J/A+A/555/A66     Baryons from groups and clusters of galaxies   (Lagana+, 2013)
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A comprehensive picture of baryons in groups and clusters of galaxies.
    Lagana T.F., Martinet N., Durret F., Lima Neto G.B., Maughan B.,
    Zhang Y.-Y.
   <Astron. Astrophys., 555, A66 (2013)>
   =2013A&A...555A..66L
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ADC_Keywords: Clusters, galaxy ; Redshifts
Keywords: galaxies: clusters: general - cosmological parameters -
          galaxies: clusters: intracluster medium

Abstract:
    Based on XMM-Newton, Chandra, and SDSS data, we investigate the baryon
    distribution in groups and clusters and its use as a cosmological
    constraint. For this, we considered a sample of 123 systems with
    temperatures kT_500_=1.0-9.0keV, total masses in the mass range
    M_500_=(~10^13^-4x10^15^)h_70_^-1^M_{sun}_, and redshifts 0.02<z<1.3.
    The gas masses and total masses are derived from X-ray data under the
    assumption of hydrostatic equilibrium and spherical symmetry. The
    stellar masses are based on SDSS-DR8 optical photometric data. For the
    37 systems out of 123 that had both optical and X-ray data available,
    we investigated the gas, stellar, and total baryon mass fractions
    inside r2500 and r500 and the differential gas mass fraction within
    the spherical annulus between r2500 and r500, as a function of total
    mass. For the other objects, we investigated the gas mass fraction
    only.

Description:
    In the present work, we analyse the sample of 114 clusters from
    Maughan et al. (2008, cat. J/ApJS/174/117), which were updated in M12,
    in the redshift range 0.11<z<1.3 and with temperatures ranging
    from 2.0keV up to 8.9keV. 28 out of 114 have optical data available.

File Summary:
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 FileName   Lrecl  Records  Explanations
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ReadMe         80        .  This file
table1a.dat   124        9  General properties, X-ray parameters and stellar
                             masses derived for our sample for groups
table1b.dat   129      117  General properties, X-ray parameters and stellar
                             masses derived for our sample for clusters from M12
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See also:
  J/ApJS/174/117 : Properties and metal abundances of clusters (Maughan+, 2008)

Byte-by-byte Description of file: table1a.dat
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   Bytes Format Units      Label    Explanations
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   1- 15  A15   ---        Name     Group name
  17- 21  F5.3  ---        z        Redshift
  23- 24  I2    h          RAh      Right ascension (J2000)
  26- 27  I2    min        RAm      Right ascension (J2000)
  29- 32  F4.1  s          RAs      Right ascension (J2000)
      34  A1    ---        DE-      Declination sign (J2000)
  35- 36  I2    deg        DEd      Declination (J2000)
  38- 39  I2    arcmin     DEm      Declination (J2000)
  41- 42  I2    arcsec     DEs      Declination (J2000)
  44- 48  F5.1  kpc        r2500    Radius inside which the mean density is
                                     higher than the critical value by a factor
                                     of 2500 in kpc/h_70_
  50- 54  F5.1  kpc        r500     Radius inside which the mean density is
                                     higher than the critical value by a factor
                                     of 500 in kpc/h_70_
  56- 59  F4.2  keV        <kT>     Mean gaz temperature
  61- 64  F4.2  keV      e_<kT>     rms uncertainty on <kT>
  66- 69  F4.2 10+12Msun   Mg2500   Gaz mass inside r2500
  71- 74  F4.2 10+12Msun e_Mg2500   rms uncertainty on Mg2500
  76- 79  F4.2 10+12Msun   Mg500    Gaz mass inside r500
  81- 84  F4.2 10+12Msun e_Mg500    rms uncertainty on Mg500
  86- 89  F4.2 10+13Msun   Mt2500   Total mass inside r2500
  91- 94  F4.2 10+13Msun e_Mt2500   rms uncertainty on Mt2500
  96- 99  F4.2 10+13Msun   Mt500    Total mass inside r500
 101-104  F4.2 10+13Msun e_Mt500    rms uncertainty on Mt500
 106-109  F4.2 10+12Msun   Ms2500   Stellar mass inside r2500
 111-114  F4.2 10+12Msun e_Ms2500   rms uncertainty on Ms2500
 116-119  F4.2 10+12Msun   Ms500    Stellar mass inside r500
 121-124  F4.2 10+12Msun e_Ms500    rms uncertainty on Ms500
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Byte-by-byte Description of file: table1b.dat
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   Bytes Format Units      Label    Explanations
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   1- 16  A16   ---        Name     Cluster name
  18- 21  F4.2  ---        z        Redshift
  23- 24  I2    h          RAh      Right ascension (J2000)
  26- 27  I2    min        RAm      Right ascension (J2000)
  29- 34  F6.3  s          RAs      Right ascension (J2000)
      36  A1    ---        DE-      Declination sign (J2000)
  37- 38  I2    deg        DEd      Declination (J2000)
  40- 41  I2    arcmin     DEm      Declination (J2000)
  43- 47  F5.2  arcsec     DEs      Declination (J2000)
  49- 53  F5.1  kpc        r2500    Radius inside which the mean density is
                                     higher than the critical value by a factor
                                     of 2500 (in kpc/h_70_)
  55- 60  F6.1  kpc        r500     Radius inside which the mean density is
                                     higher than the critical value by a factor
                                     of 500 (in kpc/h_70_)
  62- 65  F4.1  keV        <kT>     Mean gaz temperature
  67- 69  F3.1  keV      e_<kT>     rms uncertainty on <kT>
  71- 74  F4.2 10+13Msun   Mg2500   Gaz mass inside r2500
  76- 79  F4.2 10+13Msun e_Mg2500   rms uncertainty on Mg2500
  81- 84  F4.1 10+13Msun   Mg500    Gaz mass inside r500
  86- 88  F3.1 10+13Msun e_Mg500    rms uncertainty on Mg500
  90- 93  F4.2 10+14Msun   Mt2500   Total mass inside r2500
  95- 98  F4.2 10+14Msun e_Mt2500   rms uncertainty on Mt2500
 100-104  F5.2 10+14Msun   Mt500    Total mass inside r500
 106-109  F4.2 10+14Msun e_Mt500    rms uncertainty on Mt500
 111-114  F4.2 10+13Msun   Ms2500   ? Stellar mass inside r2500
 116-119  F4.2 10+13Msun e_Ms2500   ? rms uncertainty on Ms2500
 121-124  F4.2 10+13Msun   Ms500    ? Stellar mass inside r500
 126-129  F4.2 10+13Msun e_Ms500    ? rms uncertainty on Ms500
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History:
    From electronic version of the journal

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(End)                                      Patricia Vannier [CDS]    25-Oct-2013