-
Nebular abundances of southern symbiotic stars
We have calculated relative element abundances for a sample of 43 symbiotic stars. Helium abundances and the relative elemental abundances N/O, Ne/O, Ar/O were derived from new... -
Parameters of LMC detached eclipsing binaries
As a result of a careful selection of eclipsing binaries in the Large Magellanic Cloud using the OGLE-II photometric database, we present a list of 98 systems that are suitable... -
BH Vir spectra and photometry
High-resolution spectroscopic observations around the H{alpha} line and BVRI photometry from 1993 to 2003 of the eclipsing short-period RS CVn star BH Vir are presented.... -
CG Cygni light variations
We report new photometry of CG Cyg from 1998-2002. We also analyze published photometry collected since 1965. *********** * * Sorry, but the author(s) never supplied the... -
Catalogue of Algol type binary stars
A catalogue of (411) Algol-type (semi-detached) binary stars is presented in the form of five separate tables of information. The catalogue has developed from an earlier version... -
SV Cam BVR light curves in Feb. 2001 - March 2002
We present the analysis of new BVR light curves for the active star SV Cam. The Roche model with spotted areas on the hotter primary component fits satisfactorily all filter... -
V light curve of AzV 73
A CCD V light curve for the eclipsing binary star AzV 73 is presented. This new photometric observations are analysed together with previously published CCD I photometry from... -
SV Cam BVR light curves
New BVR light curves and times of minimum light for the short period RS CVn system SV Cam were analysed to derive the physical parameters of the system and the parameters of the... -
UBV minima for RU UMi
The near-contact system RU UMi with an F0 primary and a K5 secondary was observed in U, B and V wavelengths in May and July 1998, as well as in March, May and July 1999. Six new... -
TZ Boo & Y Sex orbital periods
TZ Boo and Y Sex are two A-type contact binaries. At the set, times of light minimum of the two stars were collected. -
DL Cygni ubr differential photometry
Relative photometry of DL Cygni versus GSC 3595-0200 in the instrumental system -
V436 Persei = 1 Persei byBV photometry
Outline of a project aimed at testing the presence of rapid line-profile variations in the atmospheres of hot components of close binaries is presented and its first results are... -
Photometry of W UMa
The physical properties of W UMa binary systems are revisited on the basis of the observational data published in the last decade and of the recent theoretical studies on... -
Eclipsing binary HU Tauri
The photometric elements of HU Tauri are derived from an analysis of its blue and visual light curves using the Wilson and Devinney (1971, ApJ 166, 605) light curve synthesis... -
Period changes in RT Lac
(no description available) -
Transits observed in OGLE 2001-2003
We present results of an extensive photometric search for planetary and low-luminosity object transits in the Galactic disk stars commencing the third phase of the Optical... -
Parameters of eclipsing binaries
An iterative method has been used to compute the geometric and physical parameters of 1048 eclipsing binary stars.
