Access to Astronomical Catalogues

J/A+A/423/449       RASS-SDSS Galaxy Clusters Survey. I.       (Popesso+, 2004)
RASS-SDSS Galaxy Clusters Survey.
I. The Catalog and the correlation of X-ray and optical properties.
    Popesso P., Bohringer H., Brinkmann J., Voges W., York D.G.
   <Astron. Astrophys. 423, 449 (2004)>
   =2004A&A...423..449P
ADC_Keywords:  Clusters, galaxy ; X-ray sources ; Redshifts

Keywords: galaxies: clusters: general -
          galaxies: luminosity function, mass function -
          methods: observational

Description:
    The tables list the optical and X-rays properties of the RASS-SDSS
    galaxy clusters catalog. The catalog contains 114 X-ray selected
    systems in the area observed by the Sloan Digital Sky Survey (SDSS).
    The X-ray data are taken from the ROSAT All Sky Survey (RASS, IX/10)
    while the optical data are taken from the SDSS (J/AJ/123/567)
    archive.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        94      114   X-ray properties of the RASS-SDSS clusters
table2.dat        69      114   Optical properties
table3.dat        67      114   Optical structural parameters


See also:
         IX/10  : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)
  J/AJ/123/567  : SDSS quasar catalog. I: Early Data Release (Schneider+, 2002)
  J/AJ/126/2579 : SDSS quasar catalog. II. First data release (Schneider+, 2003)
  J/A+A/420/61  : RASS/SDSS X-ray clusters of galaxies (Schuecker+, 2004)


Byte-by-byte Description of file: table1.dat

   Bytes Format Units      Label     Explanations

   1-  3  A3    ---        ---       [RXC]
   4- 15  A12   ---        RXC       ROSAT name (JHHMM.m+DDMM)
  17- 31  A15   ---        Name      Alternative name
      32  A1    ---        n_Name    [*] Note on Name (1)
  33- 40  F8.4  deg        RAdeg     Right ascension J2000
  42- 49  F8.4  deg        DEdeg     Declination J2000
  51- 55  F5.3  ---        z         Redshift
  57- 62  F6.3  10-14W/m2  FX        Flux (0.1-2.4keV)
  64- 69  F6.3  10-14W/m2  FXc       Corrected flux
  71- 75  F5.1  %          e_FX      1 sigma Poissonian in percents
  77- 81  F5.2  10+37W     LX        X-ray luminosity (0.1-2.4keV)
  83- 86  F4.2  s-1        CR        Count rate
  88- 91  F4.1  arcmin     Rout      Outer radius of the clusters

Note (1): Erroneous alternative name:
           RXCJ0845.3+4430: HGC 35 modified into HCG 35
           RXCJ1326.2+0013 was erroneously identified to A1679
           RXCJ1627.6+4055: A2127 modified into A2197
           RXCJ1640.3+4642: A2199 modified into A2219
           RXCJ2324.3+1439 was erroneously identified to A2670,
            should be identified to A2593
            (see Ebeling et al., 1996, J/MNRAS/281/799)
           Modifications made on 14-Oct-2004


Byte-by-byte Description of file: table2.dat

   Bytes Format Units        Label     Explanations

   1-  3  A3    ---          ---       [RXC]
   4- 15  A12   ---          RXC       ROSAT name (JHHMM.m+DDMM)
  17- 21  F5.2  ---          alpha     Schechter slope (1)
  23- 26  F4.2  ---          e_alpha   Error of alpha
  28- 33  F6.2  ---          M*        Schechter M* parameter (1)
  35- 38  F4.2  ---          e_M*      Error of M*
  40- 44  I5    deg-2        rho       Galaxy density
  46- 48  F3.1  ---          chi2      Reduced chi squared
  50- 53  F4.2  10+12solLum  LF        Cluster optical luminosity (2)
  55- 58  F4.2  10+12solLum  e_LF      Error in the LF
  60- 63  F4.2  10+12solLum  LC        Cluster optical luminosity (2)
  65- 68  F4.2  10+12solLum  e_LC      Error in the LC

Note (1): Schechter luminosity function,
        φ(M)dM =
    0.1ln(10)Ncluφ* x 10^-0.4(M-M*)(alpha-1) x exp(-10-0.4(M-M*)dM
      where Nclu is the number of cluster galaxies,
      φ* is the normalization of the Schechter luminosity function.
Note (2): The LF luminosity is calculated with the fit based method,
    while the LC luminosity is calculated with the galaxy number counts.


Byte-by-byte Description of file: table3.dat

   Bytes Format Units     Label     Explanations

   1- 15  A15   ---       RXC       ROSAT name
  17- 20  F4.2  ---       beta      King profile slope
  22- 25  F4.2  ---       e_beta    Error of beta
  27- 31  I5    deg-2     sigma0    ? Central galaxy density
  33- 37  I5    deg-2     sigmab    Background galaxy density
  39- 42  I4    deg-2     e_sigmab  Error of sigmab
  44- 47  F4.2  Mpc       rc        Core radius
  49- 52  F4.2  Mpc       e_rc      Error in the core radius
  54- 57  F4.2  Mpc       rtot      Total cluster radius
  59- 62  F4.2  Mpc       rh        Half-light radius
  64- 67  F4.2  Mpc       e_rh      Error in rh


History: Five names modified in table1 on 14-Oct-2004


Acknowledgements: Paola Popesso 

(End)                                        Patricia Vannier [CDS]  01-Jun-2004