Results 11 to 20 of about 1,189,468 (290)

Pre-supernova evolution, compact-object masses, and explosion properties of stripped binary stars [PDF]

open access: yesAstronomy & Astrophysics, 2020
The era of large transient surveys, gravitational-wave observatories, and multi-messenger astronomy has opened up new possibilities for our understanding of the evolution and final fate of massive stars.
F. Schneider   +2 more
semanticscholar   +1 more source

Adiabatic Mass Loss in Binary Stars. III. From the Base of the Red Giant Branch to the Tip of the Asymptotic Giant Branch [PDF]

open access: yesAstrophysical Journal, 2020
The distinguishing feature of the evolution of close binary stars is the role played by the mass exchange between the component stars. Whether or not the mass transfer is dynamically stable is one of the essential questions in binary evolution.
H. Ge   +3 more
semanticscholar   +1 more source

GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral [PDF]

open access: yesPhysical Review Letters, 2017
On August 17, 2017 at 12:41:04 UTC the Advanced LIGO and Advanced Virgo gravitational-wave detectors made their first observation of a binary neutron star inspiral.
The Ligo Scientific Collaboration   +1 more
semanticscholar   +2 more sources

V1507 CYGNI (HD187399): A Highly Evolved, Enigmatic Interacting Binary System with an Eccentric Orbit

open access: yesThe Astronomical Journal, 2023
The properties of the interacting, eccentric orbit binary V1507 Cyg (HD187399) are examined with spectra that cover wavelengths from 0.63–0.68 μ m. The spectrum of the brightest star is similar to that of the B8 I star β Ori, although with absorption ...
T. J. Davidge
doaj   +1 more source

Close Binary Companions to APOGEE DR16 Stars: 20,000 Binary-star Systems Across the Color–Magnitude Diagram [PDF]

open access: yesAstrophysical Journal, 2020
Many problems in contemporary astrophysics—from understanding the formation of black holes to untangling the chemical evolution of galaxies—rely on knowledge about binary stars.
A. Price-Whelan   +23 more
semanticscholar   +1 more source

NY Bootes: An Active Deep and Low-mass-ratio Contact Binary with a Cool Companion in a Hierarchical Triple System

open access: yesThe Astrophysical Journal, 2023
The first detailed photometric and spectroscopic study of G-type short-period binary NY Boo is presented. The radial velocity curve was obtained by the cross-correlation function (CCF) method based on LAMOST and SDSS spectra, which derived its mass ratio
Fangbin Meng   +5 more
doaj   +1 more source

Fast rotating stars resulting from binary evolution will often appear to be single [PDF]

open access: yes, 2010
Rapidly rotating stars are readily produced in binary systems. An accreting star in a binary system can be spun up by mass accretion and quickly approach the break-up limit.
Cantiello   +6 more
core   +3 more sources

Binary Companions of Evolved Stars in APOGEE DR14: Search Method and Catalog of ∼5000 Companions [PDF]

open access: yesAstronomical Journal, 2018
Multi-epoch radial velocity measurements of stars can be used to identify stellar, substellar, and planetary-mass companions. Even a small number of observation epochs can be informative about companions, though there can be multiple qualitatively ...
A. Price-Whelan   +12 more
semanticscholar   +1 more source

The SPHINX Cosmological Simulations of the First Billion Years: the Impact of Binary Stars on Reionization★ [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2018
We present the SPHINX suite of cosmological adaptive mesh refinement simulations, the first radiation-hydrodynamical simulations to simultaneously capture large-scale reionization and the escape of ionizing radiation from thousands of resolved galaxies ...
J. Rosdahl   +8 more
semanticscholar   +1 more source

Why binary interaction does not necessarily dominate the formation of Wolf-Rayet stars at low metallicity [PDF]

open access: yes, 2020
Classical Wolf-Rayet (WR) stars are massive, hydrogen depleted, post main-sequence stars that exhibit emission-line dominated spectra. For a given metallicity Z, stars exceeding a certain initial mass M_single(Z) can reach the WR phase through intrinsic ...
T. Shenar   +4 more
semanticscholar   +1 more source

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