Results 51 to 60 of about 720,446 (211)
The Population Synthesis of Wolf–Rayet Stars Involving Binary Merger Channels
The Astrophysical JournalWolf–Rayet (W-R) stars are very important massive stars. However, their origin and the observed binary fraction within the entire W-R population are still debated.
Zhuowen Li +7 more
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Wolf-Rayet stellar evolution models with improved treatment of the atmosphere
Astronomy & AstrophysicsContext. Evolutionary models of massive stars are quasi-exclusively computed using an Eddington gray atmosphere. This approximation does not accurately describe the complex physical phenomena occurring in the atmosphere of massive stars. Aims.
Voje Thomas +2 more
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Metallicity Dependent Wolf-Rayet Winds [PDF]
, 2005 Observational and theoretical evidence in support of metallicity dependent winds for Wolf-Rayet stars is considered. Well known differences in Wolf-Rayet subtype distributions in the Milky Way, LMC and SMC may be attributed to the sensitivity of subtypes
Jorick S. Vink +4 more
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Direct Evidence for Outflow Driven by Wolf–Rayet Stars in the Nearby Galaxy PGC 44685
The Astrophysical JournalWolf–Rayet (WR) stars are evolved massive stars that can drive strong stellar winds, injecting energy and momentum into the interstellar medium (ISM).
Qian Huang +5 more
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Wolf–Rayet stars as tracers of gamma-ray emission
Astronomy & AstrophysicsContext. Recent gamma-ray observations of young star clusters revealed that stellar wind termination shocks accelerate particles. The energy reservoir for particle acceleration is provided by the wind mechanical power of cluster member stars. Aims.
Inventar A. +3 more
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VLA 22 GHz Imaging of Massive Star Formation in Local Wolf–Rayet Galaxies
The Astrophysical JournalWe present 22 GHz imaging of regions of massive star formation within the Local Wolf–Rayet Galaxy Sample, a NSF Karl G. Jansky Very Large Array survey of 30 local galaxies showing spectral features of Wolf–Rayet (WR) stars.
Nicholas G. Ferraro +6 more
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Quantitative spectroscopy of Wolf-Rayet stars [PDF]
International Astronomical Union Colloquium, 1988 Advances in theoretical modeling of rapidly expanding atmospheres in the past few years made it possible to determine the stellar parameters of the Wolf-Rayet stars. This progress is mainly due to the improvement of the models with respect to their spatial extension: The new generation of models treat spherically-symmetric expanding atmospheres, i.e ...
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The Discovery of Three Galactic Wolf–Rayet Stars
The Astronomical JournalWolf–Rayet stars (WRs) are evolved massive stars in the brief stage before they undergo core collapse. Not only are they rare, but they also can be particularly difficult to find due to the high extinction in the Galactic plane.
Laurella C. Marin +3 more
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The History Goes On: Century Long Study of Romano’s Star
Galaxies, 2019 GR 290 (M 33 V0532 = Romano’s Star) is a unique variable star in the M33 galaxy, which simultaneously displays variability typical for luminous blue variable (LBV) stars and physical parameters typical for nitrogen-rich Wolf-Rayet (WR) stars (WN ...
Olga Maryeva +5 more
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How Massive the Wolf-Rayet Stars are ? [PDF]
International Astronomical Union Colloquium, 1981 If the Wolf-Rayet stars are produced by the evolution of massive stars with mass loss (Paczynski 1967, Conti 1976) from 0 stars to WN stars and thereafter to WC stars, then we may expect to observe a correlation of decreasing mean masses in the same sense as the evolution.Information about the masses of TO stars are obtained from studies of binary ...
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