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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 (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:
FileName Lrecl Records Explanations
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
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
Bytes Format Units Label Explanations
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
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.
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
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
Acknowledgements: Yuri Balega
(End) Patricia Vannier [CDS] 28-Jun-2004
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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