Results 61 to 70 of about 1,197,942 (368)

Massive runaway and walkaway stars [PDF]

open access: yesAstronomy & Astrophysics, 2018
We perform an extensive numerical study of the evolution of massive binary systems to predict the peculiar velocities that stars obtain when their companion collapses and disrupts the system.
M. Renzo   +8 more
semanticscholar   +1 more source

Developments in Physics of Massive Stars [PDF]

open access: yesProceedings of the International Astronomical Union, 2007
AbstractNew constraints on stellar models are provided by large surveys of massive stars, interferometric observations and asteroseismology. After a review of the main results so far obtained, we present new results from rotating models and discuss comparisons with observed features. We conclude that rotation is a key feature of massive star physics.
Meynet, Georges   +5 more
openaire   +5 more sources

First HARPSpol discoveries of magnetic fields in massive stars [PDF]

open access: yes, 2011
In the framework of the Magnetism in Massive Stars (MiMeS) project, a HARPSpol Large Program at the 3.6m-ESO telescope has recently started to collect high-resolution spectropolarimetric data of a large number of Southern massive OB stars in the field of
Alecian   +38 more
core   +5 more sources

Gravoturbulent Star Formation: Effects of the Equation of State on Stellar Masses [PDF]

open access: yes, 2005
Stars form by gravoturbulent fragmentation of interstellar gas clouds. The supersonic turbulence ubiquitously observed in Galactic molecular gas generates strong density fluctuations with gravity taking over in the densest and most massive regions ...
Jappsen, A. -K.   +2 more
core   +2 more sources

The Evolution of Massive Stars [PDF]

open access: yesSymposium - International Astronomical Union, 1997
Massive stars are the crossroads of many important astrophysical problems and thus a proper understanding of their evolution is very needed. They are the main sources of UV radiation, by heating the interstellar dust they produce the far-IR luminosities of galaxies.
openaire   +2 more sources

High-velocity runaway stars from three-body encounters [PDF]

open access: yes, 2009
We performed numerical simulations of dynamical encounters between hard massive binaries and a very massive star (VMS; formed through runaway mergers of ordinary stars in the dense core of a young massive star cluster), in order to explore the hypothesis
A. Gualandris   +7 more
core   +1 more source

The MiMeS survey of Magnetism in Massive Stars : magnetic analysis of the O-type stars [PDF]

open access: yes, 2016
We present the analysis performed on spectropolarimetric data of 97 O-type targets included in the framework of the Magnetism in Massive Stars (MiMeS) Survey. Mean least-squares deconvolved Stokes I and V line profiles were extracted for each observation,
J. Grunhut   +13 more
semanticscholar   +1 more source

Evolution of Massive Population III Stars

open access: yesActa Polytechnica CTU Proceedings, 2014
While the evolution of massive stars in the local Universe is dominated by mass-loss, the evolution of massive Population III stars should be dominated by rotation.
Sung-Chul Yoon
doaj   +1 more source

Optical and Infrared Counterparts of the X-Ray Sources Detected in the Chandra Cygnus OB2 Legacy Survey

open access: yesThe Astrophysical Journal Supplement Series, 2023
The young massive OB association Cygnus OB2, in the Cygnus X complex, is the closest (∼1400 pc) star-forming region to the Sun hosting thousands of young low-mass stars and up to 1000 OB stars, among which are some of the most massive stars known in our ...
M. G. Guarcello   +6 more
doaj   +1 more source

Observations of magnetic fields in hot stars [PDF]

open access: yes, 2010
The presence of magnetic fields at the surfaces of many massive stars has been suspected for decades, to explain the observed properties and activity of OB stars. However, very few genuine high-mass stars had been identified as magnetic before the advent
Aurière   +16 more
core   +1 more source

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