Search Publications
Short gamma-ray bursts in the SPI-ACS INTEGRAL experiment
Minaev, P. Yu.; Pozanenko, A. S.; Loznikov, V. M.
We analyze short-duration gamma-ray bursts (T90<2 s) recorded in the SPI-ACS experiment of the INTEGRAL observatory. We found an extended emission in the averaged light curve of both short-duration gamma-ray bursts and unidentified short-duration events. We show that the fraction of short-duration gamma-ray bursts among all the gamma…
Orbits of new Hipparcos binaries: III
Balega, Yu. Yu.; Balega, I. I.; Malogolovets, E. V.
We present apparent orbits and fundamental parameters of three pairs of early M-type dwarfs. The orbital elements are determined from speckle interferometric observations at the 6-m BTA telescope of the Special Astrophysical Observatory. The orbits of two pairs, HIP39402 and HIP 104565 are built for the first time. The orbit of HIP106972 is revise…
Kinematics of high proper motion stars determined from high resolution spectra in ground-based ultraviolet
Klochkova, V. G.; Tavolganskaya, N. S.
Radial velocities for 15 stars with high proper motions were measured as a result of spectral observations, conducted with the NES echelle spectrograph of the 6-m BTA telescope in the wavelength range of 3550–5100 Å with a spectral resolution of R=60000. The standard deviation of the measured velocity does not exceed σ ≤ 0.9 km/s for the stars wit…