Results 41 to 50 of about 225,642 (319)
International Astronomical Union Colloquium, 1983 Abstract:Ultraviolet and X-ray surveys of the W Ursae Majoris type stars are reviewed. These systems exhibit extended coronas and transition regions that are confined close to the optically determined surfaces. Correlations of X-ray activity with period or rotational velocity indicate a turn-over or saturation of emission at the short periods or high ...
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Coalescing binary neutron stars [PDF]
Classical and Quantum Gravity, 1999 Coalescing compact binaries with neutron star or black hole components provide the most promising sources of gravitational radiation for detection by the LIGO/VIRGO/GEO/TAMA laser interferometers now under construction. This fact has motivated several different theoretical studies of the inspiral and hydrodynamic merging of compact binaries.
Stuart L. Shapiro, Frederic A. Rasio
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Where Are the Binary Source Gravitational Microlensing Events? II [PDF]
CNU-A&SS-05/08, 1998 Currently, 6 candidate binary lens events have been reported, while only a single candidate binary source event has been reported. To account for the rarity of binary source events, Dominik pointed out that for a typical binary source event the separation between the component source stars is very large, resulting in large difference in impact ...
arxiv +1 more source
Be Stars as Interacting Binaries [PDF]
Symposium - International Astronomical Union, 1982 At the last IAU Symposium on Be stars held in Bass River, MA in 1975, several of us (including P. Harmanec, M. Plavec, R.S. Polidan, and myself) suggested that Be stars are mass transfer binaries and represent the higher mass counterparts to the familiar Algol systems.
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The Astrophysical Journal, 2023 The mergers of neutron star–neutron star and neutron star–black hole binaries (NSBHs) are the most promising gravitational wave (GW) events with electromagnetic (EM) counterparts.
Chayan Chatterjee +5 more
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International Astronomical Union Colloquium, 1982 AbstractSome of tile most unique experimental features of the source SS433 are outlined as well as some implications of the theoretical models of this source.
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Most EL CVn systems are inner binaries of hierarchical triples [PDF]
, 2020 In spite of their importance for modern astronomy, we do not fully understand how close binary stars containing at least one white dwarf form from main sequence binary stars. The discovery of EL CVn binaries, close pre-white dwarfs with A/F main sequence star companions, offers now the unique possibility to test models of close compact binary star ...
arxiv +1 more source
Asteroseismology of binary stars and a compilation of core overshoot and rotational frequency values of OB stars [PDF]
, 2013 After a brief introduction into the asteroseismic modelling of stars, we provide a compilation of the current seismic estimates of the core overshooting parameter and of the rotational frequency of single and binary massive stars. These important stellar parameters have meanwhile become available for eleven OB-type stars, among which three ...
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Hypervelocity binary stars: smoking gun of massive binary black holes [PDF]
Astrophys.J.666:L89-L92,2007, 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. In this paper, we demonstrate that binary stars can be ejected out of the Galactic center with velocities up ...
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Dynamically Forming Extremely Low-mass White Dwarf Binaries in Wide Orbits
The Astrophysical Journal, 2023 The detection of a 0.2 M _⊙ extremely low-mass white dwarf (EW) in a wide orbit ( P _orb ≈ 450 days) with a 1.1 M _⊙ main-sequence companion, KIC 8145411, challenges our current understanding of how EWs form. The traditional channel for EW formation, via
Ambreesh Khurana +2 more
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