Speckle Interferometry of Nearby Multiple Stars. IV. Measurements in 2004 and New Orbits

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dc.creatorBalega, I. I.
dc.creatorBalega, Yu. Yu.
dc.creatorMaksimov, A. F.
dc.creatorMalogolovets, E. V.
dc.creatorRastegaev, D. A.
dc.creatorShkhagosheva, Z. U.
dc.creatorWeigelt, G.
dc.date2007-12-17
dc.date.accessioned2026-07-07T12:53:20Z
dc.date.available2026-07-07T12:53:20Z
dc.descriptionThe 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 position measurements we obtained 154 brightness ratio measurements of binary and multiple star components in different bands of the visible spectrum. New, first-resolved binaries are the symbiotic star CH Cyg with a weak companion at 0.043'' separation and the pair of red dwarfs, GJ 913 = HIP 118212. In addition, we derived the orbital parameters for two interferometric systems: the CN-giant pair HD 210211 = HIP 109281 (P=10.7 yr) and the G2V-K2V binary GJ 9830 = HIP 116259 (P=15.7 yr).
dc.description11 pages, 2 figures, accepted to Astrophysical Bulletin
dc.identifierhttps://arxiv.org/abs/0712.2573
dc.identifierhttp://arxiv.org/abs/0712.2573
dc.identifierAstrophys.Bull.62:339-351,2007
dc.identifierdoi:10.1134/S1990341307040050
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/223586
dc.subjectAstrophysics
dc.titleSpeckle Interferometry of Nearby Multiple Stars. IV. Measurements in 2004 and New Orbits
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