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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
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:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 90 549 Double star speckle measures, Nov 2001, Lowell-Tololo 61-cm
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
Bytes Format Units Label Explanations
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)
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.
History: From electronic version of the journal References: Horch et al., Paper I 1997AJ....114.2117H Horch et al., Paper II 2000AJ....120.2638H, Cat. J/AJ/120/2638 Horch et al., Paper III 2001AJ....121.1583H
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 17-Jul-2008
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