Search Publications
Early-type W UMa contact binary system: New data on V535 Ara
Özkardeş, B.; Erdem, A.
This paper presents the results of spectroscopic and photometric observations of the early-type W UMa system V535 Ara. New high-resolution spectra were taken at the Mt. John University Observatory in 2007. Radial velocities and spectroscopic orbital elements of the system were determined by applying KOREL spectral disentangling. The resulting orbi…
A critical analysis of three near-infrared photometric methods of estimating distances to cataclysmic variables
Gariety, Michael J.; Ringwald, F. A.
A critical analysis of three methods of estimating distances to cataclysmic variables (CVs) is performed. These methods, by Ak et al., Beuermann, and Knigge, all use near-infrared ( JHK or Ks) magnitudes and the Barnes-Evans relation. We compare all three methods to distances measured by trigonometric parallax by Thorstensen, with Hubbl…
New eccentric eclipsing binary in triple system: SY Phe
Zasche, P.
Analyzing available photometry from Hipparcos, ASAS, Pi of the sky and Super WASP, we found that the system SY Phe is a detached eclipsing binary with similar components and orbital period about 5.27089 days. It has a slightly eccentric orbit, however the apsidal motion is probably very slow. The system undergoes an additional photometric variatio…
Absolute properties of the neglected eclipsing B-type binary HD 194495
Çakırlı, Ömür; Dervişoğlu, Ahmet; Sipahi, Esin +1 more
We present the results of the high-resolution spectroscopic observations of the neglected binary system HD 194495 (B3 IV-V+B4 V). A combined analysis of three different photometric data set ( Tycho B T and V T photometry, H p-band data of Hipparcos and V-band data of ASAS3 photometry) and radial velocities indicate…
Neglected reverse Algol system: WZ Hor
Erdem, A.; Sürgit, D.
This paper presents the first analysis of spectroscopic and photometric observations of the eclipsing binary star WZ Hor. Observations of the system were made at the Mt. John University Observatory in 2007. Since the light contribution of the secondary component was merely 2-3% of the total light of the system in the optical wavelengths, the radia…