J/A+A/366/868 Binary speckle measurements at Calar Alto. I. (Docobo+, 2001)
Binary star speckle measurements at Calar Alto. I.
Docobo J.A., Tamazian V.S., Balega Y.Y., Blanco J., Maximov A.F.,
Vasyuk V.A.
<Astron. Astrophys. 366, 868 (2001)>
=2001A&A...366..868D 2001A&A...366..868D
ADC_Keywords: Stars, double and multiple ; Interferometry
Keywords: binaries: visual - interferometry
Abstract:
We present the first results of our speckle interferometric
measurements of binary stars made with the ICCD speckle camera using
the 1.52-m telescope of the Observatorio Astronomico Nacional at Calar
Alto (Spain) in September, 1999. The data contain 123 observations of
83 systems. The measured angular separations range from 0.153" to
6.727". We have used there new speckle measurements to improve the
orbital elements for the binaries COU 247 and BU 524 AB.
Objects:
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RA (2000) DE Designation(s)
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00 09 28.2 +19 06 57 COU 247 = HD 489
02 53 42.6 +38 20 15 BU 524 AB = HD 17904
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 59 123 Speckle measurements on the 1.52-m telescope
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See also:
J/A+AS/105/503 : Binary star speckle measurements (Balega+ 1994)
J/A+AS/140/287 : 1992-1997 binary star speckle measurements (Balega+, 1999)
J/AJ/111/370 : Orbits of 37 close visual systems (Hartkopf+ 1996)
J/AJ/117/548 : 1997 WIYN binary stars speckle observations (Horch+, 1999)
J/other/PNAOJ/2.561 : Binaries speckle observations. IV. (Miura+ 1992)
J/AJ/106/352 : ICCD speckle obs. of binary stars. VIII (Hartkopf+ 1993)
J/AJ/106/637 : ICCD speckle obs. of binary stars. IX (Mason+, 1993)
J/AJ/106/1639 : ICCD speckle obs. of binary stars. X (McAlister+ 1993)
J/AJ/108/2299 : ICCD speckle obs. of binary stars. XI (Hartkopf+ 1994)
J/AJ/111/393 : ICCD speckle obs. of binary stars. XII (Al-Shukri+ 1996)
J/AJ/111/936 : ICCD Speckle obs. of binary stars. XIII (Hartkopf+ 1996)
J/AJ/119/3084 : ICCD speckle obs. of binary stars. XXIII (Hartkopf+, 2000)
J/AJ/120/2638 : CCD speckle obs. of binary stars. II. (Horch+, 2000)
J/AJ/127/1181 : Binary speckle measurements at Calar Alto (Docobo+, 2004)
Table 1: Orbital elements for COU 247 and BU 524 AB
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Star COU 247 BU 524 AB
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Author(s) Blanco J. Docobo-Vasyuk
P 280.00 yr 31.528 ± 0.072 yr
T 1990.21 1996.526 ± 0.014
e 0.426 0.753 ± 0.005
a 0.846 " 0.221 ± 0.003 "
i 124.9 ° 121.0 ± 0.6 °
OMEGA 21.3 ° 25.4 ± 0.6 °
omega 47.1 ° 265.0 ± 0.6 °
Sigma masses 2.9 M☉ 4.1 ± 0.4 M☉
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- WDS Washington Double Star Catalogue coordinate,
based on J2000 position
12- 25 A14 --- Name Name of the star or its catalogue number in
common use
26- 33 A8 --- Disc Discoverer designation
36- 44 F9.4 yr Obs Epoch of the observation
46- 50 F5.1 deg PA ? Position angle
52- 56 F5.3 arcsec rho ? Angular separation
58- 59 A2 --- Note Note (1)
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Note (1): Notes:
"UR" : cases when the binary was not resolved. This might indicate
too close a companion (less than 70 mas), too large a magnitude
difference (more than 3 magnitudes), very bad seeing, or any
combination of these factors.
"R" : use of the red 660/40-nm filter.
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History:
From A&A electronic version
(End) Patricia Bauer [CDS] 28-Feb-2001