J/other/RAA/24.I5013 2007-2023 positional meas. of 7 stars (Mitrofanova+, 2024)
Long-term Speckle Interferometric Monitoring of Binary Systems:
2007-2023 Positional Measurements and Orbits of Seven Objects.
Mitrofanova A., Dyachenko V., Beskakotov A., Balega Y., Maksimov A.,
Rastegaev D.
<Res. Astron. Astrophys., 24, 095013 (2024)>
=2024RAA....24i5013M 2024RAA....24i5013M (SIMBAD/NED BibCode)
ADC_Keywords: Interferometry ; Stars, double and multiple ; Positional data
Keywords: techniques: high angular resolution - (stars:) binaries: visual -
stars: fundamental parameters - stars: low-mass - stars: solar-type
Abstract:
The results of seventeen years of speckle interferometric monitoring
of seven objects (Chara 122Aa, GJ 3010, HIP 1987, GJ 3076, HIP 11253,
HIP 11352, and HIP 14929) are presented. Observational data were
obtained at the 6m Big Telescope Alt-azimuthal Special Astrophysical
Observatory of the Russian Academy of Science (BTA SAO RAS) from 2007
to the present. Analysis of previously published and new measurements
made it possible to construct completely new orbits for Chara 122Aa,
HIP 11253, and HIP 14929. The orbit of GJ 3076 cannot be constructed
accurately due to the large influence of the weights assigned to the
measurements. The resulting orbital solutions are classified based on
a grading scheme suggested by W.I. Hartkopf, B.D. Mason and C.E.
Worley; most orbits are "definitive" (Grade 1). The mass sums and
masses of components calculated by two independent methods using
Hipparcos and Gaia DR2 and DR3 parallaxes were compared for the
objects under study.
Description:
Speckle interferometric observations were carried out in
2007-2023 at the Big Telescope Alt-azimuthal (BTA) of the SAO RAS
utilizing a speckle interferometer (Maksimov et al.,
2009AstBu..64..296M 2009AstBu..64..296M).
Table 1 presents the observation log, as well as new and
previously published positional parameters and the magnitude
differences of the systems under study.
Objects:
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RA (2000) DE Designation(s)
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00 04 36.58 +42 05 33.0 Chara 122 (Aa) = ** CHR 122
00 08 53.92 +20 50 25.5 GJ 3010 = WDS J00089+2050AB
01 11 25.42 +15 26 21.5 GJ 3076 = WDS J01114+1526AB
02 24 51.15 +30 38 48.2 HIP 11253 = HD 14874
02 26 09.59 +34 28 10.0 HIP 11352 = HD 15013
03 12 32.91 +18 56 36.8 HIP 14929 = HD 19895
00 25 08.75 +48 02 50.6 HIP 1987 = HD 2057
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 145 244 The positional parameters and the magnitude
differences between components
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Obj Object designation
16- 26 F11.6 yr Epoch Epoch of observation (1)
28- 31 F4.2 m Diam Telescope diameter
33- 41 A9 nm Filter ? Bandpass or lambda/FWHM
43- 48 F6.2 deg PA ? Position angle
50- 53 F4.2 deg e_PA ? Error in PA
55- 60 F6.2 mas Sep ? Angular separation
62- 66 F5.2 mas e_Sep ? Error in Sep
68- 71 F4.2 mag Dmag ? Magnitude difference
73- 76 F4.2 mag e_Dmag ? Error in Dmag
78-145 A68 --- Ref Reference to the publication
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Note (1): In fraction of a Besselian year.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 07-Aug-2025