Search Publications
New Runaway O-stars Based on Data from HIPPARCOS
Mdzinarishvili, T. G.
12 new runaway O-stars are identified using an analysis of their proper motions based on data from HIPPARCOS. The peculiar tangential and total transverse velocities of these stars are determined. A list of the observed runaway stars is given.
The BM Ori System. I. Anomaly in the Radial Velocity
Klochkova, V. G.; Vitrichenko, E. A.
The radial velocities of the star BM Ori are determined from spectra obtained by the HST and IUE satellites, as well as from spectra obtained with the BTA telescope. An analysis of this data shows that the radial velocities of the main star and its satellite experience an irregular positive shift by ∼20-30 km/s. This fact can only be interpreted i…
Absolute Calibration of the PL-Relations for the Classical Cepheids Based on the HIPPARCOS Parallaxes and the Distances of the Magellanic Clouds
Abrahamyan, H. V.
The zero points of the period-luminosity relations for the classical cepheids are calibrated based on the HIPPARCOS parallaxes of these stars. The calibrations are used to determine the distance moduli of the LMC and SMC: DMLMC = 18m.569 ± 0m.117 and DMSMC = 19m.070 ± 0m.119, respec…
Classical Cepheids and the Distances of HST Program Galaxies
Abrahamyan, H. V.
The distances of HST program galaxies are revised using the PL-relations we have obtained previously along with a different method from that employed by Freedman et al. On the average, the resulting distances to these galaxies have higher internal accuracies than those obtained before by others. In addition, we have used no corrections for metalli…