-15 Nadya Serebriakova , Andrew Tkachenko , Cole Johnston , Krešimir Pavlovski , Conny Aerts

The observable characteristics and subsequent evolution of young stellar populations is dominated by their massive stars. As our understanding of those massive stars and the factors affecting their evolution improves, so our interpretation…

Astrophysics of Galaxies · Physics 2022-09-28 Jan J. Eldridge , Elizabeth R. Stanway

Millisecond pulsars (MSPs) are the oldest but fastest pulsars known to date. In the 1980s, to explain how these pulsars could be formed, a new hypothesis was formulated: the recycling of pulsars, i.e the fact that a pulsar could accrete…

High Energy Astrophysical Phenomena · Physics 2026-03-16 Mattéo Sautron , Jérôme Pétri , Dipanjan Mitra , Adélie Dupuy--Junet , Marie-Eloïse Pietrin

Context: The dynamical evolution of binary populations in embedded star clusters shapes the statistical properties of binaries observed in the Galactic field. Accurately modelling this process requires resolving both early cluster dynamics…

Astrophysics of Galaxies · Physics 2026-02-03 Wenjie Wu , Pavel Kroupa , Vikrant V. Jadhav

We have constructed a new code to produce synthetic spectra of stellar populations that includes massive binaries. We have tested this code against the broadband colours of unresolved young massive stellar clusters in nearby galaxies, the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 John J. Eldridge , Elizabeth R. Stanway

Binary populations in young star clusters show multiplicity fractions both lower and up to twice as high as those observed in the Galactic field. We follow the evolution of a population of binary stars in dense and loose star clusters…

Astrophysics of Galaxies · Physics 2015-06-05 Michael Marks , Pavel Kroupa

Context: Field stars are not always single stars, but can often be found in bound double systems. Since binary frequencies in the birth places of stars, young embedded clusters, are sometimes even higher than on average the question arises…

Astrophysics of Galaxies · Physics 2015-05-27 Thomas Kaczmarek , Christoph Olczak , Susanne Pfalzner

An update is presented to the software package SeBa for simulating single star and binary evolution in which new stellar evolution tracks have been implemented. SeBa is applied to study the population of close double white dwarf and the…

Solar and Stellar Astrophysics · Physics 2015-03-17 Silvia Toonen , Gijs Nelemans , Simon Portegies Zwart

This is the third paper of a series reporting the results from the POPSTAR evolutionary synthesis models. The main goal of this work is to present and discuss the synthetic photometric properties of Single Stellar Populations (SSPs)…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 M. L. García-Vargas , M. Mollá , M. L. Martín-Manjón

With the remarkable success of the LVK consortium in detecting binary black hole mergers, it has become possible to use the population properties to constrain our understanding of the progenitor stars' evolution. The most striking features…

High Energy Astrophysical Phenomena · Physics 2023-02-15 M. M. Briel , H. F. Stevance , J. J. Eldridge

The complexity of composite spectra of close binary star system makes study of the spectra of their component stars extremely difficult. For this reason there exists very little information on the photospheric chemical composition of stars…

Solar and Stellar Astrophysics · Physics 2014-03-05 K. Pavlovski , J. Southworth

We present the results of an analysis aimed at testing the accuracy and precision of the PARSEC v1.2S library of stellar evolution models, in a Bayesian framework, to infer stellar parameters. We mainly employ the online DEBCat catalogue by…

Solar and Stellar Astrophysics · Physics 2021-06-22 Carlos del Burgo , Carlos Allende Prieto

The evolution of AGB stars is notoriously complex. The confrontation of AGB population models with observed stellar populations is a useful alternative to the detailed study of individual stars in efforts to converge towards a reliable…

Astrophysics of Galaxies · Physics 2010-11-23 Ariane Lançon

The effectiveness and stability of mass transfer in binaries system are crucial in determining its final product. Rapid binary population synthesis (BPS) codes simplify the complex physics of mass transfer by adopting parameterized…

Solar and Stellar Astrophysics · Physics 2025-11-26 A. C. Rubio , K. Breivik , C. Badenes , K. El-Badry , B. Anguiano , E. Linck , S. Majewski , K. Stassun

High resolution spectral models for simple stellar populations (SSP) developed in the past few years have become a standard ingredient in studies of stellar population of galaxies. As more such models become available, it becomes…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Roberto Cid Fernandes , Rosa M. Gonzalez Delgado

Binaries that contain a hot subdwarf (sdB) star and a main sequence companion may have interacted in the past. This binary population has historically helped determine our understanding of binary stellar evolution. We have computed a grid…

Solar and Stellar Astrophysics · Physics 2015-06-03 Drew Clausen , Richard A Wade , Ravi kumar Kopparapu , Richard O'Shaughnessy
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