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We present cogsworth, an open-source Python tool for producing self-consistent population synthesis and galactic dynamics simulations. With cogsworth one can (1) sample a population of binaries and star formation history, (2) perform rapid…

Astrophysics of Galaxies · Physics 2024-11-07 Tom Wagg , Katelyn Breivik , Mathieu Renzo , Adrian M. Price-Whelan

We present pop-cosmos: a comprehensive model characterizing the galaxy population, calibrated to $140,938$ ($r<25$ selected) galaxies from the Cosmic Evolution Survey (COSMOS) with photometry in $26$ bands from the ultra-violet to the…

Astrophysics of Galaxies · Physics 2024-09-06 Justin Alsing , Stephen Thorp , Sinan Deger , Hiranya Peiris , Boris Leistedt , Daniel Mortlock , Joel Leja

Knowledge of the binary population in stellar groupings provides important information about the outcome of the star forming process in different environments. Binarity is also a key ingredient in stellar population studies and is a…

We first presented an isochrone database that can be widely used for stellar population synthesis studies and colour-magnitude diagram (CMD) fitting. The database consists of the isochrones of both single star and binary star simple stellar…

Astrophysics · Physics 2009-11-13 Zhongmu Li , Zhanwen Han

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

Stellar population synthesis is a crucial methodology in astrophysics, enabling the interpretation of the integrated light of galaxies and stellar clusters. By combining empirical and/or theoretical libraries of the spectral energy…

Instrumentation and Methods for Astrophysics · Physics 2025-07-30 Pablo Corcho-Caballero , Yago Ascasibar , Daniel Jiménez-López

Hot subdwarf B stars (sdBs) are helium-burning stars with thin hydrogen-rich envelopes. Their most widely accepted formation channels involve binary evolution and progenitors near the tip of the red giant branch, thus studying these objects…

Solar and Stellar Astrophysics · Physics 2025-05-12 Nicolás Rodríguez-Segovia , Ashley J. Ruiter

Using a population synthesis technique, we have calculated detailed models of the present-day field population of objects that have resulted from the merger of a giant primary and a main-sequence or brown dwarf secondary during…

Solar and Stellar Astrophysics · Physics 2015-05-19 Michael Politano , Marc van der Sluys , Ronald E. Taam , Bart Willems

The discovery of the first two macroscopic interstellar objects (ISOs) passing through the Solar System has opened entirely new perspectives in planetary science. The exploration of these objects offers a qualitatively new insight into the…

Earth and Planetary Astrophysics · Physics 2023-01-24 Dušan Marčeta

Gravitational-wave observations have just started probing the properties of black hole binary merger populations. The observation of binaries with very massive black holes and significantly asymmetric masses motivates the study of dense…

High Energy Astrophysical Phenomena · Physics 2024-08-20 Konstantinos Kritos , Vladimir Strokov , Vishal Baibhav , Emanuele Berti

Using the StarTrack population synthesis code we compute the distribution of masses of merging compact object (black hole or neutron star) binaries. The shape of the mass distribution is sensitive to some of the parameters governing the…

Astrophysics · Physics 2009-11-07 T. Bulik , K. Belczynski , V. Kalogera

Binary population synthesis (BPS) modelling is a very effective tool to study the evolution and properties of close binary systems. The uncertainty in the parameters of the model and their effect on a population can be tested in a…

Solar and Stellar Astrophysics · Physics 2015-06-18 S. Toonen , J. S. W. Claeys , N. Mennekens , A. J. Ruiter

Using our new Binary Population and Spectral Synthesis (BPASS) code we explore the affect of binary populations on the integrated spectra of galaxies. We also explore the interplay of binary populations and a varying maximum stellar mass.…

Solar and Stellar Astrophysics · Physics 2010-08-10 John J Eldridge

Stars spend most of their lifetime on the main sequence (MS), where hydrogen burning establishes the internal chemical structure that governs the subsequent evolution. In massive stars, mass loss through winds and binary interactions can…

Solar and Stellar Astrophysics · Physics 2026-04-30 Adam Brček , Ryosuke Hirai , Ilya Mandel , Harmony Lower

Following the collapse of their cores, some of the massive binary stars that populate our Universe are expected to form merging binaries composed of black holes and neutron stars. Gravitational-wave observations of the resulting compact…

High Energy Astrophysical Phenomena · Physics 2021-12-15 Maciej Dabrowny , Nicola Giacobbo , Davide Gerosa

Models of population synthesis for the Galaxy have been developed in order to understand galactic structure and evolution. They allow to test scenarii of evolution by comparisons between model predictions and observed distributions.…

Astrophysics · Physics 2009-10-22 A. C. Robin

Elliptical galaxies are believed to consist of a single population of old stars formed together at an early epoch in the Universe, yet recent analyses of galaxy spectra seem to indicate the presence of significant younger populations of…

Astrophysics · Physics 2007-05-23 Ata Kaban , Louisa A. Nolan , Somak Raychaudhury

The origins of merging compact binaries observed by gravitational-wave detectors remains highly uncertain. Several astrophysical channels may contribute to the overall merger rate, with distinct formation processes imprinted on the…

High Energy Astrophysical Phenomena · Physics 2025-07-03 Jack Heinzel , Matthew Mould , Sofía Álvarez-López , Salvatore Vitale

Double white dwarf (DWD) binaries are natural outcomes of binary stellar evolution and key sources for future space-based gravitational wave (GW) observatories such as Laser Interferometer Space Antenna (LISA). We investigate how different…

Solar and Stellar Astrophysics · Physics 2026-04-24 Sreeta Roy , Surajit Kalita

We present the software package binary_c-python which provides a convenient and easy-to-use interface to the binary_c framework, allowing the user to rapidly evolve individual systems and populations of stars. binary_c-python is available…

Solar and Stellar Astrophysics · Physics 2023-06-06 D. D. Hendriks , R. G. Izzard