CCD Photometry of Contact Binary WZ Cephei [PDF]
Journal of Astronomy and Space Sciences, 2008 We present the full BVR light curves and five times of minima of WZ Cep to provides a complete photometric solution and to confirm the long term variation of the light curves.
Woo-Baik Lee +2 more
doaj +3 more sources
Friction and wear with a single-crystal abrasive grit of silicon carbide in contact with iron base binary alloys in oil: Effects of alloying element and its content [PDF]
, 1979 Sliding friction experiments were conducted with various iron-base binary alloys (alloying elements were Ti, Cr, Mn, Ni, Rh, and W) in contact with a rider of 0.025-millimeter-radius, single-crystal silicon carbide in mineral oil.
Buckley, D. H., Miyoshi, K.
core +2 more sources
Low Mass Ratio Contact Binary V410 Aur and V776 Cas - II [PDF]
Journal of Astronomy and Space Sciences, 2005 New BVR CCD light curves of the low mass ratio contact binaries, V410 Aur and V776 Cas, were observed with the 61 cm reflector and a 2K CCD camera at the Sobaeksan Astronomical Observatory.
Kyu-Dong Oh, Chun-Hwey Kim, Ho-iL Kim
doaj +1 more source
Small Mass Ratio Contact Binary GR Vir and HV Aqr [PDF]
Journal of Astronomy and Space Sciences, 2004 The absolute dimensions of low mass contact binary, GR Vir and HV Aqr were obtained using WD program from the published spectroscopic and photometric observational data.
Kyu-Dong Oh +4 more
doaj +1 more source
Photometric Solutions of W UMa Type Stars: GSC2576-0319 and GSC2584-1731 [PDF]
Journal of Astronomy and Space Sciences, 2006 High-precision photometric observations were performed in BVI bandpasses using 1m robotic telescope at Mt. Lemmon Observatory for two binary stars, which are reclassified as W UMa-type systems from ROTSE(Robotic Optical Transient Search Experiment ...
Chung-Uk Lee, Jae Woo Lee, Chun-Hwey Kim
doaj +1 more source
Determinations of its Absolute Dimensions and Distance by the Analyses of Light and Radial-Velocity Curves [PDF]
Journal of Astronomy and Space Sciences, 2004 We completed the light curves of the contact binary CK Boo for 13 nights from June to July in 2004 using the 1-m reflector and BVR filters at Mt. Lemmon Optical Astronomy Observatory, and determined four new times of minimum light (three timings for ...
Jae Woo Lee +4 more
doaj +1 more source
Small Mass Ratio Contact Binary [PDF]
Journal of Astronomy and Space Sciences, 2003 The contact binary system has been classified in five different types according to their physical properties.
Kyu-Dong Oh +3 more
doaj +1 more source
Determinations of its Absolute Dimensions and Distance by the Analyses of Light and Radial-Velocity Curves of the Contact Binary -I. V417 Aquilae [PDF]
Journal of Astronomy and Space Sciences, 2004 New photometric and spectroscopic solutions of W-type overcontact binary V417 Aql were obtained by solving the UBV light curves of Samec et al. (1997) and radial-velocity ones of Lu & Rucinski (1999) with the 2003 version of the Wilson-Devinney binary ...
Jae Woo Lee +3 more
doaj +1 more source
Statistical Survey for the Physical Characteristic of Near Contact Binary(NCBs) [PDF]
Journal of Astronomy and Space Sciences, 2005 The absolute dimensions and orbital elements of 66 near contact binaries, collected from literatures, have been analyzed to investigate the physical characteristics of the near contact binaries as well as co-relations among physical parameters.
Kyu-Dong Oh
doaj +1 more source
Detection and Seismic Study of Gravity and Rossby Mode Pulsations in Four Contact Binaries
The Astrophysical Journal, 2023 We report the detection of gravity ( g ) and Rossby ( r ) mode pulsations of four short-period eclipsing binaries, KIC 5439790, KIC 7501230, KIC 9350889, and KIC 9453192 based on the 4 yr Kepler high-precision photometry.
X. B. Zhang +3 more
doaj +1 more source