Results 21 to 30 of about 2,594,640 (261)

A Modified Kwee–Van Woerden Method for Eclipse Minimum Timing with Reliable Error Estimates

open access: yesGalaxies, 2020
The Kwee–van Woerden (KvW) method used for the determination of eclipse minimum times has been a staple in eclipsing binary research for decades, due its simplicity and the independence of external input parameters, which also makes it well-suited to ...
Hans J. Deeg
doaj   +1 more source

Photometric Study of a W UMa Type Contact Binary AH CNC [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2003
CCD photometric observations of a W UMa type contact binary AH Cnc were performed for ten nights from December 1998 to May 1999 using a PM512 CCD camera and BVI filters attached to the 61cm reflector at Sobaeksan Optical Astronomy Observatory.
Jae-Hyuck Youn   +6 more
doaj   +1 more source

Cosmological Evolution on Self-Tuned Branes and the Cosmological Constant [PDF]

open access: yes, 2001
We consider the cosmological evolution of a bulk scalar field and ordinary matter living on the brane world in the light of the constraints imposed by the matter dominated cosmological evolution and a small cosmological constant now.
Brax, Ph., Davis, A. C.
core   +2 more sources

A spatially resolved limb flare on Algol B observed with XMM-Newton [PDF]

open access: yes, 2003
We report XMM-Newton observations of the eclipsing binary Algol A (B8V) and B (K2III). The XMM-Newton data cover the phase interval 0.35 - 0.58, i.e., specifically the time of optical secondary minimum, when the X-ray dark B-type star occults a major ...
Doyle   +17 more
core   +1 more source

Light intensity, blood fraction, fasting and storage time affect blood biochemical metabolites in broiler chickens

open access: yesSemina: Ciências Agrárias, 2023
We determined the impacts of light intensity, blood fraction, fasting and storage time on glucose, cholesterol, triglycerides, aspartate aminotransferase (AST), alanine aminotransferase (ALT), and gamma-glutamyl transferase (GGT) concentrations in 140 ...
Lucas Wachholz   +9 more
doaj   +1 more source

Photoelectric Observations and Period Study of Eclipsing Binary VZ CEP [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1998
Photoelectric observations of the neglected eclipsing binary VZ Cep were made on four night during the observing season of 1984 at Sobaeksan Astronomy Observatory. The UBV light curves were secured incompletely with the gap in 0.35-0.75 phases.
Chun-Hwey Kim   +3 more
doaj  

Light Curves and Roche Configurations of Near-Contact Binary AX Draconis [PDF]

open access: yesJournal 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

Is KR Cygni a Triple Star System?

open access: yes, 2012
New multi-color UBVR light curves of the eclipsing binary KR Cyg were obtained in 2005. Photometric solutions were derived using the Wilson- Devinney method.
Esin Sipahi   +19 more
core   +1 more source

Superhumps in V348 Pup [PDF]

open access: yes, 2000
The eclipsing novalike cataclysmic variable star V348 Pup exhibits a persistent luminosity modulation with a period 6 per cent longer than its 2.44 hour orbital-period (Porb).
Haswell, Carole A.   +2 more
core   +3 more sources

A Period Study of the Close Binary V651 Cassiopeiae [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2000
All times of minimum light of V651 Cas, which is still less studied so far, were analyzed. From our analysis, it was found that the orbital period of the system may have varied in a periodic manner.
Chun-Hwey Kim, Jae Woo Lee
doaj  

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