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Speckle interferometry of nearby multiple stars. IV. Measurements in 2004 and new orbits
Weigelt, G.; Rastegaev, D. A.; Balega, Yu. Yu. +4 more
The results of speckle interferometric observations of 104 binary and 6 triple stars performed at the BTA 6 m telescope in 2004 October are presented. Nearby low-mass stars are mostly observed for the program, among which 59 there are new binaries recently discovered by the Hipparcos astrometric satellite. Concurrently with the diffraction-limited…
A globular cluster in the dwarf galaxy Sextans B
Sharina, M. E.; Puzia, T. H.; Krylatyh, A. S.
We present spectroscopic observations of a massive globular cluster in the dwarf irregular galaxy Sextans B, discovered by us on the Hubble Space Telescope Wide Field and Planetary Camera 2 (HST WFPC2) images. Long-slit spectra were obtained with the SCORPIO spectrograph on the 6-m telescope at the Special Astrophysical Observatory of the Russian …