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Classification of close binary stars using recurrence networks. [PDF]
Chaos: An Interdisciplinary Journal of Nonlinear Science, 2019 Close binary stars are binary stars where the component stars are close enough such that they can exchange mass and/or energy. They are subdivided into semidetached, overcontact, or ellipsoidal binary stars.
Sandip V. George, R. Misra, G. Ambika
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Dynamical origin of S-type planets in close binary stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 Understanding the origin of planets that have formed in binary stars is fundamental to constrain theories of binary and planet formation. The planet occurrence rate in binaries with a separation $\lesssim 50$ AU is only $\sim$ one third that of wider ...
Giacomo Fragione
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The White Dwarf Binary Pathways Survey – IV. Three close white dwarf binaries with G-type secondary stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 Constraints from surveys of post common envelope binaries (PCEBs) consisting of a white dwarf plus an M-dwarf companion have led to significant progress in our understanding of the formation of close white dwarf binary stars with low-mass companions. The
Steven Parsons +2 more
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Microlensing of close binary stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 The gravity due to a multiple-mass system has a remarkable gravitational effect: the extreme magnification of background light sources along extended so-called caustic lines. This property has been the channel for some remarkable astrophysical discoveries over the past decade, including the detection and characterisation of extra-solar planets, the ...
Nicholas Rattenbury
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Radial Velocity Studies of Close Binary Stars. VI. [PDF]
The Astronomical Journal, 1999 Radial velocity measurements and sine-curve fits to the orbital velocity variations are presented for the sixth set of 10 close binary systems: SV Cam, EE Cet, KR Com, V410 Cyg, GM Dra, V972 Her, ET Leo, FS Leo, V2388 Oph, and II UMa.
S. Rucinski +12 more
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CLOSE-IN STELLAR COMPANIONS IN CLOSE BINARY STARS
Publications of the Korean Astronomical Society, 2015 Close binary stars are so close that one component has an effect on the evolution of the other. But how do they form and evolve? This is an unsolved problem. One speculation is that the binary is a part of a hierarchical triple and its orbit shrinks due to interaction with the third component.
FIRST M. WENPING LIAO +3 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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Disks in close binary stars [PDF]
Astronomy & Astrophysics, 2021 Context. Close binaries (abin ≤ 20 au) are known to harbor planets, yet planet formation is unlikely to succeed in such systems. Studying the dynamics of disks in close binaries can help to understand how those planets could have formed. Aims. We study the impact that numerical and physical parameters have on the dynamics of disks in close binaries. We
Jordan L. M. +3 more
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