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J/A+AS/130/223      Multiplicity among peculiar A stars I. (North+ 1998)
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Multiplicity among peculiar A stars I. The Ap stars HD 8441 and HD 137909,
and the Am stars HD 43478 and HD 96391
       North P., Carquillat J.-M., Ginestet N., Carrier F., Udry S.
      <Astron. Astrophys. Suppl. Ser. 130, 223 (1998)>
      =1998A&AS..130..223N      (SIMBAD/NED BibCode)
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ADC_Keywords: Binaries, spectroscopic ; Radial velocities ; Photometry, Geneva
Keywords: stars: binaries: spectroscopic - stars: binaries: eclipsing -
          stars: individual: HD 8441, HD 43478, HD 93961, HD 137909

Description:
    Radial velocities measured with the Coravel scanner are used to
    determine the orbits of two Ap stars and of two Am stars. The Ap stars
    HD 8441 appears to be a triple system (though of SB1 type), while
    improved orbital elements and masses are given for the classical Ap
    star beta CrB. Both Am stars HD 43478 and HD 93961 are SB2 binaries,
    and the fundamental elements of the former can be known thanks to its
    eclipsing nature.

Objects:
    ----------------------------------------------------------
       RA   (2000)   DE      Designation(s)
    ----------------------------------------------------------
    01 24 18.7   +43 08 32   HD 8441
    15 27 50.3   +29 06 16   HD 137909
    06 17 51.5   +32 30 16   HD 43478
    11 08 22.0   +71 57 33   HD 96391
    ----------------------------------------------------------

File Summary:
--------------------------------------------------------------------------------
 FileName    Lrecl    Records    Explanations
--------------------------------------------------------------------------------
ReadMe          80          .    This file
table6.dat      34        107    Individual CORAVEL velocities of HD 8441
table7.dat      34         78    Individual CORAVEL velocities of HD 137909
table8.dat      70         36    Photometry of HD 43478
table9.dat      34         56    Individual CORAVEL velocities of HD 43478 A
table10.dat     34         57    Individual CORAVEL velocities of HD 43478 B
table11.dat     34         44    Individual CORAVEL velocities of HD 96391 A
table12.dat     34         36    Individual CORAVEL velocities of HD 96391 B
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See also:
  II/169 : Catalogue of observations in the Geneva photometric system

Byte-by-byte Description of file: table6.dat, table7.dat, table9.dat
Byte-by-byte Description of file: table10.dat, table11.dat, table12.dat
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   Bytes Format  Units     Label   Explanations
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   1-  8  A8    "DD/MM/YY" Date    Observation date
  10- 20  F11.3  d         HJD     Heliocentric Julian Day
  23- 28  F6.2   km/s      HRV     Heliocentric radial velocity
  31- 34  F4.2   km/s    e_HRV     individual rms error on HRV
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Byte-by-byte Description of file: table8.dat
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   Bytes Format  Units Label  Explanations
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   1- 11  F11.3  d     HJD    Heliocentric Julian day
      15  I1     ---   Q      Photometric Q weight (Rufener 1988, Cat. <II/169>)
  19- 23  F5.3   mag   [V]    Magnitude in the visible
      26  I1     ---   P      Photometric P weight (Rufener 1988, Cat. <II/169>)
  30- 34  F5.3   mag   [U-B]  Geneva [U-B] index
  37- 41  F5.3   mag   [V-B]  Geneva [V-B] index
  44- 48  F5.3   mag   [B1-B] Geneva [B1-B] index
  51- 55  F5.3   mag   [B2-B] Geneva [B2-B] index
  58- 62  F5.3   mag   [V1-B] Geneva [V1-B] index
  65- 69  F5.3   mag   [G-B]  Geneva [G-B]  index
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Acknowledgements: Pierre North <Pierre.North@obs.unige.ch>

References:
   Rufener F., 1988, "Catalogue of stars measured in the Geneva Observatory
    Photometric system", 4th Edition, Geneva Observatory (Cat. <II/169>)
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(End)                                         Patricia Bauer [CDS]   05-Mar-1998