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[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…

太阳与恒星天体物理 · 物理学 2020-01-08 J. O. Sundqvist , R. Björklund , J. Puls , F. Najarro

Mass loss forms an important aspect of the evolution of massive stars, as well as for the enrichment of the surrounding ISM. Our goal is to predict accurate mass-loss rates and terminal wind velocities. These quantities can be compared to…

太阳与恒星天体物理 · 物理学 2015-06-03 L. E. Muijres , Jorick S. Vink , A. de Koter , P. E. Mueller , N. Langer

Massive stars lose a large fraction of their mass to radiation-driven winds throughout their entire life. These outflows impact both the life and death of these stars and their surroundings. Theoretical mass-loss rates of hot, massive stars…

太阳与恒星天体物理 · 物理学 2022-03-17 R. Björklund , J. O. Sundqvist , S. M. Singh , J. Puls , F. Najarro

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…

太阳与恒星天体物理 · 物理学 2023-05-17 Alex Camilo Gormaz-Matamala , Jorge Cuadra , Georges Meynet , Michel Curé

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…

太阳与恒星天体物理 · 物理学 2021-04-14 R. Björklund , J. O. Sundqvist , J. Puls , F. Najarro

Radiation-driven winds heavily influence the evolution and fate of massive stars. Feedback processes from these winds impact the properties of the interstellar medium of their host galaxies. The dependence of mass loss on stellar properties…

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…

We constrain wind parameters of a sample of 18 O-type stars in the LMC, through analysis with stellar atmosphere and wind models including the effects of optically thick clumping. This allows us to determine the most accurate spectroscopic…

太阳与恒星天体物理 · 物理学 2024-10-09 C. Hawcroft , L. Mahy , H. Sana , J. O. Sundqvist , M. Abdul-Masih , S. A. Brands , L. Decin , A. deKoter , J. Puls

The winds of massive stars remove a significant fraction of their mass, strongly impacting their evolution. As a star evolves, the rate at which it loses mass changes. In stellar evolution codes, different mass-loss recipes are employed for…

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,…

太阳与恒星天体物理 · 物理学 2017-02-01 Zsolt Keszthelyi , Joachim Puls , Gregg Wade

We have calculated mass-loss rates for a grid of wind models covering a wide range of stellar parameters and have derived a mass-loss recipe for two ranges of effective temperature at either side of the bi-stability jump around spectral…

天体物理学 · 物理学 2007-05-23 Jorick S. Vink , Alex de Koter , Henny J. G. L. M. Lamers

We provide mass-loss rate predictions for O stars from Large and Small Magellanic Clouds. We calculate global (unified, hydrodynamic) model atmospheres of main sequence, giant, and supergiant stars for chemical composition corresponding to…

太阳与恒星天体物理 · 物理学 2018-04-25 Jiri Krticka , Jiri Kubat

The rate at which massive stars eject mass in stellar winds significantly influences their evolutionary path. Cosmic rates of nucleosynthesis, explosive stellar phenomena, and compact object genesis depend on this poorly known facet of…

太阳与恒星天体物理 · 物理学 2018-04-11 Henry A. Kobulnicky , William T. Chick , Matthew S. Povich

Massive stars present strong stellar that which are described by the radiation driven wind theory. Accurate mass-loss rates are necessary to properly describe the stellar evolution across the Hertzsprung--Russel Diagram. We present a…

太阳与恒星天体物理 · 物理学 2019-03-20 Alex C. Gormaz-Matamala , Michel Curé , Lydia S. Cidale , Roberto O. J. Venero

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…

We have determined accurate values of the product of the mass-loss rate and the ion fraction of P^{4+}, Mdot q(P^{4+}), for a sample of 40 Galactic O-type stars by fitting stellar-wind profiles to observations of the P V resonance doublet…

天体物理学 · 物理学 2008-11-26 A. W. Fullerton , D. L. Massa , R. K. Prinja

I discuss observational evidence -- independent of the direct spectral diagnostics of stellar winds themselves -- suggesting that mass-loss rates for O stars need to be revised downward by roughly a factor of three or more, in line with…

天体物理学 · 物理学 2007-10-19 Nathan Smith

We provide new line-driven wind models for OB stars with metallicities down to $0.01\,Z_\odot$. The models were calculated with our global wind code METUJE, which solves the hydrodynamical equations from nearly hydrostatic photosphere to…

太阳与恒星天体物理 · 物理学 2025-09-01 Jiri Krticka , Jiri Kubat , Iva Krtickova

Context. Radiation-driven mass loss is key to our understanding of massive-star evolution. However, for low-luminosity O-type stars there are big discrepancies between theoretically predicted and empirically derived mass-loss rates (called…

太阳与恒星天体物理 · 物理学 2021-04-21 C. Lagae , F. A. Driessen , L. Hennicker , N. D. Kee , J. O. Sundqvist

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…

太阳与恒星天体物理 · 物理学 2025-12-18 Timothy N. Parsons , Raman K. Prinja , Derck L. Massa , Alex W. Fullerton
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