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)
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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)
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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
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(End) Francois Ochsenbein [CDS] 07-Aug-2004