The First Light Curve Modeling and Orbital Period Change Investigation of Nine Contact Binaries around the Short-period Cutoff [PDF]
Astronomical Journal, 2020 In this paper, we present the first light curve synthesis and orbital period change analysis of nine contact binaries around the short-period limit. It is found that all these systems are W-subtype contact binaries. One of them is a medium contact system
K. Li +7 more
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An 8.8 Minute Orbital Period Eclipsing Detached Double White Dwarf Binary [PDF]
Astrophysical Journal, 2020 We report the discovery of ZTF J2243+5242, an eclipsing double white dwarf binary with an orbital period of just 8.8 minutes, the second known eclipsing binary with an orbital period of less than 10 minutes.
K. Burdge +15 more
semanticscholar +1 more source
A 1201 s Orbital Period Detached Binary: The First Double Helium Core White Dwarf LISA Verification Binary [PDF]
Astrophysical Journal, 2020 We report the discovery of a 1201 s orbital period binary, the third shortest-period detached binary known. Sloan Digital Sky Survey J232230.20 + 050942.06 contains two He-core white dwarfs orbiting with a 27° inclination.
Warren R. Brown +6 more
semanticscholar +1 more source
Orbital Decay of Short-period Exoplanets via Tidal Resonance Locking [PDF]
Astrophysical Journal, 2021 A large fraction of known exoplanets have short orbital periods where tidal excitation of gravity waves within the host star causes the planets’ orbits to decay.
Linhao Ma, J. Fuller
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General relativistic orbital decay in a seven-minute-orbital-period eclipsing binary system [PDF]
Nature, 2019 General relativity1 predicts that short-orbital-period binaries emit considerable amounts of gravitational radiation. The upcoming Laser Interferometer Space Antenna2 (LISA) is expected to detect tens of thousands of such systems3 but few have been ...
K. Burdge +25 more
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Sporadic radio pulses from a white dwarf binary at the orbital period [PDF]
Nature AstronomyRecent observations have revealed rare, previously unknown flashes of cosmic radio waves lasting from milliseconds to minutes, with a periodicity of minutes to an hour.
I. D. Ruiter +16 more
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Light Curves and Period Analysis of Beta Lyrae Stars
The Astronomical Journal, 2023 We present the light-curve period analysis of 36 Beta Lyrae stars from the OMC Archive. We check the reference period of the sample by applying the phase dispersion minimization periodogram.
C. C. Cortés +3 more
doaj +1 more source
Orbital Decay in a 20 Minute Orbital Period Detached Binary with a Hydrogen-poor Low-mass White Dwarf [PDF]
Astrophysical Journal, 2019 We report the discovery of a detached double white dwarf binary with an orbital period of ≈20.6 minutes, PTF J053332.05+020911.6. The visible object in this binary, PTF J0533+0209B, is a ≈0.17 M⊙ mass white dwarf with a helium-dominated atmosphere ...
K. Burdge +16 more
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Reversible Relative Periodic Orbits
Journal of Differential Equations, 2002 The aim of this paper is to extend recently obtained results [\textit{B. Sandstede}, \textit{A. Scheel} and \textit{C. Wulff}, J. Nonlinear Sci. 9, 349--378 (1999; Zbl 0951.35014); \textit{C. Wulff}, \textit{J. S. W. Lamb} and \textit{I. Melbourne}, Ergodic Theory Dyn. Syst.
Lamb, JSW, Wulff, C
openaire +4 more sources
The cataclysmic variable orbital period gap: More evident than ever [PDF]
Astronomy & AstrophysicsRecently, large and homogeneous samples of cataclysmic variables identified by the Sloan Digital Sky Survey (SDSS) were published. In these samples, the famous orbital period gap, which is a dearth of systems in the orbital period range $ and the ...
M. Schreiber, D. Belloni, A. Schwope
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