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J/ApJS/82/117       UBV and H-beta in Sco-Cen association   (Slawson+, 1992)
A homogeneous catalog of new UBV and H-beta photometry of B and A type
stars in and around the Scorpius-Centaurus OB association
     Slawson R.W., Hill R.J., Landstreet J.D.
    <Astrophys. J. Suppl. Ser. 82, 117 (1992)>
    =1992ApJS...82..117S      (SIMBAD/NED Reference)
ADC_Keywords: Stars, early-type ; Photometry, UBV ; Photometry, H-beta

Keywords: open clusters and associations: individual (Sco-Cen association) -
          stars: early-type - stars: fundamental parameters

Description:
    As part of a thorough study of the luminosity function of Sco-Cen,
    UBV, and Hβ photometry has been acquired for a large number of
    mid B- to late A-type stars which are within or surrounding the
    Scorpius-Centaurus OB association. UBV and Hβ photoelectric
    measures have been obtained for all the B stars without previous
    observations and for many of those with in the large field
    280deg≤l≤362deg, +10deg≤b≤+40deg, and m-M≤7.5mag. Within the
    upper Scopius subgroup (ScoOB2), 341deg≤l≤362deg, +10=<b=<30deg, UBV
    and Hβ photometry was obtained for all B stars listed in the
    MSC(HD) catalog. As well, UBV measures were obtained for all the
    A-type stars within this field.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table4            63     3243   Mean UBV observations
table4.tex        74    20242   Plain TeX version of table4
table5            25      744   Mean H-beta observations
table5.tex        74     1020   Plain TeX version of table5


Byte-by-byte Description of file: table4

   Bytes Format Units   Label     Explanations

   1- 11  A11   ---     Name      HD, CD or CPD number
  16- 21  F6.3  mag     Vmag      V magnitude
  23- 26  F4.3  mag     e_Vmag    ? rms uncertainty in Vmag
      28  A1    ---     n_Vmag    [*] Note on Vmag (1)
  30- 35  F6.3  mag     B-V       B-V colour
  38- 41  F4.3  mag     e_B-V     ? rms uncertainty in B-V
  43- 44  I2    ---     o_Vmag    Number of observations contributing to B and V
      46  A1    ---     n_B-V     [*] Note on B-V (1)
  48- 53  F6.3  mag     U-B       ? U-B magnitude
  55- 58  F4.3  mag     e_U-B     ? rms uncertainty in U-B
  60- 61  I2    ---     o_U-B     Number of observations in U filter
      63  A1    ---     n_U-B     [*] Note on U-B (1)

Note (1): An asterisk after an uncertainty value for a V, B-V, or U-B magnitude
           indicates probable variability based on a chi-squared test.


Byte-by-byte Description of file: table5

   Bytes Format Units   Label     Explanations

   1-  6  I6    ---     HD        HD Number
   7-  8  A2    ---     m_HD      Multiplicity index on HD
  11- 15  F5.3  ---     Hbeta     H-beta index
  17- 20  F4.3  ---     e_Hbeta   rms uncertainty in H-beta
  22- 23  I2    ---     o_Hbeta   Number of individual observations
      25  A1    ---     n_Hbeta   [*] Note on Hbeta (1)

Note (1): An asterisk after the uncertainty in the H-beta index
           indicates probable variability based on a chi-squared test.


Courtesy:
    Bob Slawson, The Univ. of Western Ontario     
(End)                                    Francois Ochsenbein [CDS]   16-Feb-1995