Search Publications
Spectrophotometry of speckle binary stars. III
Al-Wardat, M. A.
Spectrophotometric observations of a third set consisting of 11 stars of speckle interferometric binaries are presented. Observations covered the range 3700-8400 Å with a resolution of 18 Å. Results are presented in the form of the measured flux corrected for atmospheric extinction in the units of erg/cm2·s·sÅ, with no corrections for i…
Reduction of the binary stars Δm measurements, obtained with the speckle interferometer of BTA of SAO RAS, into the standard photometric system
Zhuchkov, R. Ya.
For magnitude difference, measured with the speckle interferometer of the 6m telescope of SAO RAS, corrections for transformation from interferometer's photometric system into standard Johnson-Cousins V R I bands are calculated. The reduction accuracy is 0.01m - 0.02m. To determine the correction one has to know the magnitude…
Spectrophotometry of speckle binary stars III
Al-Wardat, M. A.
Spectrophotometric observations of a third set consisting of 11 stars of speckle interferometric binaries are presented. Observations covered the range 3700-8400 Å, with a resolution of 18 Å. Results are presented in the form of the measured flux corrected for atmospheric extinction in the units of erg/cm2\cdot s \cdot Å, with no correc…
A new list of effective temperatures of chemically peculiar stars. III
Glagolevskij, Yu. V.
Our system of effective temperatures (paper II) is analysed by way of comparison with the Hipparcos data and the correctness of the methods of their determination is verified. With the aid of these temperatures absolute bolometric magnitudes of more than 220 CP stars have been estimated from the parameters of multicolour β and c1 photom…
Spectrophotometry of speckle binary stars
Al-Wardat, M. A.
Spectrophotometric observations of 20 speckle interferometric binary stars in the wavelength range 3640-8340 Å, with a resolution of 18 Å, are presented in the form of the measured flux corrected for atmospheric extinction in the units of erg/cm2\cdot s \cdot Å, with no corrections for interstellar reddening. B,V, and R magnitudes, B-V …
Spectrophotometry of speckle binary stars II
Al-Wardat, M. A.
Spectrophotometric observations of a second set consisting of 15 stars of speckle interferometric binaries are presented. Observations covered the range 3700-8100 Å, with a resolution of 18 Å. Results are presented in the form of the measured flux corrected for atmospheric extinction in the units of erg/cm2\cdot s \cdot Å, with no corre…
Age variation of helium abundance in He-rich stars.
Glagolevskij, Yu. V.
Investigations of the He abundance variation depending on the age of He-rich stars have been continued. A comparison of the Hipparcos satellite absolute magnitudes and lg g with data obtained previously from the β parameters of multicolour photometry has shown good agreement (Gomez et al., 1998). A critical revision of all previous data, using the…