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Asteroseismic effects in close binary stars [PDF]
, 2013 Turbulent processes in the convective envelopes of the sun and stars have been shown to be a source of internal acoustic excitations. In single stars, acoustic waves having frequencies below a certain cutoff frequency propagate nearly adiabatically and ...
Shaviv, Nir J., Springer, Ofer M.
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Transactions of the International Astronomical Union, 1985 Research on close binary systems has continued at a high level during the past triennium, although the rate of growth is noticeably slower – probably reflecting the cutbacks in funds to which many of us are subject. There have also been changes of emphasis within the field, which are commented on in the pages that follow.
A. H. Batten +12 more
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From dinuclear systems to close binary stars: Application to source of energy in the universe [PDF]
International Journal of Modern Physics E, 2018 The evolution of close binary stars in mass asymmetry (transfer) coordinate is considered. The conditions for the formation of stable symmetric binary stars are analyzed.
V. V. Sargsyan +3 more
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Super Slowly Spinning Stars in Close Binaries [PDF]
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
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COMMISSION 42: CLOSE BINARY STARS [PDF]
Proceedings 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.
S. M. Ruciński +13 more
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The origin and evolution of magnetic white dwarfs in close binary stars [PDF]
Nature Astronomy, 2021 The origin of magnetic fields in white dwarfs remains a fundamental unresolved problem in stellar astrophysics. In particular, the very different fractions of strongly (more than about a megagauss) magnetic white dwarfs in evolutionarily linked ...
M. Schreiber +4 more
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Surface magnetism of rapidly rotating red giants: Single versus close binary stars [PDF]
Astronomy & Astrophysics, 2022 According to dynamo theory, stars with convective envelopes efficiently generate surface magnetic fields, which manifest as magnetic activity in the form of starspots, faculae, flares, when their rotation period is shorter than their convective turnover ...
C. Gehan, P. Gaulme, Jie Yu
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Comparison of Gaia and Hipparcos parallaxes of close visual binary stars and the impact on determinations of their masses [PDF]
Publications Astronomical Society of Australia, 2021 Precise measurement of the fundamental parameters of stellar systems, including mass and radius, depends critically on how well the stellar distances are known.
M. Al-Wardat +3 more
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Close Binary Companions to APOGEE DR16 Stars: 20,000 Binary-star Systems Across the Color–Magnitude Diagram [PDF]
Astrophysical 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
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The Evolution of Massive Binary Stars [PDF]
Annual Review of Astronomy and Astrophysics, 2023 Massive stars play a major role in the evolution of their host galaxies and serve as important probes of the distant Universe. It has been established that the majority of massive stars reside in close binaries and interact with their companion stars ...
P. Marchant, J. Bodensteiner
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