Catalogue name and reference
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JSDC       JMMC Stellar Diameter Catalog
Lafrasse S., Mella G., Bonneau D., Duvert G. & Chelli A., 2010
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ADC_Keywords: Stars, standard ; Interferometry ; Fundamental catalog ;
Photometry, infrared ; Parallaxes, trigonometric; Stars, diameters
Keywords: catalogs - stars: fundamental parameters -
instrumentation: interferometers - techniques: interferometric

Abstract:
This catalog contains stellar angular diameter estimate for bright stars,
complete for all stars with Hipparcos parallaxes.

The JMMC Calibrator Workgroup has long developed methods to estimate the angular
diameter of stars, and provides this expertise in the SearchCal software
(http://www.jmmc.fr/searchcal). "SearchCal" creates a dynamical catalog
of stars suitable to calibrate Optical Long-Baseline Interferometry (OLBI)
observations from on-line queries of CDS catalogs, according to observational
parameters. In essence, SearchCal is limited only by the completeness of the
stellar catalogues it uses, and in particular is not limited in magnitude.
SearchCal being an application centered on OLBI peculiar purposes, it appeared
useful to publish the estimated angular diameters of all stars with known
parallaxes in a static catalog.

The present catalog of stellar angular diameters has been obtained from
SearchCal results aggregation on the whole celestial sphere. For each star, the
value of the limb-darkened angular diameter are computed using a surface
brightness method and calibrations for (B-V), (V-R) and (V-K) color indexes.
Stars whose angular diameters estimated from the various color indexes are not
comparable, are rejected, and a reliable error on the estimated diameter is
computed. For details of the method see Bonneau et al. (2006). To avoid specific
confusion problems, spectroscopic binaries in the 9th Catalogue of
Spectroscopic Binary Orbits (Pourbaix et al.2009) or close visual binaries with
a separation of less than 2 arc seconds in the The Washington Visual Double Star
Catalog (Mason et al. 2001+) have been filtered out this catalog.

Description:
Limb darkened and Uniform Angular diameters are given for 34000 stars, extracted from
the All-sky Compiled Catalogue of 2.5 million stars (I/280B/ascc, Kharchenko et al. 2009).
The limb darkened diameters are computed using the V magnitude and the (V-K)
color index.
The uniform disk diameters are computed for the photometric bands (B, V, R, I,
J, H, K) using the linear limb darkened coefficients from (Claret &
Diaz-Cordoves 1995).
For each star, HD and Hipparcos catalog numbers, equatorial coordinates,
parallax, spectral type, photometric data (B,V,R,J,H,K) and angular diameters
are given.

References:
  Bonneau, D., Clausse, J.M., Delfosse, X. et al, 2006, A&A 456, 789
  Claret, A.; Diaz-Cordoves, J.; Gimenez, A.,1995, A&A Sup. Ser., 114, 247
  Kharchenko, N. V.; Roeser, S., 2009, All-sky Compiled Catalogue of 2.5 million
    stars, VizieR On-line Data Catalog: I/280B. Originally published in:
    2001KFNT...17e.409K
  Mason B.D., Wycoff G.L., Hartkopf W.I., Douglass G.G., Worley C.E. Astron. J.,
    2001, 122, 3466
  Pourbaix D., Tokovinin A.A, Batten A.H., et al., 2004, A&A 424, 272

File Summary:

FileName      Lrecl  Records   Explanations

ReadMe          xx        .   This file
jsdc.dat       yyy      zzz   Star diameters catalog

See also:
J/A+A/393/183 : Catalogue of calibrator stars for LBSI (Borde+, 2002)
J/A+A/433/1155 : 948 bright calibrator stars for interferometry (Merand+, 2005)

B/wds (WDS)The Washington Visual Double Star Catalog (Mason+ 2001-2010)
B/sb9 (SB9)SB9: 9th Catalogue of Spectroscopic Binary Orbits
  (Pourbaix+2004-2009)

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

Bytes Format  Units    Label     Explanations

  1- 30  A30    ---     ---     Name: "HIP"+HIP number (Cat. I/280B) or
                                 "TYC"+tycho number (Cat. I/259/tyc2)
 31- 32  I2     h       RAh     Right Ascension J2000 (hours)
 33- 34  I2     min     RAm     Right Ascension J2000 (minutes)
 35- 39  F5.2   s       RAs     Right Ascension J2000 (seconds)
 40      A1     ---     DE-     Declination J2000 (sign)
 41- 42  I2     deg     DEd     Declination J2000 (degrees)
 43- 44  I2     arcmin  DEm     Declination J2000 (minutes)
 45- 48  F4.1   arcsec  DEs     Declination J2000 (seconds)
TBC         E20.8  mas/yr  pmRA    Proper motion in Right Ascension (mas/yr)
TBC         E20.8  mas/yr  pmDEC   Proper motion in Declination (mas/yr)
         E20.8  ---     Bmag    B magnitude in Johnson system (Cat. I/280B)
         E20.8  ---     Vmag    V magnitude in Johnson system (Cat. I/280B)
         E20.8  ---     Rmag    R magnitude in Johnson system (Cat. II/7A)
         I1     ---     f-Rmag  [0/1] Flag on Rmag value (1)
         E20.8  ---     Imag    I magnitude in Johnson system (Cat. II/7A)
         I1     ---     f-Imag  [0/1] Flag on Imag value (1)
         E20.8  ---     Jmag    J magnitude in Johnson system
                                 (Cat. II/246, II/7A)
         E20.8  ---     Hmag    H magnitude in Johnson system
                                 (Cat. II/246, II/7A)
         E20.8  ---     Kmag    K magnitude in Johnson system
                                 (Cat. II/246, II/7A)
         E20.8  mas     LDD     Limb-Darkened Diameter
         E20.8  mas     e_LDD   Error on Limb-Darkened Diameter (2)
         E20.8  mas     UDDB    Uniform diameter at B band
         E20.8  mas     UDDV    Uniform diameter at V band
         E20.8  mas     UDDR    Uniform diameter at R band
         E20.8  mas     UDDI    Uniform diameter at I band
         E20.8  mas     UDDJ    Uniform diameter at J band
         E20.8  mas     UDDH    Uniform diameter at H band
         E20.8  mas     UDDK    Uniform diameter at K band
TBC         E20.8  mas     UDDL    Uniform diameter at L band
TBC         E20.8  mas     e_UDD L Error on Uniform diameter at L band
TBC         E20.8  mas     UDDN    Uniform diameter at N band
TBC         E20.8  mas     e_UDD N Error on Uniform diameter at N band
         E20.8  mas     plx     Parallax (Cat. I/280B)
         E20.8  mas     e_plx   Error on Parallax (Cat. I/280B)
         E20.8  mas     teff    Model Effective temperature
         E20.8  mas     logg    Model Gravity
         A30    ---     SpType  Spectral type (Cat. I/280B)

Note (1): Magnitude flag:
    1: the corresponding magnitude is a measurement
    0: the corresponding magnitude is an estimate based on the colors deduced from the spectral type.
Note (2): We provide only one error for all angular diameters, since
    the linear corrections between Uniform Disk diameters and the
    Limb-Darkened diameter lead to negligible corrections on the
    UDdiam errors.

Acknowledgements:
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(End)                    Lafrasse, S., date

History:
   * Guillaume : Suppression de la bande Q, passage des erreurs E_diam en e_diam puisque les erreurs sont de type mean error (σ) on parameter et pas mean error (upper limit).
   * Gilles: Suppression de la bande Q, ajout B, précisions sur formats RA DEC, valeurs de PPM, forcé à Johson (?) les bandes.
   * Sylvain : Suppression des magnitudes L N M comme elles ne sont pas toutes renseignées et que l'on veut un catalogue complet (aucune cellule vide).
   * Guillaume:  Rajout de la parallaxe et erreur sur le parallaxe, Logg, Teff et regroupement du type spectral en une seule colonne.
   * Daniel: Ajout de l'abstract et revue des colonnes.
   * Alain: Rajout de LD et UD en début de description.
   * Sylvain : Relecture générale, uniformisation et corrections de typo.