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Article Dans Une Revue Monthly Notices of the Royal Astronomical Society Année : 2020

Mass calibration of the CODEX cluster sample using SPIDERS spectroscopy – II. The X-ray luminosity–mass relation

R. Capasso
J.J. Mohr
  • Fonction : Auteur
A. Saro
A. Biviano
A. Finoguenov
M. Klein
  • Fonction : Auteur
S. Grandis
  • Fonction : Auteur
C. Collins
  • Fonction : Auteur
S. Damsted
  • Fonction : Auteur
C. Kirkpatrick
  • Fonction : Auteur
A. Kukkola
  • Fonction : Auteur

Résumé

We perform the calibration of the X-ray luminosity–mass scaling relation on a sample of 344 CODEX clusters with z < 0.66 using the dynamics of their member galaxies. Spectroscopic follow-up measurements have been obtained from the SPIDERS survey, leading to a sample of 6658 red member galaxies. We use the Jeans equation to calculate halo masses, assuming an NFW mass profile and analysing a broad range of anisotropy profiles. With a scaling relation of the form |$L_{\rm {X}} \propto \text{A}_{\rm {X}}M_{\text{200c}}^{\text{B}_{\rm {X}}} E(z)^2 (1+z)^{\gamma _{\rm {X}}}$|⁠, we find best-fitting parameters |$\text{A}_{\rm {X}}=0.62^{+0.05}_{-0.06} (\pm 0.06)\times 10^{44}\, \mathrm{erg\, s^{-1}}$|⁠, |$\text{B}_{\rm {X}}=2.35^{+0.21}_{-0.18}(\pm 0.09)$|⁠, |$\gamma _{\rm {X}}=-2.77^{+1.06}_{-1.05}(\pm 0.79)$|⁠, where we include systematic uncertainties in parentheses and for a pivot mass and redshift of |$3\times 10^{14}\, \mathrm{M}_\odot$| and 0.16, respectively. We compare our constraints with previous results, and we combine our sample with the SPT SZE-selected cluster subsample observed with XMM–Newton  extending the validity of our results to a wider range of redshifts and cluster masses.
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Dates et versions

hal-02431569 , version 1 (26-08-2022)

Identifiants

Citer

R. Capasso, J.J. Mohr, A. Saro, A. Biviano, N. Clerc, et al.. Mass calibration of the CODEX cluster sample using SPIDERS spectroscopy – II. The X-ray luminosity–mass relation. Monthly Notices of the Royal Astronomical Society, 2020, 494 (2), pp.2736-2746. ⟨10.1093/mnras/staa888⟩. ⟨hal-02431569⟩
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