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The stellar masses, mean ages, metallicities, and star formation histories of galaxies are now commonly estimated via stellar population synthesis (SPS) techniques. SPS relies on stellar evolution calculations from the main sequence to…

Astrophysics · Physics 2009-08-18 Charlie Conroy , James E. Gunn , Martin White

The most metal-poor, high redshift damped Lyman-alpha systems (DLAs) provide a window to study some of the first few generations of stars. In this paper, we present a novel model to investigate the chemical enrichment of the near-pristine…

Solar and Stellar Astrophysics · Physics 2019-08-16 Louise Welsh , Ryan Cooke , Michele Fumagalli

A new tool for the Evolutionary Synthesis of Stellar Populations (EPS) is presented, which is based on three independent matrices, giving respectively: 1) the fuel consumption during each evolutionary phase as a function of stellar mass; 2)…

Astrophysics · Physics 2009-10-30 Claudia Maraston

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

The origin of carbon in the Universe remains uncertain. At solar metallicity, binary-stripped massive stars -- stars that lost their envelope through stable interaction with a companion -- have been suggested to produce twice as much carbon…

Solar and Stellar Astrophysics · Physics 2026-01-14 Jing-Ze Ma , Rob Farmer , Selma E. de Mink , Eva Laplace

The chemical enrichment of the Universe; the mass spectrum of planetary nebulae, white dwarfs and gravitational wave progenitors; the frequency distribution of Type I and II supernovae; the fate of exoplanets ... a multitude of phenomena…

Solar and Stellar Astrophysics · Physics 2021-10-05 Leen Decin

Observations of hot Jupiter type exoplanets suggest that their orbital period distribution depends on the metallicity of their host star. We investigate here whether the impact of the stellar metallicity on the evolution of the tidal…

Earth and Planetary Astrophysics · Physics 2017-08-23 Emeline Bolmont , Florian Gallet , Stéphane Mathis , Corinne Charbonnel , Louis Amard , Yann Alibert

Chemical evolution models are powerful tools for interpreting stellar abundance surveys and understanding galaxy evolution. However, their predictions depend heavily on the treatment of inflow, outflow, star formation efficiency (SFE), the…

Astrophysics of Galaxies · Physics 2017-02-08 Brett H. Andrews , David H. Weinberg , Ralph Schönrich , Jennifer A. Johnson

Our understanding of massive star evolution is in flux, due to recent upheavals in our view of mass loss, and observations of a high binary fraction among O-type stars. Mass-loss rates for standard metallicity-dependent winds of hot stars…

Solar and Stellar Astrophysics · Physics 2015-06-18 Nathan Smith

We complement our study of alpha/Fe enhanced stellar population models of Lick absorption indices (Thomas et al. 2003) by comparing two sets of alpha/Fe enhanced models. In both models the impact on Lick indices due to alpha/Fe enhancement…

Astrophysics · Physics 2009-11-07 Daniel Thomas , Claudia Maraston

We aim to determine the constraints that observed chemical abundances put on the potential role of mass loss in metal poor dwarfs. Self-consistent stellar evolutionary models that include all the effects of atomic diffusion and radiative…

Solar and Stellar Astrophysics · Physics 2015-06-15 Mathieu Vick , Georges Michaud , Jacques Richer , Olivier Richard

Context: Starbursts, and particularly their high-mass stars, play an essential role in the evolution of galaxies. The winds of massive stars not only significantly influence their surroundings, but the mass loss also profoundly affects the…

Solar and Stellar Astrophysics · Physics 2015-05-28 A. W. A. Pauldrach , D. Vanbeveren , T. L. Hoffmann

Mass loss due to line-driven winds is central to our understanding of the evolution of massive stars. We extend the evolution models introduced in Paper I, where the mass loss recipe is based on the simultaneous calculation of the wind…

Solar and Stellar Astrophysics · Physics 2023-05-17 Alex Camilo Gormaz-Matamala , Jorge Cuadra , Georges Meynet , Michel Curé

We present numerical models of the nebular emission from H II regions around young stellar populations over a range of compositions and ages. The synthetic stellar pop- ulations include both single stars and interacting binary stars. We…

Astrophysics of Galaxies · Physics 2018-03-28 Lin Xiao , Elizabeth Stanway , J. J. Eldridge

Many of the short-lived radioactive nuclei that were present in the early Solar System can be produced in massive stars. In the first paper in this series (Brinkman et al. 2019), we focused on the production of $^{26}$Al in massive…

Solar and Stellar Astrophysics · Physics 2023-08-02 Hannah E. Brinkman , C. L. Doherty , M. Pignatari , O. R. Pols , M. Lugaro

Using data from the IMACS Cluster Building Survey and from nearby galaxy surveys, we examine the evolution of the rate of star formation in field galaxies from $ z = 0.60$ to the present. Fitting the luminosity function to a standard…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Augustus Oemler , Alan Dressler , Michael G. Gladders , Jacopo Fritz , Bianca M. Poggianti , Benedetta Vulcani , Louis Abramson

A chemical evolution model following the evolution of the abundances of H, He, C, N, O and Fe for dwarf irregular and blue compact galaxies is presented. This model takes into account detailed nucleosynthesis and computes in detail the…

Astrophysics · Physics 2007-05-23 F. Bradamante , F. Matteucci , A. D'Ercole

We investigate stellar elemental abundance patterns at z = 0 in 8 low-mass (M_* = 10^6 - 10^9 M_sun) galaxies in the Feedback in Realistic Environments (FIRE-2) cosmological simulations. Using magnesium (Mg) as a representative…

Be stars are rapidly rotating B main sequence stars, which show line emission due to an outflowing disc. By studying the evolution of rotating single star models, we can assess their contribution to the observed Be star populations. We…

Solar and Stellar Astrophysics · Physics 2020-01-29 Ben Hastings , Chen Wang , Norbert Langer

Intermediate mass stellar evolution tracks from the main sequence to the tip of the AGB for five initial masses (2 to 6Msun) and metallicity Z=0.0001 have been computed. The detailed 1D structure and evolution models include exponential…

Astrophysics · Physics 2016-08-30 Falk Herwig
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