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J/A+AS/134/545      Double star measurements 1995-1997    (Aristidi+ 1999)
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Speckle observations of double and multiple stars at Pic du Midi: measurements
during 1995 and 1997 and new orbits
       Aristidi E., Prieur J.-L., Scardia M., Koechlin L., Avila R.,
       Carbillet M., Lopez B., Rabbia Y., Nisenson P., Gezari D.
      <Astron. Astrophys. Suppl. Ser. 134, 545 (1999)>
      =1999A&AS..134..545A      (SIMBAD/NED BibCode)
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ADC_Keywords: Stars, double and multiple ; Binaries, orbits
Keywords: techniques: interferometric - binaries: close

Abstract:
    We present speckle observations of 48 double and multiple stars
    observed with the 2-meter ``Telescope Bernard Lyot'' (TBL) in December
    1995, January 1997 and June 1997. Angular separations, absolute
    position angles and relative photometry result from these
    observations. New orbital elements have been recalculated for 8
    double stars.

File Summary:
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  FileName      Lrecl  Records   Explanations
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ReadMe             80        .   This file
table1.dat        145       79   Table of measurements
refs.dat           59       30   References
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See also:
       V/39 : 4th Catalog of Orbits of Visual Binaries (Worley+, 1983)

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      WDS or HD designation
  13- 22  A10   ---      ID        Discover identified
      24  I1    ---      Mult.     Number of stars of the system
  26- 37  A12   ---      RefStar   Reference star name (1)
  39- 46  F8.3  yr       Epoch     Epoch of observation
  48- 50  I3    nm       lambda    Wavelength
  52- 53  I2    nm       Dlambda   Band width
  55- 58  F4.1  ms       ExpTime   Exposition time
      59  A1    ---    n_ExpTime   [+] +: observation with the PAPA detector
  60- 63  A4    ---      Object    Name of the measured component of the
                                    multiple star (2)
  65- 85  A21   ---      Ref       Latest orbit reference (3)
  87- 91  F5.3  arcsec   rho       ? Predicted separation angle
  93- 97  F5.3  arcsec e_rho       ? rms uncertainty on rho
      98  A1    ---    n_rho       [n] n: not detected
  99-103  F5.3  arcsec   rhocal    ? Calculated separation angle
 105-110  F6.3  arcsec   Drho      ? rho minus rhocal
 112-116  F5.1  deg      theta     ? Predicted position angle
 118-120  F3.1  deg    e_theta     ? rms uncertainty on theta
 122-128  F7.3  deg      thetacal  ? Calculated position angle
 130-135  F6.1  deg      Dtheta    ? theta minus thetacal
 137-140  F4.2  mag      Dmag      ? magnitude difference
 142-145  F4.2  mag    e_Dmag      ? rms uncertainty on Dmag
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Note (1): {nu} Cyg was in fact discovered as double and then not used as
           reference star in the processing of BU 151
Note (2): For {epsilon} Hya, the angular separation ABxC was computed from AB,
           AC and {DELTA}m_AB_ as the distance between C and the photocenter of
           AB.
Note (3): For orbits prior to 1982 (followed by a *), orbital elements were
           found in the catalog of Worley & Heintz, 1983, Cat. <V/39>
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Byte-by-byte Description of file: refs.dat
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   Bytes Format Units   Label     Explanations
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   1- 19  A19   ---     BibCode   BibCode
  21- 35  A15   ---     Aut       Author's name
  37- 59  A23   ---     Com       Comment
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History: Prepared via OCR at CDS.
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(End)                                          Patricia Bauer [CDS]  01-Feb-1999