J/MNRAS/367/1170 PISCO speckle observations in 2004 (Scardia+, 2006)
Speckle observations with PISCO in Merate -
II. Astrometric measurements of visual binaries in 2004.
Scardia M., Prieur J.-L., Pansecchi L., Argyle R.W., Sala M., Ghigo M.,
Koechlin L., Aristidi E.
<Mon. Not. R. Astron. Soc., 367, 1170-1180 (2006)>
=2006MNRAS.367.1170S 2006MNRAS.367.1170S
ADC_Keywords: Stars, double and multiple
Keywords: techniques: interferometric - binaries: close - binaries: visual
Abstract:
We present relative astrometric measurements of visual binaries taken
during the second semester of 2004 with the Pupil Interferometry
Speckle camera and Coronagraph (PISCO) at the 1-m Zeiss telescope of
the Brera Astronomical Observatory, in Merate, Italy. We performed 207
new observations of 194 objects with angular separations in the range
0.1-4.0" and an accuracy better than ∼0.01". Our sample
contains orbital couples as well as binaries whose motion is still
uncertain. Our purpose is to improve the accuracy of the orbits and
constrain the masses of the components.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 92 207 Astrometric measurements of binaries
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See also:
J/ApJS/131/561 : Double stars with PISCO at Pic du midi (Scardia+, 2000)
J/A+A/367/865 : Speckle observations of binary systems (Prieur+ 2001)
J/A+AS/134/545 : Double star measurements 1995-1997 (Aristidi+ 1999)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- WDS WDS designation (HHMMm+DDMM)
12- 25 A14 --- Name Name
27- 31 I5 --- ADS ? ADS number
32- 33 A2 --- m_ADS Multiplicity index on ADS
35- 42 F8.3 yr Epoch Epoch of observation
44 A1 --- Filter [RV] Filter
46- 47 I2 mm Eyep Focal length of the eyepiece used for
magnifying the image
49- 53 F5.3 arcsec rho ? Angular separation
55- 59 F5.3 arcsec e_rho ? rms uncertainty on rho
61- 65 F5.1 deg theta ? Position angle, measured relative to the
north direction and increasing in the
direction of increasing right ascension
66 A1 --- n_theta [*] *: ambiguity could be solved by a
triple-correlation method (1)
68- 70 F3.1 deg e_theta ? rms uncertainty on theta
72 I1 --- Orb [0/1] 1: object for which an orbit is known
74- 92 A19 --- Notes Notes
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Note (1): The position angle was measured on the autocorrelation function,
which leaves a 180° ambiguity. An asterisk indicates that this
ambiguity could be solved by a triple-correlation method. Otherwise,
we used the quadrant determination of the 'Fourth Catalogue of
Interferometric Measurements of Binary Stars' (Hartkopf et al., 2004,
http://ad.usno.navy.mil/wds/int4.html ).
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History:
From electronic version of the journal
References:
Scardia et al., Paper I 2005MNRAS.357.1255S 2005MNRAS.357.1255S
(End) Patricia Vannier [CDS] 26-Sep-2006