J/A+A/422/627 Nearby multiple stars speckle interferometry (Balega+, 2004)
Speckle interferometry of nearby multiple stars. II.
Balega I., Balega Y.Y., Maksimov A.F., Pluzhnik E.A., Schertl D.,
Shkhagosheva Z.U., Weigelt G.
<Astron. Astrophys. 422, 627 (2004)>
=2004A&A...422..627B 2004A&A...422..627B (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple
Keywords: stars: binaries (including multiple): close -
techniques: interferometric
Abstract:
This paper is a continuation of diffraction-limited speckle
interferometry of binary and multiple stars carried out at the 6-m
telescope of the Special Astrophysical Observatory in Zelenchuk. The
program has concentrated on nearby (π>10mas) close binaries
discovered or measured during the Hipparcos mission. Here, we present
132 measurements of relative positions and magnitude differences for
99 pairs and 8 measurements for 6 triple systems. 54 entries in the
paper are new Hipparcos binaries. New triple systems with late-type
dwarf components, discovered in the course of observations, are HIP
8533 and HIP 25354.
Description:
The observations presented here were obtained in October 1999 using
the new speckle camera developed in 1998.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 92 132 Binary star measurements
table2.dat 94 24 Triple star measurements
table3.dat 28 32 Absolute magnitudes and spectral types of binary
star components
tables.tex 129 262 LaTeX version of the tables
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See also:
J/A+AS/140/287 : 1992-1997 binary star speckle measurements (Balega+, 1999)
J/A+AS/105/503 : Binary star speckle measurements (Balega+ 1994)
J/A+A/385/87 : Nearby multiple stars speckle interferometry (Balega+, 2002)
J/A+A/366/868 : Binary speckle measurements at Calar Alto. I. (Docobo+, 2001)
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- 9 A2 --- Comp Component of the triple star
11- 23 A13 --- Name Name/Catalog No
26- 37 A12 --- Disc Discoverer designation
39- 48 A10 --- WDS WDS name, based in J2000 position
51- 55 F5.4 yr Epoch-1999 Epoch of observation in fractional Besselian
year (1999.0+)
57- 61 F5.1 deg theta Position angle for the secondary relative
to the primary
62 A1 --- n_theta [*] Note on theta (1)
64- 66 F3.1 deg e_theta rms uncertainty on theta
68- 73 F6.1 mas rho Angular distance between components
75- 78 F4.1 mas e_rho rms uncertainty on rho
80- 83 F4.2 mag Deltam ? Magnitude difference in the "Filter" band
84 A1 --- u_Deltam Uncertainty flag on Deltam
86- 89 F4.2 mag e_Deltam ? rms uncertainty on Deltam
91- 92 A2 --- Filt [RVG' ] Filter
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Note (1): The formal errors of relative position measurements, obtained
from least-squares fitting, are 0.3-0.5° and 1-2mas for theta and
rho measurements, respectively. For well-studied binaries, observed as
standard stars for speckle interferometry, the root mean square
deviation of residuals of our measures to the ephemeris was found to
be 0.5° in position angle and 2.5mas in separation. For 27 binary
systems the 180° position angle ambiguity was not resolved. These
cases are marked with an asterisk.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP HIP number
8- 11 F4.1 mag MAGA Absolute magnitude of the primary
13- 16 F4.1 mag MAGB Absolute magnitude of the secondary
18- 19 A2 --- Filt [RGV'] Filter
21- 22 A2 --- SpTypeA Spectral type of the primary
24- 25 A2 --- SpTypeB Spectral type of the secondary
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Acknowledgements: Yuri Balega
(End) Patricia Vannier [CDS] 28-Jun-2004