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X-ray galaxies selected from HyperLEDA database

Pulatova, N.; Tugay, A.; Zadorozhna, L. +4 more

We cross-matched the 4XMM-DR10 catalog with the HyperLEDA database and obtained a new sample of galaxies that contain X-ray sources. Excluding duplicate observations and false matches, we present a total of 7759 galaxies with X-ray sources. In the current work, we present general properties of the sample: namely the distribution in equatorial coor…

Astrometry of the Plates of the DWA Digitized with the MICROTEK SCANMAKER 9800XL TMA Scanner

Andruk, V.; Golovnya, V.; Yatsenko, A.

A detailed testing of the Microtek ScanMaker 9800XL TMA scanner aimed at large-scale plates (300 × 300 mm and larger) digitization has been undertaken. The evaluation of the accuracy of star image centering and darkening determined from the newly developed method in MIDAS/ROMAFOT environment has been carried out from the comparison of digitized im…

Gravi-Magnetic Rotators in Cataclysmic Binary Stars

Andronov, I. L.

Various astrophysical processes are reviewed, which take place in the classical, asynchronous and intermediate polars, as well as the results of their theoretical and observational investigations according to the international program ``Inter-Longitude Astronomy''. The uniqueness of the class of polars is the largest arbitrary influence of the mag…

LASCO SOHO Observations of Matter Flows in the Solar Corona

Delone, A. B.; Yakunina, G. V.; Porfir'eva, G. A.