Mass Calibration of the CODEX Cluster Sample using SPIDERS Spectroscopy - II. The X-ray Luminosity-Mass Relation

Capasso, R.
Mohr, J.J.
Saro, A.
Biviano, A.
Clerc, N.
Finoguenov, A.
Klein, M.
Grandis, S.
Collins, C.
Damsted, S.
Kirkpatrick, C.
Kukkola, A.

Publication date

January 2020

Publisher

HAL CCSD

Abstract

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 6,658 red member galaxies. We use the Jeans equation to calculate halo masses, assuming an NFW mass profile and analyzing 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 fit parameters $ \text{A}_{\rm{X}}=5.7^{+0.4}_{-0.5} (\pm0.6)\times10^{43}\,\mathrm{erg\,s^{-1}}$, $\text{B}_{\rm{X}}=2.5\pm0.2(\pm0.07)$, $\gamma_{\rm{X}}=-2.6^{+1...