ACDS V10.0 - Mon Apr 22 09:36:26 CEST 2019

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Detailed Description of B/bax :
The BAX Database (Blanchard+, 2004)

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Note : this is the description file of the original catalog. This HTML page corresponds well to the original description, but some minor changes in the format may have been introduced in the FITS output files in order to allow for arithmetic operations on quantities such as coordinates and times. h:m:s and d:m:s units are normally converted into degrees, and YYYY-MM-DD into julian days.
Similarly, some slight changes may have been introduced in the units; the value given in the HTML files supersedes the value indicated in the ReadMe file for this catalogue.
B/bax               The BAX Database                 (Blanchard+, 2004)
================================================================================
X-Rays Galaxy Clusters Database.
     Sadat R., Blanchard A., Kneib J.-P., Mathez G., Madore B., Mazzarella J.M.
     <Astron. Astrophys. 424, 1097 (2004)>
     =2004A&A...424.1097S        (SIMBAD/NED BibCode)
================================================================================
ADC_Keywords: Clusters, galaxy ; X-ray sources

Keywords: galaxies: clusters: general - X-rays: galaxies -
          astronomical databases: miscellaneous

Abstract:
    We present BAX, Base de Donnees Amas de Galaxies X
    (http://bax.ast.obs-mip.fr), a multi-wavelength database dedicated to
    X-ray clusters and groups of galaxies allowing detailed information
    retrieval. BAX is designed to support astronomical research by
    providing access to published measurements of the main physical
    quantities and to the related bibliographic references: basic data
    stored in the database are cluster/group identifiers, equatorial
    coordinates, redshift, flux, X-ray luminosity (in the ROSAT band) and
    temperature, and links to additional linked parameters (in X-rays,
    such as spatial profile parameters, as well as SZ parameters of the
    hot gas, lensing measurements, and data at other wavelengths, such as
    optical and radio). The clusters and groups in BAX can be queried by
    the basic parameters as well as the linked parameters or combinations
    of these. We expect BAX to become an important tool for the
    astronomical community. BAX will optimize various aspects of the
    scientific analysis of X-ray clusters and groups of galaxies, from
    proposal planning to data collection, interpretation and publication,
    from both ground based facilities like MEGACAM (CFHT), VIRMOS (VLT)
    and space missions like XMM-Newton, Chandra and Planck.

File Summary:

FileName Lrecl Records Explanations
× 80 . This file × ReadMe 80 . This file × bax.dat 155 1713 Main parameters of the BAX database
See also: http://webast.ast.obs-mip.fr/bax/ : The BAX database Byte-by-byte Description of file: bax.dat
Bytes Format Units Label Explanations
1- 23 A23 --- Name Name of cluster 25- 32 F8.4 deg RAdeg ?=-99.99 Right ascension (J2000) 34- 41 F8.4 deg DEdeg ?=-99.99 Declination (J2000) 43- 49 F7.3 --- z ?=-99.99 Redshift 51- 61 F11.6 10-15W/m2 Fx ?=-99.99 Flux in the 0.1-2.4keV band 63- 81 A19 --- r_Fx Reference (bibcode) of Fx 83- 92 F10.6 10+37W Lx ?=-99.99 Luminosity in the 0.1-2.4keV band (in 1044erg/s) 94-112 A19 --- r_Lx Reference (bibcode) of Lx 114-119 F6.2 keV Tx ?=-99.99 Temperature of the intracluster gas 121 A1 --- --- [-] 122-127 F6.4 keV e_Tx ? Mean error (lower) on Tx 129 A1 --- --- [+] 130-135 F6.4 keV E_Tx ? Mean error (upper) on Tx 137-155 A19 --- r_Tx Reference (bibcode) of Tx
Acknowledgements: Alain Blanchard, ablancha(at)ast.obs-mip.fr ================================================================================ (End) Francois Ochsenbein [CDS] 07-Aug-2004