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Related papers: ISOSCELES project: A grid-based quantitative spect…

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Grids of stellar models are useful tools to derive the properties of stellar clusters, in particular young clusters hosting massive stars, and to provide information on the star formation process in various mass ranges. Because of their…

Solar and Stellar Astrophysics · Physics 2019-05-01 L. Haemmerlé , P. Eggenberger , S. Ekström , C. Georgy , G. Meynet , A. Postel , M. Audard , M. Sørensen , T. Fragos

We perform spectral fitting for a set of O-type stars based on self-consistent wind solutions, which provide mass-loss rate and velocity profiles directly derived from the initial stellar parameters. The great advantage of this…

Accurate mass-loss rates and terminal velocities from massive stars winds are essential to obtain synthetic spectra from radiative transfer calculations and to determine the evolutionary path of massive stars. From a theoretical point of…

Solar and Stellar Astrophysics · Physics 2021-04-21 I. Araya , A. Christen , M. Curé , L. S. Cidale , R. O. J. Venero , C. Arcos , A. C. Gormaz-Matamala , M. Haucke , P. Escárate , H. Clavería

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

Stellar evolution models of massive stars are very sensitive to the adopted mass-loss scheme. The magnitude and evolution of mass-loss rates significantly affect the main sequence evolution, and the properties of post-main sequence objects,…

Solar and Stellar Astrophysics · Physics 2017-02-01 Zsolt Keszthelyi , Joachim Puls , Gregg Wade

The IACOB and OWN surveys are two ambitious complementary observational projects which have made available a large multi-epoch spectroscopic database of optical high resolution spectra of Galactic massive O-type stars. As a first step in…

We present the IACOB grid-based automatic tool for the quantitative spectroscopic analysis of O-stars. The tool consists of an extensive grid of FASTWIND models, and a variety of programs implemented in IDL to handle the observations,…

Solar and Stellar Astrophysics · Physics 2015-06-03 S. Simón-Díaz , N. Castro , A. Herrero , J. Puls , M. Garcia , C. Sabín-Sanjulián

Massive O-type stars lose a significant fraction of their mass through radiation-driven winds, a process that critically shapes their evolution and feedback into the interstellar medium. Accurate predictions of mass-loss rates are essential…

Solar and Stellar Astrophysics · Physics 2026-02-19 F. Figueroa-Tapia , J. A. Panei , M. Curé , I. Araya , S. Ekström , A. C. Gormaz-Matamala , R. O. J. Venero , L. S. Cidale

Mass loss governs the evolution of massive stars and shapes the stellar surroundings. To quantify the impact of the stellar winds we need to know the exact mass-loss rates; however, empirical constraints on the rates are hampered by limited…

Reliable predictions of mass-loss rates are important for massive-star evolution computations. We aim to provide predictions for mass-loss rates and wind-momentum rates of O-type stars, carefully studying the behaviour of these winds as…

Solar and Stellar Astrophysics · Physics 2021-04-14 R. Björklund , J. O. Sundqvist , J. Puls , F. Najarro

Stellar clusters are critical constituents within galaxies: they are the result of highest-density star formation, and through their spatially and temporally correlated feedback they regulate their host galaxy evolution. We present a novel…

Astrophysics of Galaxies · Physics 2024-08-12 Marta Reina-Campos , Oleg Y. Gnedin , Alison Sills , Hui Li

We present a dense grid of evolutionary tracks and isochrones of rotating massive main-sequence stars. We provide three grids with different initial compositions tailored to compare with early OB stars in the Small and Large Magellanic…

Mass loss from massive stars plays a determining role in their evolution through the upper Hertzsprung-Russell diagram. The hydrodynamic theory that describes their steady-state winds is the line-driven wind theory (m-CAK). From this…

Solar and Stellar Astrophysics · Physics 2023-05-22 Michel Cure , Ignacio Araya

[Abridged] Context: Radiation-driven mass loss plays a key role in the life-cycles of massive stars. However, basic predictions of such mass loss still suffer from significant quantitative uncertainties. Aims: We develop new…

Solar and Stellar Astrophysics · Physics 2020-01-08 J. O. Sundqvist , R. Björklund , J. Puls , F. Najarro

Massive stars are extremely luminous and drive strong winds, blowing a large part of their matter into the galactic environment before they finally explode as a supernova. Quantitative knowledge of massive star feedback is required to…

Solar and Stellar Astrophysics · Physics 2016-10-12 Lidia M. Oskinova , Brankica Kubatova , Wolf-Rainer Hamann

We present a comprehensive grid of synthetic stellar-atmosphere spectra, suitable for the analysis of high resolution spectra of hydrogen-deficient post-Asymptotic Giant Branch (post-AGB) objects hotter than 50000 K, migrating along the…

Solar and Stellar Astrophysics · Physics 2012-11-02 Graziela R. Keller , James E. Herald , Luciana Bianchi , Walter J. Maciel , Ralph C. Bohlin

Wind models of very massive stars with metallicities in a range from 1E-4 to 1.0 solar are calculated using a new treatment of radiation driven winds with depth dependent radiative force multipliers and a comprehensive list of more than two…

Astrophysics · Physics 2011-06-21 Rolf P. Kudritzki

Mass-loss from massive stars is fundamental to stellar and galactic evolution and enrichment of the interstellar medium. Reliable determination of mass-loss rate is dependent upon unravelling details of massive star outflows, including…

Solar and Stellar Astrophysics · Physics 2025-12-18 Timothy N. Parsons , Raman K. Prinja , Derck L. Massa , Alex W. Fullerton

We present MCSED, a new spectral energy distribution (SED)-fitting code, which mates flexible stellar evolution calculations with the Markov Chain Monte Carlo algorithms of the software package emcee. MCSED takes broad, intermediate, and…

Modern stellar structure and evolution theory experiences a lack of observational calibrations for the interior physics of intermediate- and high-mass stars. This leads to discrepancies between theoretical predictions and observed phenomena…

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