Results 31 to 40 of about 159,122 (291)

COMMISSION 42: CLOSE BINARY STARS [PDF]

open access: yesProceedings of the International Astronomical Union, 2008
Two meetings of interest to close binaries took place during the reporting period: A full day session on short-period binary stars – mostly CV's – (Miloneet al. 2008) during the 2006 AAS Spring meeting in Calgary and the very broadly designed IAU Symposium No.
Rucinski, Slavek M.   +13 more
openaire   +2 more sources

Hypervelocity stars from young stellar clusters in the Galactic Centre [PDF]

open access: yes, 2017
The enormous velocities of the so called hypervelocity stars (HVSs) derive, likely, from close interactions with massive black holes, binary stars encounters or supernova explosions.
Capuzzo-Dolcetta, Roberto   +2 more
core   +2 more sources

Surveying Planetary Nebulae Central Stars for Close Binaries: Constraining Evolution of Central Stars Based on Binary Parameters

open access: yesGalaxies, 2018
The increase in discovered close binary central stars of planetary nebulae is leading to a sufficiently large sample to begin to make broader conclusions about the effect of close binary stars on common envelope evolution and planetary nebula formation ...
Todd Hillwig
doaj   +1 more source

Super slowly spinning stars in close binaries

open access: yesMonthly Notices of the Royal Astronomical Society: Letters, 2023
ABSTRACT Stars in short-period binaries typically have spins that are aligned and synchronized with the orbit of their companion. In triple systems, however, the combination of spin and orbital precession can cause the star’s rotation to evolve to a highly misaligned and sub-synchronous equilibrium known as a Cassini state. We identify a
Jim Fuller, Catherine Felce
openaire   +2 more sources

Computation of gravitational waves from inspiraling binary neutron stars in quasiequilibrium circular orbits : Formulation and calibration [PDF]

open access: yes, 2001
Gravitational waves from binary neutron stars in quasiequilibrium circular orbits are computed using an approximate method which we propose in this paper. In the first step of this method, we prepare general relativistic irrotational binary neutron stars
A. G. Wiseman   +53 more
core   +2 more sources

CLOSE BINARY SYSTEMS ON LATE EVOLUTIONARY STAGES

open access: yesOdessa Astronomical Publications, 2017
Observational and theoretical progress in investigations of close binary stars allow to understand the nature and evolution of many types of close binary systems containing peculiar components: Wolf-Rayet stars, white dwarfs neutron stars and black holes.
A. M. Cherepashchuk
doaj   +1 more source

Evidence for Prolonged Main Sequence Stellar Evolution of F Stars in close binaries [PDF]

open access: yes, 2001
Binary F stars exhibit large brightness anomaly, which is defined here as the difference between the absolute magnitude from the uvby photometry and the actual absolute magnitude of the star.
A. A. Suchkov   +16 more
core   +2 more sources

Close encounters of star–black hole binaries with single stars

open access: yesMonthly Notices of the Royal Astronomical Society, 2023
ABSTRACT Multibody dynamical interactions of binaries with other objects are one of the main driving mechanisms for the evolution of star clusters. It is thus important to bring our understanding of three-body interactions beyond the commonly employed point-particle approximation.
Taeho Ryu   +5 more
openaire   +4 more sources

Orbital Period Variations in HT Cas: Evidence for Additional Angular Momentum Loss and a High-eccentricity Giant Planet

open access: yesThe Astrophysical Journal, 2023
We present a timing study of the short-period eclipsing cataclysmic variable (CV) HT Cas. Based on new eclipse times derived from our photometric monitoring and archival optical data, combined with historical timings, spanning ∼42 yr, we detect a secular
Z.-T Han   +10 more
doaj   +1 more source

Evolution of Mass Functions of Coeval Stars through Wind Mass Loss and Binary Interactions [PDF]

open access: yes, 2015
Accurate determinations of stellar mass functions and ages of stellar populations are crucial to much of astrophysics. We analyse the evolution of stellar mass functions of coeval main sequence stars including all relevant aspects of single- and binary ...
de Mink, S. E.   +3 more
core   +2 more sources

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