Results 51 to 60 of about 2,742,038 (335)
Tidally trapped pulsations in binary stars [PDF]
Monthly notices of the Royal Astronomical Society, 2020 A new class of pulsating binary stars was recently discovered, whose pulsation amplitudes are strongly modulated with orbital phase. Stars in close binaries are tidally distorted, so we examine how a star’s tidally induced asphericity affects its ...
J. Fuller +3 more
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The cool brown dwarf Gliese 229 B is a close binary [PDF]
NatureOwing to their similarities with giant exoplanets, brown dwarf companions of stars provide insights into the fundamental processes of planet formation and evolution.
Jerry W. Xuan +78 more
semanticscholar +1 more source
Super slowly spinning stars in close binaries
Monthly 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
CLOSE BINARY SYSTEMS ON LATE EVOLUTIONARY STAGES
Odessa 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
THE CLOSE BINARY FRACTION OF DWARF M STARS [PDF]
The Astrophysical Journal, 2011 We describe a search for close spectroscopic dwarf M star binaries using data from the Sloan Digital Sky Survey (SDSS) to address the question of the rate of occurrence of multiplicity in M dwarfs. We use a template fitting technique to measure radial velocities from 145,888 individual spectra obtained for a magnitude-limited sample of 39,543 M dwarfs.
Clark, Benjamin M. +2 more
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Tidal dynamo in solar-like close binary stars
, 2022 Thermal convection is commonly believed to be the energy source of stellar or planetary dynamo. In this short paper we provide another possibility, namely large-scale tidal flow.
Wei, Xing
core +1 more source
The 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
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THE CLOSE BINARY PROPERTIES OF MASSIVE STARS IN THE MILKY WAY AND LOW-METALLICITY MAGELLANIC CLOUDS [PDF]
, 2013 In order to understand the rates and properties of Type Ia and Type Ib/c supernovae, X-ray binaries, gravitational wave sources, and gamma-ray bursts as a function of galactic environment and cosmic age, it is imperative that we measure how the close ...
M. Moe, R. Di Stefano
semanticscholar +1 more source
The Formation of Close Binary Stars [PDF]
Symposium - International Astronomical Union, 2001 I review the possible formation mechanisms of close binary stars. The formation of close binary systems is problematic in that there is no theory that does not encounter significant difficulties or unknowns. Fission does not appear to occur in stars.
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Inverse tides in pulsating binary stars [PDF]
Monthly notices of the Royal Astronomical Society, 2020 In close binary stars, the tidal excitation of pulsations typically dissipates energy, causing the system to evolve towards a circular orbit with aligned and synchronized stellar spins.
J. Fuller
semanticscholar +1 more source