Access to Astronomical Catalogues

J/A+A/341/121       Visual binary orbits and masses       (Soederhjelm 1999)
Visual binary orbits and masses post Hipparcos
       Soederhjelm S.
      <Astron. Astrophys. 341, 121 (1999)>
      =1999A&A...341..121S      (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Binaries, orbits ; Stars, masses ;
              Parallaxes, trigonometric
Keywords: stars: fundamental parameters - stars: binaries: visual -
          stars: binaries: general - astrometry - catalogs

Description:
    The paper gives orbits and masses for some 200 nearby visual
    binaries, as derived from combining ground-based and Hipparcos
    data. Table 6 gives identifications and notes, and points to
    the detailed data in Table 1 (short-P systems with mass-ratio
    from the Hipparcos observations), Table 3 (mass-uncertainty
    below 10%) or Table 4 (mass-uncertainty above 10%).

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat       104       30   Astrometrically determined mass-ratios with
                              improved orbital elements and parallaxes
table3.dat       118       41   The most accurate mass-sums and orbital elements
                              for the systems without astrometric mass-ratio
table4.dat       118      139   Data as in table3.dat, but for the systems with
                              estimated mass-uncertainty above 10%.
table6.dat        56      222   Cross-identifications for the systems mentioned
                              in this paper
notes.dat         80      228   Individual notes


See also:
   I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)


Byte-by-byte Description of file: table1.dat

   Bytes Format Units   Label     Explanations

   1-  6  I6    ---     HIP       HIP (Cat. I/239) identifier
       7  A1    ---     n_HIP     [b] b when two solutions for the object
   8- 11  F4.2  mag     Hp1       Primary Hp magnitude
  13- 16  F4.2  mag     m2-m1     Magnitude difference (secondary-primary)
  18- 21  F4.2  ---     M2/M1     Mass-ratio (secondary/primary)
  23- 25  F3.2  ---     e_M2/M1   Mean error for M2/M1
  27- 32  F6.2  mas     plx       Parallax in present solutions
  34- 37  F4.2  mas     e_plx     Mean error for plx
  39- 44  F6.2  mas     plx(HIP)  ? Parallax in HIP (Cat. I/239)
  46- 49  F4.2  mas   e_plx(HIP)  ? Mean error for plx(HIP)
  51- 53  I3    %       eps       Total mass-uncertainty
  55- 56  I2    %       eps(p)    Mass-uncertainty due to parallax
  58- 59  I2    %       eps(o)    Mass-uncertainty due to orbit
  61- 64  F4.2  solMass Msum      Mass-sum
  66- 67  A2    ---     Note      [mng ?] Note (1)
  69- 74  F6.3  yr      Per       Orbit period
  76- 82  F7.2  yr      T0        Epoch of periastron
  84- 88  F5.3  arcsec  a         Orbit semi-major axis
  90- 92  F3.2  ---     e         Orbit eccentricity
  94- 96  I3    deg     i         Orbit inclination
  98-100  I3    deg     omega     Orbit argument of periastron ω
 102-104  I3    deg     Omega     Orbit PA of node Ω

Note (1):
      m = previously known or suspected spectroscopic subsystem
      n = note in notes.dat file
      g = giant spectrum


Byte-by-byte Description of file: table3.dat table4.dat

   Bytes Format    Units    Label     Explanations

   1-  6  I6       ---      HIP       HIP (Cat. I/239) identifier
   7-  8  A2       ---      m_HIP     Multiplicity index on HIP (71683/1)
       9  A1       ---      n_HIP     [b] b when two solutions for the object
  10- 14  F5.2     mag      Hp1       Primary Hp magnitude
      16  A1       ---      l_m2-m1   Limit flag on m2-m1
  17- 20  F4.2     mag      m2-m1     Magnitude difference (secondary-primary)
      21  A1       ---      u_m2-m1   Uncertainty flag on m2-m1
  23- 26  F4.2     mag      V-I       ? Combined (primary+secondary) V-I color
  28- 32  F5.1     mas      plx       Parallax in present solutions
  34- 36  F3.1     mas      e_plx     Mean error for plx
  38- 42  F5.1     mas      plx(HIP)  ? Parallax in HIP (Cat. I/239)
  44- 47  F4.1     mas    e_plx(HIP)  ? Mean error for plx(HIP)
      48  A1       ---    u_plx(HIP)  Uncertainty flag on plx(HIP)
  50- 53  F4.1     mag      MHp1      Absolute magnitude of primary
  55- 56  I2       %        eps       Total mass-uncertainty
  58- 59  I2       %        eps(p)    Mass-uncertainty due to parallax
  61- 62  I2       %        eps(o)    Mass-uncertainty due to orbit
  64- 68  F5.2     solMass  Msum      Mass-sum
  70- 73  F4.2     ---      q         ? Photometric mass-ratio
      74  A1       ---      u_q       [)] Uncertainty flag on q
  76- 77  A2       ---      Note      [nmg ?] Note (1)
  79- 86  F8.3     yr       Per       Orbit period
      87  A1       ---      u_Per     Uncertainty flag on Per
  88- 94  F7.2     yr       T0        Epoch of periastron
  96-101  F6.3     arcsec   a         Orbit semi-major axis
     102  A1       ---      u_a       Uncertainty flag on a
 104-106  F3.2     ---      e         Orbit eccentricity
 108-110  I3       deg      i         Orbit inclination
 112-114  I3       deg      omega     Orbit argument of periastron ω
 116-118  I3       deg      Omega     ? Orbit PA of node Ω

Note (1):
      m = spectroscopic subsystem
      g = non-MS component
      n = note in notes.dat file


Byte-by-byte Description of file: table6.dat

   Bytes Format    Units    Label   Explanations

   1- 14  A14      ---      Name    Bayer/Flamsteed designation
  16- 21  I6       ---      HIP     HIP (Cat. I/239) identifier
  23- 32  A10      ---      CCDM    CCDM (Cat. I/211) identifier (hhmmm±ddmm)
      33  A1       ---      u_CCDM  [)] Uncertainty flag on CCDM
  35- 39  I5       ---      ADS     ? ADS identifier
  41- 52  A12      ---      Disc    Discoverer designation
      54  I1       ---      Tab     [0/4] pointer to Table 1,3,4 (1)
      56  A1       ---      Note    [*] *: Note detailed in "notes.dat" file

Note (1): 0 indicates that the object is not in tables 1, 3 or 4.



Byte-by-byte Description of file: notes.dat

   Bytes Format Units   Label     Explanations

   1-  6  I6    ---     HIP       HIP (Cat. I/239) identifier
   8- 80  A73   ---     Note      Text of the note


Acknowledgements: Staffan Soderhjelm 

(End)                                          Patricia Bauer [CDS]  03-Dec-1998