Results 71 to 80 of about 48,149 (293)
Modelling of W UMa-type variable stars
South African Journal of Science, 2009 W Ursae Majoris (W UMa)-type variable stars are over-contact eclipsing binary stars. To understand how these systems form and evolve requires observations spanning many years, followed by detailed models of as many of them as possible.
P. Skelton, D. Smits
doaj
The Astrophysical JournalCY Ari and IK Lyn are two eclipsing binary systems that share the same spectral type but exhibit significantly different metallicities. Based on the Wilson–Devinney (W-D) method, the first photometric solutions are obtained by analyzing the new complete ...
Hu-Shan Xu +5 more
doaj +1 more source
Photometric study of the over-contact binary star GSC 3822-1056 [PDF]
Astronomy & Astrophysics, 2003 Here we present the first Johnson-Cousins VRC light curves of the over-contact binary star GSC 3822-1056. A period study and the light curve solution are also given. An extremely high rate of period increase (+11: 6s =century) was found. The origin of this period change can be: (i) partly covered light-time eect due to the orbital motion around the ...
Sz. Csizmadia +2 more
openaire +1 more source
Advanced Functional Materials, EarlyView.Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida +16 more
wiley +1 more source
Contact tracing of binary stars: Pathways to stellar mergers (online data)
, 2023 Jan Henneco +2 more
openalex +2 more sources
Physical Parameters of 11,100 Short-period ASAS-SN Eclipsing Contact Binaries
The Astrophysical Journal Supplement SeriesStarting from more than 11,200 short-period (less than 0.5 days) EW-type eclipsing binary candidates with the All-Sky Automated Survey for Supernovae V -band light curves, we use the Markov Chain Monte Carlo algorithm and neural networks to obtain the ...
Xu-Zhi Li +6 more
doaj +1 more source
MASS TRANSFER IN ECLIPSING BINARY STARS
Odessa Astronomical Publications, 2017 Analysis of the properties of the eclipsing binary stars shows, that the stream-like mechanism of the mass transfer switches on at a contact evolutionary stage, preceding to a stage of binaries with a subgiant.
V. G. Karetnikov +2 more
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CCD Photometry of Low Mass Ratio Contact Binary FP Boo - IV [PDF]
Journal of Astronomy and Space Sciences, 2009 We present new B, V, and R CCD photometric light curves for the low mass ratio contact binary FP Boo. A new photometric solution and absolute physical dimensions of the system were derived by applying the Wilson-Devinney program to our observed light ...
Kyu-Dong Oh, Woo-Baik Lee
doaj +1 more source
Mass-ratio distribution of contact binary stars [PDF]
, 2022 Milan Pešta, Ondřej Pejcha
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Advanced Functional Materials, EarlyView.Electric control of magnetic tunnel junctions offers a path to drastically reduce the energy requirements of the device. Electric field control of magnetization can be realized in a multitude of ways. These mechanisms can be integrated into existing spintronic devices to further reduce the operational energy.
Will Echtenkamp +7 more
wiley +1 more source