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J/A+AS/119/483      UBV photometry of double stars. (Sinachopoulos+ 1996)
UBV photometry of wide visual double stars. V. Double stars with mainly
K- and M- type primaries.
       Sinachopoulos D., van Dessel E.L.
      <Astron. Astrophys. Suppl. Ser. 119, 483 (1996)>
      =1996A&AS..119..483S      (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Photometry, UBV

Keywords: stars: binaries: visual


Description:
    We present UBV photometric observations of 55 wide visual double stars
    with K- and M- type primaries. Our observations have been compared and
    combined with information available in the literature. At least 58% of
    them are optical pairs.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1            83       54   UBV photometry of wide double stars with K-
                                  and  M- type primaries
table2            76       38   The astrophysical data
tables.tex        89      285   LaTeX version of the tables


Byte-by-byte Description of file: table1

   Bytes Format Units   Label     Explanations

   1- 10  A10   ---     IDS       IDS code of the double star as listed
                                   in WDS (Worley and Douglass, 1984)
  12- 15  F4.1  arcsec  Sep       Angular separation
  17- 18  A2    ---     SpA       Spectral type of A component
  20- 24  F5.2  mag     Vmag      V magnitude of A component
  26- 28  F3.2  mag     e_Vmag    rms uncertainty on Vmag
  30- 33  F4.2  mag     B-V       B-V color index of A component
  35- 37  F3.2  mag     e_B-V     rms uncertainty on B-V
  39- 42  F4.2  mag     U-B       ? U-B color index of A component
  44- 46  F3.2  mag     e_U-B     ? rms uncertainty on U-B
      48  I1    ---     o_Vmag    Number of observation for A component
  50- 51  A2    ---     SpB       Spectral type of B component
  53- 57  F5.2  mag     Vmag2     V magnitude of B component
  59- 61  F3.2  mag     e_Vmag2   rms uncertainty on Vmag2
  63- 66  F4.2  mag     B-V2      B-V color index of B component
  68- 70  F3.2  mag     e_B-V2    rms uncertainty on B-V2
  72- 75  F4.2  mag     U-B2      U-B color index of B component
  77- 79  F3.2  mag     e_U-B2    rms uncertainty on U-B2
  81- 82  I2    ---     o_Vmag2   Number of observation for B component


Byte-by-byte Description of file: table2

   Bytes Format Units   Label     Explanations

   1-  2  I2    ---     No        Sequence number
   5- 14  A10   ---     IDS       IDS number
      18  A1    ---     m_IDS     [AB] Component of the binary
  21- 28  A8    ---     Sp        Spectral type
  31- 35  F5.2  mag     E(B-V)    ? B-V extinction
  38- 42  F5.2  mag     E(U-B)    ? U-B extinction
  44- 48  F5.2  mag     A(V)      ? Visual absorption
  50- 54  F5.2  mag     MV        ? Absolute V magnitude
  56- 61  F6.1  pc      Dist      ? Distance
  63- 67  I5    AU      Sep       ? Separation
  69- 76  A8    ---     Nat       Nature (1)

Note (1): PHY: physical pair
          PHY(?): probably a physical pair
          PHY?: either has CO components only, or they are in addition
                 gravitationally bound
          CO?: two components of the system have common origin (born together,
                but not orbital motion)
          CO(?): either OPT or it has CO components
          OPT: optical pair


Acknowledgements: Dimitris Sinachopoulos  


References:
    Worley and Douglass, 1984  =Catalogue I/107
(End)                                        Patricia Bauer  [CDS]   03-May-1996