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Scientific achievements, Metagalaxy sector

For the first time the abundance of iron is determined in gas components of 10 blue compact galaxies. An average excess of oxygen versus iron is [O/Fe]=0.34 which is typical for stars of the galactic haloes. The ratios of the N/O, Ne/O, S/O, Ar/O abundances are constant for the oxygen abundances within 7.2 (In cooperation with MAO NAS Ukraine and University of Virginia, USA)

Within the "Big Trio" program (BTA - RATAN-600 - VLA) optical identifications of the first and second subsamples (40 objects) from the RATAN-600 "Cold" survey catalogue of radiosources with steep spectra have been finished at the 6-m BTA telescope. Multicolor photometry of one of the objects from the catalogue, RC 2036+0451, showed the presence of the La line in the B-band that corresponds to the redshift Z~2.7. The 2D spectroscopy method at the BTA telescope allowed to optically identify a radio object RC 2036+0451 with a giant radiostructure (about 1 angular minute). The object proved to be a quasar at Z~3 having the largest linear size of the radiostructure (1MPc) known up to date. The expected X-ray flux from Compton scattering of the 3K background relic photons on the relativistic electrons of the extended components of this radiosource was evaluated for different cosmological models.

The distances to nearby galaxies measured with BTA were used to study the velocity field in the Local system of galaxies. A new solution is obtained for the velocity and the direction of the solar apex, Galactic center, and the centroid of the Local Group. The anisotropy of the peculiar velocity field relative to the direction towards the center and poles of Local Superclaster was discovered. The most detailed and comprehensive map of the distribution of visible matter in the volume with a diameter of 15Mpc was constructed.

The spectra of 400 radiosources from the RC catalogue for the epoch 1988.0 in the wavelength range of 3.9-31.0cm are constructed (the median value of fluence 70 mJy). For 100 most faint of them (30 mJy) the spectra had been built for the first time, while for 130 of them the spectra were refined.

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