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J/MNRAS/371/1793  Metallicity calibrations for UBV photometry   (Karatas+, 2006)
Metallicity and absolute magnitude calibrations for UBV photometry.
    Karatas Y., Schuster W.J.
   <Mon. Not. R. Astron. Soc., 371, 1793-1812 (2006)>
   =2006MNRAS.371.1793K
ADC_Keywords: Stars, early-type ; Photometry, UBV ; Abundances, [Fe/H] ;
              Magnitudes, absolute
Keywords: stars: abundances - stars: distances - solar neighbourhood


Abstract:
    Calibrations are presented here for metallicity ([Fe/H]) in terms of
    the ultraviolet excess, [Δ(U-B) at B-V=0.6, hereafter D0.6], and
    also for the absolute visual magnitude (MV) and its difference with
    respect to the Hyades (ΔMHV) in terms of D0.6 and (B-V),
    making use of high-resolution spectroscopic abundances from the
    literature and Hipparcos parallaxes.

Description:
    UBV photometry [V, (B-V), (U-B)] has been collected from large data
    bases in conjunction with the derivation of intrinsic-colour,
    metallicity and absolute magnitude calibrations of F-, G- and
    early-K-type stars for uvby-beta photometry being derived by 
    Karata & Schuster (in preparation).

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat       103      514   Data
refs.dat         114      144   References


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 number (Cat. I/239)
   8- 18  A11   ---     Name      Other name
  20- 24  F5.2  mag     Vmag      V magnitude
  26- 29  F4.2  mag     B-V       B-V colour index
  31- 35  F5.2  mag     U-B       U-B colour index
  37- 39  I3    ---     r_Vmag    Reference for photometry
  41- 46  F6.3  mag     E(B-V)    Reduced reddening
  48- 52  F5.2  mag     D0.6      Ultraviolet excess (Δ(U-B) at B-V=0.6)
  54- 58  F5.2  Sun     [Fe/H]    Spectroscopic Fe abundance abundance
  60- 62  I3    ---     r_[Fe/H]  Reference for spectroscopy
  64- 67  F4.2  mag     VMAG      Absolute V magnitude
  69- 74  F6.2  mas     plx       Hipparcos trigonometric parallax
  76- 80  F5.3  mas     e_plx     rms uncertainty on plx
  81- 85  F5.3  mag     b-y       ?=- Stroemgren b-y colour index
  87- 91  F5.3  mag     m1        ?=- Stroemgren m1 colour index
  93- 97  F5.3  mag     c1        ?=- Stroemgren c1 colour index
  99-103  F5.3  mag     beta      ?=- Stroemgren beta colour index


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

   Bytes Format Units   Label     Explanations

   1-  3  I3    ---     Ref       Reference number
   5- 23  A19   ---     BibCode   BibCode
  25- 55  A31   ---     Aut       Author's name
  56-114  A59   ---     Com       Comments


History:
    From electronic version of the journal
(End)                                      Patricia Vannier [CDS]    29-May-2007