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The mass spectrum of stellar-mass black holes (BHs) is highly uncertain. Dynamical mass measurements are available only for few ($\sim{}10$) BHs in X-ray binaries, while theoretical models strongly depend on the hydrodynamics of supernova…

太阳与恒星天体物理 · 物理学 2015-05-21 Mario Spera , Michela Mapelli , Alessandro Bressan

We present the first "combined stellar structure and atmosphere models" (CoStar) for massive stars, which consistently treat the entire mass loosing star from the center out to the asymptotic wind velocity. The models use up-to-date input…

天体物理学 · 物理学 2007-05-23 D. Schaerer , A. de Koter , W. Schmutz , A. Maeder

Many aspects of the evolution of stars, and in particular the evolution of binary stars, remain beyond our ability to model them in detail. Instead, we rely on observations to guide our often phenomenological models and pin down uncertain…

太阳与恒星天体物理 · 物理学 2018-08-22 Robert G. Izzard , Ghina M. Halabi

We examine star-formation and dust properties for a sample of 660 galaxies at $1.37\leq z\leq 2.61$ in the MOSDEF survey by dividing them into groups with similarly-shaped spectral energy distributions (SEDs). For each group, we combine the…

Stellar evolution tracks and isochrones are key inputs for a wide range of astrophysical studies; in particular, they are essential to the interpretation of photometric and spectroscopic observations of resolved and unresolved stellar…

天体物理学 · 物理学 2008-11-26 Daniel Cordier , Adriano Pietrinferni , Santi Cassisi , Maurizio Salaris

Asymptotic giant branch (AGB) stars play a significant role in our understanding of the origin of the elements. They contribute to the abundances of C, N, and approximately $50\%$ of the abundances of the elements heavier than iron. An…

太阳与恒星天体物理 · 物理学 2024-12-03 Zara Osborn , Amanda I. Karakas , Alex J. Kemp , Robert Izzard , Devika Kamath , Maria Lugaro

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…

太阳与恒星天体物理 · 物理学 2015-06-17 F. Martins , A. Palacios

The physical properties of galaxies are encoded within their spectral energy distribution and require comparison with models to be extracted. These models must contain a synthetic stellar population and, where infrared data is to be used,…

星系天体物理 · 物理学 2022-06-22 G. T. Jones , E. R. Stanway , A. C. Carnall

This paper is the 4th in a series describing the latest additions to the BaSTI stellar evolution database, which consists of a large set of homogeneous models and tools for population synthesis studies. Here we present a new set of low and…

天体物理学 · 物理学 2008-12-18 Susan M. Percival , Maurizio Salaris , Santi Cassisi , Adriano Pietrinferni

Rotation is a key ingredient in the theory of stellar structure and evolution. Until now, stellar evolution codes operate in a 1-D framework for which the validity domain in regards to the rotation rate is not well understood. This letter…

太阳与恒星天体物理 · 物理学 2023-09-06 Joey S. G. Mombarg , Michel Rieutord , Francisco Espinosa Lara

We present an extension of the pop-cosmos model for the evolving galaxy population up to redshift $z\sim6$. The model is trained on distributions of observed colors and magnitudes, from 26-band photometry of $\sim420,000$ galaxies in the…

We present a sample of synthetic massive stellar populations created using the Starburst99 evolutionary synthesis code and new sets of stellar evolutionary tracks, including one set that adopts a detailed treatment of rotation. Using the…

太阳与恒星天体物理 · 物理学 2015-06-04 Emily M. Levesque , Claus Leitherer , Sylvia Ekstrom , Georges Meynet , Daniel Schaerer

The cornerstone mission of the European Space Agency, Gaia, has revealed properties of 260 000 white dwarfs in the Galaxy, allowing us for the first time to constrain the evolution of white dwarfs with a large sample. Complementary surveys…

太阳与恒星天体物理 · 物理学 2020-10-12 Nadège Lagarde , Céline Reylé

The evolution and spectral properties of stars on the AGB are significantly affected by mass loss through dusty stellar winds. Dynamic atmosphere and wind models are an essential tool for studying these evolved stars, both individually and…

太阳与恒星天体物理 · 物理学 2014-07-02 Kjell Eriksson , Walter Nowotny , Susanne Höfner , Bernhard Aringer , Astrid Wachter

We use our new population synthesis code BONNFIRES to test how surface abundances predicted by rotating stellar models depend on the numerical treatment of rotational mixing, such as spatial resolution, temporal resolution and computation…

太阳与恒星天体物理 · 物理学 2014-11-05 Herbert H. B. Lau , Robert G. Izzard , Fabian R. N. Schneider

B-type stars are known to rotate at various velocities, including very fast rotators near the critical velocity as the Be stars. In this paper, we provide stellar models covering the mass range between 1.7 to 15 Msun, which includes the…

太阳与恒星天体物理 · 物理学 2015-06-15 Cyril Georgy , Sylvia Ekström , Anahí Granada , Georges Meynet , Nami Mowlavi , Patrick Eggenberger , André Maeder

The evolution of massive stars is affected by a variety of physical processes including convection, rotation, mass loss and binary interaction. Because these processes modify the internal chemical abundance profiles in multiple ways…

太阳与恒星天体物理 · 物理学 2023-04-18 Eoin Farrell , Jose Groh , Georges Meynet , JJ Eldridge

This is the first of a series of papers presenting the Modules for Experiments in Stellar Astrophysics (MESA) Isochrones and Stellar Tracks (MIST) project, a new comprehensive set of stellar evolutionary tracks and isochrones computed using…

太阳与恒星天体物理 · 物理学 2016-06-01 Jieun Choi , Aaron Dotter , Charlie Conroy , Matteo Cantiello , Bill Paxton , Benjamin D. Johnson

Grids of stellar evolution are required in many fields of astronomy/astrophysics, such as planet hosting stars, binaries, clusters, chemically peculiar stars, etc. In this study, a grid of stellar evolution models with updated ingredients…

太阳与恒星天体物理 · 物理学 2015-12-16 Mutlu Yildiz

We present a new set of synthesis models for stellar populations obtained with Starburst99, which are based on new stellar evolutionary tracks with rotation. We discuss models with zero rotation velocity and with velocities of 40% of the…