Results 41 to 50 of about 1,207,219 (318)

Evolutionary models of zero metallicity stars [PDF]

open access: yes, 1999
We present new evolutionary models for zero-metallicity stars, covering a large range of initial masses (from 0.8 to 100 M_sun). Models are computed with overshooting from stellar cores and convective envelopes, and assuming mass-loss from the most ...
Chiosi, Cesare   +3 more
core   +2 more sources

Maser, infrared and optical emission for late-type stars in the Galactic plane [PDF]

open access: yes, 2017
Radio astrometric campaigns using VLBI have provided distances and proper motions for masers associated with young massive stars (BeSSeL survey). The ongoing BAaDE project plans to obtain astrometric information of SiO maser stars located in the inner ...
Brown, A. G. A.   +6 more
core   +3 more sources

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

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

Properties of massive stars in four clusters of the VVV survey

open access: yes, 2015
The evolution of massive stars is only partly understood. Observational constraints can be obtained from the study of massive stars located in young massive clusters.
Borissova, J.   +4 more
core   +3 more sources

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

Hypervelocity binary stars: smoking gun of massive binary black holes

open access: yes, 2007
The hypervelocity stars recently found in the Galactic halo are expelled from the Galactic center through interactions between binary stars and the central massive black hole or between single stars and a hypothetical massive binary black hole.
D. N. C. Lin   +4 more
core   +1 more source

Dynamical ejections of massive stars from young star clusters under diverse initial conditions [PDF]

open access: yes, 2016
We study the effects of initial conditions of star clusters and their massive star population on dynamical ejections of massive stars from star clusters up to an age of 3 Myr.
Seungkyung Oh, P. Kroupa
semanticscholar   +1 more source

Unveiling the Evolutionary State of Three B Supergiant Stars: PU Gem, ϵ CMa, and η CMa

open access: yesGalaxies, 2023
We aim to combine asteroseismology, spectroscopy, and evolutionary models to establish a comprehensive picture of the evolution of Galactic blue supergiant stars (BSG). To start such an investigation, we selected three BSG candidates for our analysis: HD
Julieta Paz Sánchez Arias   +5 more
doaj   +1 more source

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