Results 21 to 30 of about 2,626,294 (294)

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

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, Young-Woon Kang, Kyu-Dong Oh   +2 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

A contact binary satellite of the asteroid (152830) Dinkinesh. [PDF]

Nature
Abstract Asteroids with diameters less than about 5 km have complex histories because they are small enough for radiative torques (that is, YORP, short for the Yarkovsky–O’Keefe–Radzievskii–Paddack effect) 1 to be a notable factor in their evolution 2
Levison HF, Marchi S, Noll KS, Spencer JR, Statler TS, Bell JF, Bierhaus EB, Binzel R, Bottke WF, Britt D, Brown ME, Buie MW, Christensen PR, Dello Russo N, Emery JP, Grundy WM, Hahn M, Hamilton VE, Howett C, Kaplan H, Kretke K, Lauer TR, Manzoni C, Marschall R, Martin AC, May BH, Mottola S, Olkin CB, Pätzold M, Parker JW, Porter S, Preusker F, Protopapa S, Reuter DC, Robbins SJ, Salmon J, Simon AA, Stern SA, Sunshine JM, Wong I, Weaver HA, Adam C, Ancheta S, Andrews J, Anwar S, Barnouin OS, Beasley M, Berry KE, Birath E, Bolin B, Booco M, Burns R, Campbell P, Carpenter R, Crombie K, Effertz M, Eifert E, Ellis C, Faiks P, Fischetti J, Fleming P, Francis K, Franco R, Freund S, Gallagher C, Geeraert J, Gobat C, Gorgas D, Granat C, Gray S, Haas P, Harch A, Hegedus K, Isabelle C, Jackson B, Jacob T, Jennings S, Kaufmann D, Keeney BA, Kennedy T, Lauffer K, Lessac-Chenen E, Leonard R, Levine A, Lunsford A, Martin T, McAdams J, Mehall G, Merkley T, Miller G, Montanaro M, Montgomery A, Murphy G, Myers M, Nelson DS, Ocampo A, Olds R, Pelgrift JY, Perkins T, Pineau J, Poland D, Ramanan V, Rose D, Sahr E, Short O, Solanki I, Stanbridge D, Sutter B, Talpas Z, Taylor H, Treiu B, Vermeer N, Vincent M, Wallace M, Weigle G, Wibben DR, Wiens Z, Wilson JP, Zhao Y.   +118 more
europepmc   +7 more sources

The New Contact Binary GSC 2414-0797 [PDF]

, 2008
GSC 2414-0797 has a contact binary star type light curve, a 0.4 magnitude brightness variation with a period 0.3406 ...
Greimel, R., Drew, J.E., Robb, R.M., Vincent, J., Gonzalez-Solares, E., Henderson, H.   +5 more
core   +3 more sources

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, Chung-Uk Lee, Chun-Hwey Kim, Young Beom Kang, Jae-Rim Koo   +4 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, Chun-Hwey Kim, Chung-Uk Lee, Kyu-Dong Oh   +3 more
doaj   +1 more source

Activity of Contact Binaries [PDF]

International Astronomical Union Colloquium, 1983
We discuss observational results for indicators of elevated activity of contact (W UMa-type) binaries. References are made to results for fast rotating single and detached binary (MS) stars: they are discussed in the accompanying paper by Vilhu and Rucinski.
S.M. Rucinski, O. Vilhu, J. Kaluzny
openaire   +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

The Evolution of a Contact Binary [PDF]

International Astronomical Union Colloquium, 1971
Test calculations have been made to study the effects of central hydrogen depletion, luminosity exchange and mass exchange on the evolution of a contact binary. The Munich Henyey programme was adapted to allow the study of both components in a time-dependent way.The first model considered was that of LUCY (Ap. J.
J. Hazlehurst, E. Meyer-Hofmeister
openaire   +1 more source