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We present a numerical code intended for calculating stellar evolution in close binary systems. In doing so, we consider that mass transfer episodes occur when the stellar size overflows the corresponding Roche lobe. In such situation we…

Astrophysics · Physics 2009-11-07 O. G. Benvenuto , M. A. De Vito

We compare the growth in stellar mass of galaxies in the $6<z<12$ epoch with predictions of a semi-analytic galaxy formation model - Galacticus. In contrast to diverse and controversial results that compare models and data for the…

Astrophysics of Galaxies · Physics 2026-02-03 Alan Dressler , Andrew Benson

The mass distribution of compact objects provides a fossil record that can be studied to uncover information on the late stages of massive star evolution, the supernova explosion mechanism, and the dense matter equation of state.…

High Energy Astrophysical Phenomena · Physics 2018-04-04 Carolyn A. Raithel , Tuguldur Sukhbold , Feryal Özel

We use Geneva-evolution-code to run evolutionary tracks for stellar masses ranging from $20$ to $85$ $M_\odot$ at SMC metallicity ($Z=0.002$). We upgrade the recipe for stellar winds by adopting our self-consistent m-CAK prescription, which…

Solar and Stellar Astrophysics · Physics 2024-07-24 Alex Camilo Gormaz-Matamala , Jorge Cuadra , Sylvia Ekström , Georges Meynet , Michel Curé , Krzysztof Belczynski

We review the theory of electron-conduction opacity, a fundamental ingredient in the computation of low-mass stellar models; shortcomings and limitations of the existing calculations used in stellar evolution are discussed. We then present…

Astrophysics · Physics 2008-11-26 S. Cassisi , A. Y. Potekhin , A. Pietrinferni , M. Catelan , M. Salaris

We have developed a novel Monte Carlo method for simulating the dynamical evolution of stellar systems in arbitrary geometry. The orbits of stars are followed in a smooth potential represented by a basis-set expansion and perturbed after…

Astrophysics of Galaxies · Physics 2014-12-04 Eugene Vasiliev

In this paper, we compare the currently available evolutionary tracks for Galactic massive stars. Our main goal is to highlight the uncertainties on the predicted evolutionary paths. We compute stellar evolution models with the codes MESA…

Solar and Stellar Astrophysics · Physics 2015-06-17 F. Martins , A. Palacios

Stellar evolution models are a cornerstone of young star astrophysics, which necessitates that they yield accurate and reliable predictions of stellar properties. Here, I review the current performance of stellar evolution models against…

Solar and Stellar Astrophysics · Physics 2016-02-03 Gregory A. Feiden

The cumulative number density matching approach equates number densities between adjacent redshifts to derive empirical galaxy evolution tracks from the observed galaxy stellar mass function. However, it is well known that this approach…

Astrophysics of Galaxies · Physics 2025-04-03 Aldo Rodriguez-Puebla , Vladimir Avila-Reese , Joel R. Primack , Carlo Cannarozzo

We study the impact of star formation and stellar feedback prescriptions on galaxy properties predicted by means of "stripped-down" versions of independently developed semi-analytic models (SAMs). These include cooling, star formation,…

Cosmology and Nongalactic Astrophysics · Physics 2013-01-21 Fabio Fontanot , Gabriella De Lucia , Andrew J. Benson , Pierluigi Monaco , Michael Boylan-Kolchin

We present a new implementation of the Monte Carlo method to simulate the evolution of star clusters. The major improvement with respect to the previously developed codes is the treatment of the external tidal field taking into account for…

Solar and Stellar Astrophysics · Physics 2015-06-22 A. Sollima , A. Mastrobuono Battisti

We introduce and apply a new approach to probe the response of galactic stellar haloes to the interplay between cosmological merger histories and galaxy formation physics. We perform dark matter-only, zoomed simulations of two Milky…

Astrophysics of Galaxies · Physics 2022-01-21 Martin P. Rey , Tjitske K. Starkenburg

In a previous paper, we described a new method for including detailed information about substructure in semi-analytic models of dark matter halo formation based on merger trees. In this paper, we present the basic predictions of our full…

Astrophysics · Physics 2009-11-10 James E. Taylor , Arif Babul

The Sun provides a critical benchmark for the general study of stellar structure and evolution. Also, knowledge about the internal properties of the Sun is important for the understanding of solar atmospheric phenomena, including the solar…

Solar and Stellar Astrophysics · Physics 2021-05-17 Joergen Christensen-Dalsgaard

At a fixed halo mass, galaxy clusters with higher magnitude gaps have larger brightest central galaxy (BCG) stellar masses. Recent studies have shown that by including the magnitude gap ($\rm m_{gap}$) as a latent parameter in the stellar…

Astrophysics of Galaxies · Physics 2019-06-12 Jesse B. Golden-Marx , Christopher J. Miller

First, we review the main physical effects to be considered in the building of evolutionary models of rotating stars on the Upper Main-Sequence (MS). The internal rotation law evolves as a result of contraction and expansion, meridional…

Astrophysics · Physics 2009-10-31 Andre Maeder , Georges Meynet

So far, stellar population studies have mainly focused on the evolution of single and binary stars. Recent observations show that triple and higher order multiple star systems are common, especially among massive stars. Introducing…

Solar and Stellar Astrophysics · Physics 2023-06-19 F. Kummer , S. Toonen , A. de Koter

(Abridged) The dynamical ejection of stars from star clusters affects the shape of the stellar mass function (MF) in these clusters, because the escape probability of a star depends on its mass. The objective of this paper is to provide and…

Astrophysics of Galaxies · Physics 2015-05-14 J. M. Diederik Kruijssen

We have developed a new semi-analytic model for the formation and evolution of structure on galaxy, group and cluster scales. The model combines merger trees with a detailed, spatially resolved description of the dynamical evolution of halo…

Astrophysics · Physics 2007-05-23 James E. Taylor , Arif Babul

We study the structure and evolution of neutron stars (NS) the interiors of which are modeled using microscopic approaches and constrained by the condition that the equation of state (EoS) of matter extrapolated to high densities should not…

Astrophysics · Physics 2008-12-18 Hovik Grigorian