J/AJ/131/2681 Orbits for three visual binaries (Tamazian+, 2006)
Orbits and differential photometry for visual binaries A 1529, HU 610, and
COU 2031.
Tamazian V.S., Docobo J.A.
<Astron. J., 131, 2681-2686 (2006)>
=2006AJ....131.2681T 2006AJ....131.2681T
ADC_Keywords: Stars, double and multiple ; Binaries, orbits
Keywords: astrometry - binaries: visual -
stars: individual (HIP 14029, HIP 21454, HIP 22196)
Abstract:
The first orbit for visual binary A 1529 and improved orbital elements
for HU 610 and COU 2031 based on new speckle measurements with the 6m
telescope of the Special Astrophysical Observatory (Russia) are
presented. On the basis of simultaneously obtained differential
photometry data, individual masses and spectral types are roughly
estimated.
Description:
The new speckle observations were carried out in 2004 December with
the 6m telescope of the Special Astrophysical Observatory (Russia).
Objects:
-----------------------------------------------
RA (2000) DE Designation(s)
-----------------------------------------------
03 00 38.0 +47 53 06 A 1529 = ** A 1529
04 36 24.8 +34 12 34 HU 610 = ** HU 610
04 46 26.9 +42 20 55 COU 2031 = ** COU 2031
-----------------------------------------------
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 61 78 Measurements and observational residuals
refs.dat 152 40 References
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See also:
I/209 : Catalogue of 2700 double stars (Couteau, 1995)
J/A+AS/106/377 : Double star measurements (Couteau+, 1994)
J/A+AS/126/1 : Double stars measurements (Gili+ 1997)
J/AJ/108/2299 : ICCD speckle obs. of binary stars. XI. (Hartkopf+ 1994)
J/AJ/119/3084 : ICCD speckle obs. of binary stars. XXIII. (Hartkopf+, 2000)
J/AJ/127/1181 : Binary speckle measurements at Calar Alto (Docobo+, 2004)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Star Star name (1)
10- 18 F9.4 yr Obs.Date Epoch of the observation (YYYY.yyyy)
20- 22 A3 --- V/I [vis int HIP] Type of measurement (2)
24- 28 F5.1 deg theta ? Position angle
30 A1 --- f_theta [bc] Flag on theta (3)
32- 34 I3 mas rho ? Separation
36- 37 I2 --- Ref Astrometric data reference
39- 43 F5.1 deg (O-C)T This paper (O-C)θ residual (4)
44 A1 --- f_(O-C)T [)] Predicted value of (O-C)T (5)
46- 48 I3 mas (O-C)R This paper (O-C)ρ residual (4)
49 A1 --- f_(O-C)R [)] Predicted value of (O-C)R (5)
51- 55 F5.1 deg O(O-C)T ? Other orbits (O-C)θ residual (4)
56 A1 --- f_O(O-C)T [)] Predicted value of O(O-C)T (5)
58- 60 I3 mas O(O-C)R ? Other orbits (O-C)ρ residual (4)
61 A1 --- f_O(O-C)R [)] Predicted value of O(O-C)R (5)
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Note (1): Other relevant data for each star:
--------------------------------------------------------------------------
Name magnitude differences Other orbit reference
--------------------------------------------------------------------------
A 1529 1.53 ± 0.03 No other orbits
HU 610 0.33 ± 0.13 Baize (1961JO.....44..254B 1961JO.....44..254B)
COU 2031 0.92 ± 0.06 Mante (2004, IAU Commission 26, Circ. 152)
--------------------------------------------------------------------------
Note (2): Type of measurement, defined as follows:
vis = visual;
int = interferometric;
HIP = from Hipparcos.
Note (3): Flag on theta, defined as follows:
b = pair unresolved;
c = Quadrant changed.
Note (4): The weighted rms of the residuals for each star are:
---------------------------------------
Name (O-C)T (O-C)R O(O-C)T O(O-C)R
---------------------------------------
A 1529 1.6 6.5 --- ----
HU 610 4.5 17.5 6.5 19.9
COU 2031 2.4 5.2 28.8 18.4
COU 2031* 2.5 5.6 5.4 16.9
---------------------------------------
where "*" indicates without the 2004.9907 measurement.
Note (5): In case of unresolved observation.
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref Reference number
4- 22 A19 --- Bibcode Bibcode
24- 45 A22 --- Aut Author's name
47-152 A106 --- Com Comment
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 17-Aug-2007