Results 41 to 50 of about 2,626,294 (294)
Low Mass Ratio Contact Binary Systems HN UMa and II UMa - III [PDF]
Journal of Astronomy and Space Sciences, 2006 We present newly observed BVRI CCD light curves for low mass ratio contact binaries, HN UMa and II UMa. The absolute dimensions of these objects were obtained by applying the Wilson-Devinney program to previously published spectroscopic analysis and to ...
Woo-Baik Lee +3 more
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The structure of contact binaries [PDF]
Astronomy & Astrophysics, 2004 17 pages, 28 figures, accepted by A& ...
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Investigating the surface inhomogeneities of the contact binary SW Lacertae [PDF]
, 2011 Aims. We aim to reconstruct the first detailed surface maps of the W UMa-type contact binary system, SW ...
Hussain, G.A.J. +10 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
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Contact Binaries of Spectral Type O [PDF]
Symposium - International Astronomical Union, 1979 The eclipsing binaries UW CMa, AO Cas, and V729 Cyg have been systems of great interest for over fifty years. The light curves are complex and suffer significant changes on a time scale of months, but the primary attraction of these systems is that both components have O-type spectra; thus they present us with some of the few possibilities for direct ...
Kam-Ching Leung, Donald P. Schneider
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OBSERVED PROPERTIES OF CONTACT BINARY SYSTEMS
Odessa Astronomical Publications, 2017 A group of close eclipsing systems, which continues to pose a challenge in many subjects of modern astrophysics, is that of contact binaries. In this study, using the most recent observational data of a large sample of such systems, a review concerning ...
A. Kalimeris, H. Rovithis-Livaniou
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Basic physical properties of the low-temperature contact binary system V781 Tau and the near-contact binary system V836 Cyg [PDF]
, 2005 We present a detailed photometric study of the low-temperature contact binary V781 Tau, and the near-contact binary V836 Cyg. We have combined the parameters obtained from the light-curve analysis with those found by the spectral studies and we have ...
Kalomeni, Belinda +7 more
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Longitudinal associations between CBO contact and binary outcomes.
, 2016 Longitudinal associations between CBO contact and binary outcomes.
Imca S. Hensels (3181011) +6 more
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Light Curves and Roche Configurations of Near-Contact Binary AX Draconis [PDF]
Journal of Astronomy and Space Sciences, 2003 We completed the light curves of near-contact binary system AX Dra for 11 nights from March 2001 to May using the 61-cm reflector and VR filters at Sobaeksan Optical Astronomy Observatory.
Ho-Il Kim +4 more
doaj +1 more source
International Astronomical Union Colloquium, 1983 Abstract:Ultraviolet and X-ray surveys of the W Ursae Majoris type stars are reviewed. These systems exhibit extended coronas and transition regions that are confined close to the optically determined surfaces. Correlations of X-ray activity with period or rotational velocity indicate a turn-over or saturation of emission at the short periods or high ...
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