J/AJ/117/548 1997 WIYN binary stars speckle observations (Horch+, 1999)
Speckle observations of binary stars with the WIYN telescope.
I. Measures during 1997.
Horch E., Ninkov Z., Van Altena W.F., Meyer R.D., Girard T.M.,
Timothy J.G.
<Astron. J. 117, 548 (1999)>
=1999AJ....117..548H 1999AJ....117..548H (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple
Keywords: astrometry - binaries: close - binaries: visual -
techniques: interferometric
Abstract:
Two hundred seventy-seven position angle and separation measures of
154 double stars are presented. Three of the systems were previously
unknown to be double, and 16 other systems were discovered earlier
this decade by the Hipparcos satellite. Measures are derived from
speckle observations taken with the Wisconsin-Indiana-Yale-NOAO (WIYN)
3.5 m telescope located at Kitt Peak, Arizona. Speckle images were
obtained using two different imaging detectors, namely, a multianode
microchannel array (MAMA) detector and a fast-readout CCD. A
measurement precision study was performed on a sample of binaries with
extremely well known orbits by comparing the measures obtained here to
the ephemeris predictions. For the CCD, the root mean square (rms)
deviation of residuals was found to be 3.5 milliarcseconds (mas) in
separation and 12 in position angle, while the residuals of the MAMA
data varied depending on the magnification used and seeing conditions
but can be comparable or superior to the CCD values. In addition, the
two cameras were compared in terms of the detection limit in total
magnitude and magnitude difference of the systems under study. The
MAMA system has the ability to detect some systems with magnitude
differences larger than 3.5, although reliable astrometry could not be
obtained on these objects. Reliable astrometry was obtained on a
system of magnitude difference of 5.3 with the CCD system.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 81 110 Double star speckle measures, CCD
table3.dat 81 57 Double star speckle measures,
MAMA (low magnification)
table4.dat 81 110 Double star speckle measures,
MAMA (2.5 x magnification)
notes.dat 80 28 Individual notes (tables 2, 3 and 4)
table6.dat 62 20 Position angle and separation changes since the
Hipparcos observation epoch for Hipparcos
discovery objects
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See also:
I/237 : The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
VI/46 : Second catalog of interferometric measurements of binary stars
(McAlister+, 1988)
I/236 : The Hipparcos and Tycho Catalogues (ESA 1997)
V/39 : 4th Catalog of Orbits of Visual Binaries (Worley+, 1983)
Byte-by-byte Description of file: table[234].dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name Star name
13- 25 A13 --- Disc Discover designation
27- 32 I6 --- HD ? HD number
33- 34 A2 --- m_HD Multiple HD number (-N)
36- 41 I6 --- HIP ? HIP number
43- 52 A10 --- WDS WDS designation (based on 2000 positions)
54- 60 F7.4 yr Date-1900 Observation date (minus 1900)
62- 66 F5.1 deg PA Position angle (positive north to east)
68- 72 F5.3 arcsec Sep Separation
74- 76 I3 nm lambda Center wavelength of the filter used to make
the observation
78- 79 I2 nm FWHM Filter passband Full Width at Half-maximum
80 A1 --- Note [abcd] Notes related to quadrant (1)
81 A1 --- n_Name [*] Individual note in notes.dat file
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Note (1):
a: Quadrant determined by the analysis was ambiguous but consistent
with recent measures in the WDS, the CHARA Third Catalog of
Interferometric Measures of Binary Stars (Hartkopf et al., 1997,
Chara Contrib. 4), or the Hipparcos (Cat. I/239) observation.
b: Quadrant determined by the analysis was ambiguous and inconsistent
with recent measures in the WDS, CHARA Third Catalog, or the
Hipparcos (Cat. I/239) observation. We have therefore adopted
the quadrant consistent with previous measures.
c: Quadrant determined by the analysis was inconsistent with previous
measures in the WDS, CHARA Third Catalog, or the Hipparcos (Cat.
I/239) observation. We have therefore adopted the quadrant
consistent with previous measures.
d: Quadrant determined by the analysis was inconsistent with recent
measures in the WDS or the CHARA Third Catalog, but the system has
magnitude difference of 0.0 according to the WDS. We have
therefore adopted the quadrant consistent with previous measures.
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- WDS WDS designation (based on 2000 positions)
12- 89 A78 --- Note Text of the note
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- WDS WDS designation (based on 2000 positions)
12- 21 A10 --- Disc Discover designation
23- 28 I6 --- HIP Hipparcos number
30- 33 F4.2 mag Vmag Total V magnitude
35- 39 F5.2 mas plx Parallax
41- 43 I3 deg PA HIP position angle
45- 49 F5.3 arcsec Sep HIP separation
51 I1 --- Nmeas Measure in table
53- 55 I3 deg DPA Difference in position angle
57- 62 F6.3 arcsec DSep Difference in separation
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History: From AJ electronic version
References:
Horch et al., Paper II 2002AJ....123.3442H 2002AJ....123.3442H
Horch et al., Paper III 2002AJ....124.2245H 2002AJ....124.2245H
Horch et al., Paper IV 2004AJ....127.1727H 2004AJ....127.1727H Cat. J/AJ/127/1727
Horch et al., Paper V 2008AJ....136..312H 2008AJ....136..312H Cat. J/AJ/136/312
Horch et al., Paper VI 2010AJ....139..205H 2010AJ....139..205H Cat. J/AJ/139/205
Horch et al., Paper VII 2012AJ....143...10H 2012AJ....143...10H Cat. J/AJ/143/10
(End) James Marcout, Patricia Bauer [CDS] 15-Mar-1999