Mass Calibration of the CODEX Cluster Sample using SPIDERS Spectroscopy — II. The X-ray Luminosity-Mass Relation. (arXiv:1910.04773v1 [astro-ph.CO])
<a href="http://arxiv.org/find/astro-ph/1/au:+Capasso_R/0/1/0/all/0/1">R. Capasso</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Mohr_J/0/1/0/all/0/1">J. J. Mohr</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Saro_A/0/1/0/all/0/1">A. Saro</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Biviano_A/0/1/0/all/0/1">A. Biviano</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Clerc_N/0/1/0/all/0/1">N. Clerc</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Finoguenov_A/0/1/0/all/0/1">A. Finoguenov</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Klein_M/0/1/0/all/0/1">M. Klein</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Grandis_S/0/1/0/all/0/1">S. Grandis</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Collins_C/0/1/0/all/0/1">C. Collins</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Damsted_S/0/1/0/all/0/1">S. Damsted</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kirkpatrick_C/0/1/0/all/0/1">C. Kirkpatrick</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kukkola_A/0/1/0/all/0/1">A. Kukkola</a>
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}}$,
$text{B}_{rm{X}}=2.5pm0.2(pm0.07)$,
$gamma_{rm{X}}=-2.6^{+1.1}_{-1.2}(pm0.74)$, where we include systematic
uncertainties in parentheses and for a pivot mass and redshift of
$3times10^{14}M_odot$ 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, extending the validity of our results to a wider
range of redshifts and cluster masses.
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}}$,
$text{B}_{rm{X}}=2.5pm0.2(pm0.07)$,
$gamma_{rm{X}}=-2.6^{+1.1}_{-1.2}(pm0.74)$, where we include systematic
uncertainties in parentheses and for a pivot mass and redshift of
$3times10^{14}M_odot$ 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, extending the validity of our results to a wider
range of redshifts and cluster masses.
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