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J/A+AS/146/365       O & B stars uvby-Hbeta photometry. III.  (Kaltcheva+, 2000)
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Stroemgren and H{beta} photometry of O and B type stars in star-forming regions.
III. Carina Spiral Feature
     Kaltcheva N.T., Olsen E.H., Clausen J.V.
    <Astron. Astrophys. Suppl. Ser. 146, 365 (2000)>
    =2000A&AS..146..365K
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ADC_Keywords: Stars, early-type ; Photometry, uvby, beta
Keywords: stars: early type -
          open clusters and associations: Carina Spiral Feature

Abstract:
    Stroemgren and H{beta} photometry of O and B type stars, generally
    brighter than 9.5 mag is reported for the field of the Carina Spiral
    Feature. The observations are based on the PPM (Cat. <I/193>) catalogue
    identifications and are designed to improve the completeness of the
    existing uvby{beta} data for the bright early-type stars in the field.
    We present new uvby photometry for 283 stars and H{beta} photometry
    for 225 of them. These observations are part of an ongoing effort to
    study the structure of selected star-forming regions in the Milky Way
    by means of uvby{beta} photometry. A comparison of the new data to
    other uvby{beta} data sets for this field is presented.

Description:
   Table 1: Catalogue of Stroemgren photometry for 283 program stars in
    the field of the Carina Spiral Feature. The PPM identifications are
    given in the first column. Columns 2, 4, 6, and 8 give V, b-y, m1, and
    c1, respectively. Columns 3, 5, 7, and 9 give the internal rms errors
    of one observation (weight 1). In columns 10 and 11 the weight of V
    and the indices are listed, respectively. Column 12 gives the number
    of nights for each star. Columns 13 and 14 show the
    cross-identification with the HD and LS numbers.
   Table 2: H{beta} photometry for 225 program stars in the field of the
    Carina Spiral Feature. The PPM identifications are given in the first
    column, and the photometry follows in column 2. Column 3 gives the
    internal rms errors of one observation (weight 1). In columns 4 and 5
    the weight of the H{beta} indices and the number of the nights for
    each star are listed, respectively. Columns 6 and 7 show the
    cross-identification with the HD and LS numbers.

File Summary:
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 FileName      Lrecl  Records   Explanations
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ReadMe            80        .   This file
table1.dat        96      283   The uvby catalogue
table2.dat        50      225   The H{beta} catalogue
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See also:
 J/A+A/352/600  : O + B stars uvby-Hbeta photometry. I. (Kaltcheva+, 1999)
 J/A+A/352/605  : O + B stars uvby-Hbeta photometry. II. (Kaltcheva+, 1999)
 J/A+AS/128/309 : ubvy-beta phot. of CarOB1 and CarOB2 stars (Kaltcheva 1998)
          I/193 : Positions and Proper Motions - South (Bastian+ 1993)
        III/135 : HD Catalogue and Extension (Cannon+ 1918-24; ADC 1989)
        III/43  : Luminous Stars in the Southern Milky Way (Stephenson+ 1971)

Byte-by-byte Description of file: table1.dat
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   Bytes Format Units   Label     Explanations
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   1-  6  I6    ---     PPM       PPM (Cat. <I/193>) number
   9- 14  F6.3  mag     Vmag      Transformed to the standard Johnson V mag
  17- 21  F5.3  mag   e_Vmag      Mean error on V mag
  23- 28  F6.3  mag     (b-y)     Stroemgren colour index
  31- 35  F5.3  mag   e_(b-y)     Mean error on (b-y)
  37- 42  F6.3  mag     m1        m1 (=(v-b)-(b-y)) colour index
  45- 49  F5.3  mag   e_m1        Mean error on m1
  51- 56  F6.3  mag     c1        c1 (=(u-v)-(v-b)) colour index
  59- 63  F5.3  mag   e_c1        Mean error on c1
      67  I1    ---   w_Vmag      Weight of Vmag
      71  I1    ---   w_(b-y)     Weight of 4-colour indices
      74  I1    ---   o_Vmag      Number of nights of observations
  79- 84  I6    ---     HD        ? HD (Cat. <III/135>) number
  89- 92  I4    ---     LS        ? LS (Cat. <III/43>) number
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Byte-by-byte Description of file: table2.dat
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   Bytes Format Units   Label     Explanations
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   1-  6  I6    ---     PPM       PPM (Cat. <I/193>) number
   9- 13  F5.3  mag     beta      H{beta} index
  16- 20  F5.3  mag   e_beta      Mean error on H{beta} index
      24  I1    ---   w_beta      Weight of H{beta} index
      27  I1    ---   o_beta      Number of nights
  33- 38  I6    ---     HD        ? HD (Cat. <III/135>) number
  43- 46  I4    ---     LS        ? LS (Cat. <III/43>) number
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Acknowledgements: Nadia Kaltcheva <nadia@phys.uni-sofia.bg>
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(End)                                        Patricia Bauer [CDS]    23-Oct-2000