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

被引：62

作者：

Balega, I. I. ^{[1
]}

Balega, Yu. Yu. ^{[1
]}

Maksimov, A. F. ^{[1
]}

Malogolovets, E. V. ^{[1
]}

Rastegaev, D. A. ^{[1
]}

Shkhagosheva, Z. U. ^{[1
]}

Weigelt, G. ^{[2
]}

机构：

[1] Russian Acad Sci, Special Astrophys Observ, Nizhnii Arkhyz 369167, Russia

[2] Max Planck Inst Radioastron, D-5300 Bonn, Germany

来源：

ASTROPHYSICAL BULLETIN | 2007年 / 62卷 / 04期

关键词：

D O I：

10.1134/S1990341307040050

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 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 HD210211 = HIP 109281 (P = 10.7 yr) and the G2V-K2V G2V-K2V binary GJ 9830 = HIP 116259 (P = 15.7 yr).

引用

页码：339 / 351

页数：13

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