Results 71 to 80 of about 186,944 (198)
The Astrophysical Journal, 1981 Densities, corrected primary colors, minimum periods, inferred masses, luminosities, and specific angular momenta are computed from data on 37 W Ursae Majoris systems. A-type systems, having lower densities and angular momenta than the W-type systems, are shown to be evolved, and a new class of contact binary is identified, the OO Aquilae systems ...
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Photometry and spectroscopy of the contact binary GSC 04778-00152 [PDF]
, 2008 Photometric and spectroscopic data of the southern contact binary GSC 04778–00152 are presented. Six new times of minimum are listed. For modelling purposes, we provide UBVRI phase diagrams of the contact binary with the contribution of the nearby ...
Troncoso, P. +17 more
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Theories of Contact Binary Stars [PDF]
Symposium - International Astronomical Union, 1980 We review and contrast two current theories for the structure of contact binary stars: discontinuity theory and thermal relaxation oscillation theory. We find that the two theories are complementary with the crucial theoretical issue to be resolved being the secular stability of the temperature inversion layer. Critical observational tests remain to be
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Lattice Boltzmann phase-field modeling of thermocapillary flows in a confined microchannel
, 2014 To understand how thermocapillary forces manipulate the droplet motion in a confined microchannel, a lattice Boltzmann phase-field model is developed to simulate immiscible thermocapillary flows with consideration of fluid–surface interactions.
Valocchi, Albert J. +3 more
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Attributing the O’Connell Effect in Contact Binaries to a Cooling Mass-transfer Stream
The Astrophysical JournalContact binaries are very short-period systems that are continuously interacting by transferring mass and energy. Obtaining large, statistical samples of contact binaries from photometric surveys can put valuable constraints on the various processes ...
Matthias Fabry, Andrej Prša
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The Final Step in Contact Binary Star Formation
, 2023 A binary star is a system that contains two stars orbiting each other. A contact binary is a binary star whose component stars are so close that they share the same atmosphere (see Figure 1).
Phippen, Henry +2 more
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The Astrophysical JournalTheoretical investigations predict a minimum mass ratio of about 0.085–0.095 for contact binaries. If the mass ratio is below the critical value, a tidal instability occurs, forcing the stars to merge into a single object.
Xiaobin Zhang +3 more
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The structure equations of contact binaries [PDF]
Astronomy & Astrophysics, 2002 The structure equations of contact binaries are discussed. An equation for the transfer of mass between the com- ponents is derived. Serious uncertainties concern only the transfer of energy. They are expressed as unknown functions. An evolution code for contact binaries is presented.
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Superconfinement tailors fluid flow at microscales.
, 2015 Understanding fluid dynamics under extreme confinement, where device and intrinsic fluid length scales become comparable, is essential to successfully develop the coming generations of fluidic devices.
Aarts, Dirk G. +16 more
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The Astrophysical JournalWe present archival Hubble Space Telescope (HST) and JWST ultraviolet through near-infrared time series photometric observations of a massive minimal-contact binary candidate in the metal-poor galaxy Wolf–Lundmark–Melotte ( Z = 0.14 Z _⊙ ).
Maude Gull +17 more
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