J/other/AstBu/62.339 Speckle interferometry of nearby multiples (Balega+, 2007)
Speckle interferometry of nearby multiple stars.
IV. Measurements in 2004 and new orbits.
Balega I.I., Balega Yu.Yu., Maksimov A.F., Malogolovets E.V.,
Rastegaev D.A., Shkhagosheva Z.U., Weigelt G.
<Astrophys. Bull., 62, 339-351 (2007)>
=2007AstBu..62..339B 2007AstBu..62..339B
ADC_Keywords: Stars, double and multiple
Abstract:
The results of speckle interferometric observations of 104 binary and
6 triple stars performed at the BTA 6m 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=10.7yr) and the G2V-K2V G2V-K2V binary
GJ 9830 = HIP 116259 (P=15.7yr).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 93 180 Double star measurements
table2.dat 93 16 Triple star measurements
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See also:
I/239 : Hipparcos and Tycho Catalogues (ESA 1997)
I/237 : Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
J/A+A/385/87 : Speckle interferometry of nearby multiple stars (Balega+, 2002)
J/A+A/422/627 : Nearby multiple stars speckle interferometry (Balega+, 2004)
Byte-by-byte Description of file: table1.dat table2.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP ?=- HIP number
8- 21 A14 --- Name Name
23- 30 A8 --- Disc Discoverer designation
32- 41 A10 --- WDS WDS J2000 designation (HHMMm+DDMM)
43- 51 F9.4 yr Epoch Epoch of observation
53- 54 A2 --- Comp Component (default is VB)
56- 60 F5.1 deg theta Measured position angle
61 A1 --- n_theta [*] * for theta measurements with
the ±180° ambiguity
62- 65 F4.1 deg e_theta rms uncertainty on theta
68- 72 I5 mas rho Measured angular distance
74 I1 mas e_rho ?=- rms uncertainty on rho
76- 79 F4.2 mag Dmag ? Observed magnitude difference between
the components
80 A1 --- n_Dmag [*] * for bad seeing
82- 85 F4.2 mag e_Dmag ? rms uncertainty on Dmag
87- 89 I3 nm lambda Central wavelength of the filter used to make
the observation
90 A1 --- --- [/]
91- 93 I3 nm FWHM FWHM of the filter passband
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History:
From electronic version of the journal
References:
Balega et al., Paper I 2002A&A...385...87B 2002A&A...385...87B, Cat. J/A+A/385/87
Balega et al., Paper II 2004A&A...422..627B 2004A&A...422..627B, Cat. J/A+A/422/627
Balega et al., Paper III 2006BSAO...59...20B 2006BSAO...59...20B
(End) Patricia Vannier [CDS] 13-Oct-2008