Results 1 to 10 of about 135 (58)
Velocity curve studies of spectroscopic binary stars V380 Cygni, V401 Cyg, V523 Cas, V373 Cas and V2388 Oph [PDF]
Journal of Astrophysics and Astronomy, 2009 Using measured radial velocity data of five double lined spectroscopic binary systems V380 Cygni, V401 Cyg, V523 Cas, V373 Cas and V2388 Oph, we find corresponding orbital and spectroscopic elements via the method introduced by Karami & Mohebi (2007) and Karami & Teimoorinia (2007). Our numerical results are in good agreement wit.
K. Karami, R. Mohebi
core +4 more sources
Long-term photometric study of the W UMa binary star V523 Cas [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 We present a long-term photoelectric and charge-coupled device (CCD) photometric study of the short-period W UMa star V523 Cas made from 1986 to 2000. The orbital-period changes and light-curve variations of the binary system are studied. 47 new times of minima are obtained from our data.
Xiaobin Zhang
exaly +4 more sources
Photometric Observations of the Contact Binary System V523 Cassiopeiae [PDF]
Journal of Astronomy and Space Sciences, 2010 A total of 583 observations (193 in Δb, 190 in Δv, 200 in Δr) for V523 Cas was made on 9 nights from September to December in 2008 using the 100 cm telescope with 2K CCD camera of the Chungbuk National University Observatory.
Chun-Hwey Kim, Yong-Sam Lee
exaly +2 more sources
A photometric study of the contact binaries V523 Cas and TY UMa [PDF]
Monthly Notices of the Royal Astronomical Society, 2000 Broad-band V and I photometry of the short-period W UMa-type contact binaries V523 Cas and TY UMa are reported. From the light curves, the system parameters have been determined and evidence is presented for extensive spot activity in both systems, with V523 Cas being the more active system.
Richard M McDermid, R W Hilditch
exaly +2 more sources
PHOTOMETRIC OBSERVATIONS OF THE CONTACT BINARY SYSTEM V523 CASSIOPEIAE [PDF]
Journal of Astronomy and Space Sciences, 2006 A total of 920 observations (230 in Delta B, 230 in Delta V, 230 in Delta R, 230 in Delta I) for V523 Cas were made on 5 nights from January 6 to 24 in 2003 using the 61cm telescope with 2K CCD camera of the Sobaeksan Optical Astronomy Observatory of ...
Chun-Hwey Kim, Yong-Sam Lee
exaly +2 more sources
Progress report on the monitoring active late-type stars in 2005/2006 and the analysis of V523 Cas [PDF]
Serbian Astronomical Journal, 2006 We present the light curve analysis of late-type binary V523 Cas for the season 2005. The spot has been revealed on the secondary. According to theoretical considerations, the spot appeared to be hotter than the surrounding photosphere and located at ...
M Zboril, G Djurasevic
exaly +2 more sources
LIGHT CURVE ANALYSIS OF CONTACT BINARY SYSTEM V523 CASSIOPEIAE [PDF]
Journal of Astronomy and Space Sciences, 2002 A total of 616 observations (308 in B, 308 in V) for V523 Cas was made on three nights from October 19 to 21 in 1999 using the 1.8m telescope with 2K CCD camera of the Bohyunsan Optical Astronomy Observatory of KAO.
J. H. Kim, J. H. Jeong
exaly +2 more sources
Light Curve Analysis of the Late Type Binary V523 Cassiopeiae [PDF]
Serbian Astronomical Journal, 2009 We present the analysis of V and R light curves of the late typecontact binary V523 Cas for the season of 2006. These observations make part of the monitoring program aimed at studying the long-term light curve variability in this system.
Latković, O. +2 more
doaj +3 more sources
THE SLOPE OF ΔM LIGHT CURVE DEPENDING UPON THE ITS LOCATION IN CCD FRAME [PDF]
Journal of Astronomy and Space Sciences, 2002 BV observations for V523 Cas were performed with 1.8m telescope and 2K CCD camera at Bohyunsan Optical Astronomy Observatory, Korea, on October 27, 1999. ∆m light curves for 11 comparison objects were made.
J. H. Jeong, I. S. Yim
doaj +1 more source
Kinematics of W UMa-type binaries and evidences on the two types of formation [PDF]
, 2004 The kinematics of 129 W UMa binaries is studied and its implications on the contact binary evolution is discussed. The sample is found to be heterogeneous in the velocity space that kinematically younger and older contact binaries exist in the sample ...
Bilir, S. +3 more
core +5 more sources