J/AJ/131/3008 Double star speckle measures (Horch+, 2006)
CCD speckle observations of binary stars from the southern hemisphere.
IV. Measures during 2001.
Horch E.P., Baptista B.J., Veillette D.R., Franz O.G.
<Astron. J., 131, 3008-3015 (2006)>
=2006AJ....131.3008H 2006AJ....131.3008H
ADC_Keywords: Stars, double and multiple ; Photometry
Keywords: astrometry - binaries: visual - techniques: high angular resolution -
techniques: interferometric - techniques: photometric
Abstract:
We present 549 observations of 181 primarily southern binary stars. Of
these, 32 are high-quality nondetections, meaning that, if binary, the
system had a separation below the diffraction limit at the time of the
observation, and relative astrometry is presented for the remaining
517 observations. In addition, a magnitude difference measure is
reported in 312 cases in which the observation was judged to be of
sufficient quality to have little decorrelation of the speckle pattern
of the secondary relative to the primary star. These data were
obtained from speckle observations taken at the Lowell-Tololo 0.6m
telescope at Cerro Tololo Inter-American Observatory using a
fast-readout CCD detector during 2001 November.
Description:
Observations were taken during the period 2001 October 9-22 at the
Lowell-Tololo 0.6m telescope.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 90 549 Double star speckle measures, Nov 2001,
Lowell-Tololo 61-cm
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See also:
I/237 : The Washington Visual Double Star Cat., 1996.0 (Worley+, 1996)
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
II/235 : The Photometric Magnitude Difference Catalog (Worley+ 2001)
VI/46 : Second catalog of interferometric measurements of binary stars
(McAlister+, 1988)
V/39 : 4th Catalog of Orbits of Visual Binaries (Worley+, 1983)
J/AJ/120/2638 : CCD speckle obs. of binary stars. II. (Horch+, 2000)
J/AJ/117/548 : 1997 WIYN binary stars speckle observations (Horch+, 1999)
J/AJ/127/1727 : Differential magnitudes of binary stars (Horch+, 2004)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name Object identification (HR, ADS, DM,etc.)
13- 23 A11 --- OName Discoverer designation
25- 30 I6 --- HD HD number (Cat. III/135)
32- 37 I6 --- HIP Hipparcos catalog number (Cat. I/239)
39- 48 A10 --- WDS Washington Double Star catalog number
(Cat. I/237) (1)
50- 58 F9.4 yr Date Fraction of the Besselian year observation date
60- 64 F5.1 deg PA ? Observed position angle (east of north)
66 A1 --- l_Sep Limit flag on Sep
67- 73 F7.3 arcsec Sep Observed separation
75- 78 F4.2 mag Dmag ? The magnitude difference obtained (2)
80- 82 I3 nm lam Center wavelength of the filter used
84- 86 I3 nm FWHM ? Full Width at Half Maximum of the filter band
88- 90 A3 --- Flg Inconsistency remarks (3)
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Note (1): Where the RA and Dec (J2000.0) are given in the number with the
format HHMMm±DDMM.
Note (2): If the observation was judged to be of sufficient quality as
described in Section 3.2.
Note (3): Flag on Name, defined as follows:
a = Quadrant ambiguous.
b = Quadrant is inconsistent with previous measures in the
4th Interferometric Catalog (Cat. II/235).
c = Measures in the 4th Interferometric Catalog (Cat. II/235)
do not show a clear trend in the quadrant determination.
d = Power spectrum shows clear evidence of a companion below the
diffraction limit.
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History:
From electronic version of the journal
References:
Horch et al., Paper I 1997AJ....114.2117H 1997AJ....114.2117H
Horch et al., Paper II 2000AJ....120.2638H 2000AJ....120.2638H, Cat. J/AJ/120/2638
Horch et al., Paper III 2001AJ....121.1583H 2001AJ....121.1583H
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 17-Jul-2008