Search Publications
The structure of the AD diagram for the hyades cluster
Vereshchagin, S. V.; Reva, V. G.; Chupina, N. V.
The Hyades Cluster is used to analyze details of the AD-diagram method developed in our earlier works and applied to the corona of the Ursa Major stream. Hipparcos data are used to analyze the kinematics of the Hyades Cluster and determine its apex. Evidence for rotation of the cluster is presented.
A study of the X-ray pulsars X1845-024 and XTE J1858+034 based on INTEGRAL observations
Doroshenko, V. A.; Doroshenko, R. F.; Postnov, K. A. +2 more
We present an analysis of observations of the relatively unstudied X-ray pulsars X1845-024 and XTE J1858+034 carried out from May 2003 through November 2004 using the JEM-X and IBIS telescopes of the INTEGRAL international gamma-ray observatory at energies of 5-70 keV. The X-ray spectra and light curves of the pulsars are constructed. During the o…
Stellar subsystems of the galaxy NGC 2366
Tikhonov, N. A.; Galazutdinova, O. A.
Hubble Space Telescope archive data are used to perform photometry of stars in seven fields at the center and periphery of the galaxy NGC 2366. The variation of the number density of stars of various ages with galactocentric radius and along the minor axis of the galaxy are determined. The boundaries of the thin and thick disks of the galaxy are f…
Variations of the parameters of the dust envelope of the symbiotic star CH Cygni
Bogdanov, M. B.; Taranova, O. G.
The results of JHKLM photometry of the symbiotic star CH Cyg are presented. These demonstrate that, in Autumn 2006, the state of maximum near-IR brightness observed in 2003 2006 was replaced by a sharp brightness decline in all wavebands. One possible explanation is a sharp increase in the density of circumstellar dust envelope. The JHKLM photomet…
Coronal mass ejection of April 27, 2003, and evolution of the active region NOAA 10338 in the radio
Kardapolova, N. N.; Borisevich, T. P.; Peterova, N. G. +1 more
The results of a study of the coronal mass ejection (CME) of April 27, 2003, which was intrinsically associated with the active region NOAA 10338, are reported. Particular attention is paid to the initial stage of the event, which was accompanied by X-ray bursts of class C9.3 and C6.7, with the aim of determining the origin of CMEs. The energy sou…