使用SPIDERS光谱学-- II对CODEX簇样品进行质量校准。X射线的亮度-质量关系
Mass Calibration of the CODEX Cluster Sample using SPIDERS Spectroscopy -- II. The X-ray Luminosity-Mass Relation
摘要：
利用星系团成员的动力学信息，用$z<0.66$对344个CODEX星系团的X射线光度-质量标度关系进行了标定。从天基信息平台巡天中获得了光谱跟踪测量结果，从而获得了6，658个红成员星系的样本。我们使用Jeans方程来计算晕质量，假设NFW质量分布和分析范围广泛的各向异性配置文件。与形式$L_{\rm{X}} \propto \text{A}_{\rm{X}}M_{\text{200c}}^{\text{B}_{\rm{X}}} E(z)^2 (1+z)^{γ_{\rm{X}}}$的标度关系，我们找到最佳拟合参数$ \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)$，$γ_{\rm{X}}=-2.6^{+1.1}_{-1.2}(\pm0.74)$，其中我们包括系统的不确定性在括号中和枢轴质量和红移分别为$3\times10^{14}M_\odot$和0.16。我们比较我们的限制与以前的结果，我们结合我们的样本与SPT SZE-选择集群子样本观察\XMM \，扩展我们的结果的有效性，以更广泛的红移和集群质量。
英文摘要：
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 $L_{\rm{X}} \propto \text{A}_{\rm{X}}M_{\text{200c}}^{\text{B}_{\rm{X}}} E(z)^2 (1+z)^{γ_{\rm{X}}}$, we find best fit parameters $ \text{A}_{\rm{X}}=5.7^{+0.4}_{-0.5} (\pm0.6)\times10^{43}\,\mathrm{erg\,s^{-1}}$, $\text{B}_{\rm{X}}=2.5\pm0.2(\pm0.07)$, $γ_{\rm{X}}=-2.6^{+1.1}_{-1.2}(\pm0.74)$, where we include systematic uncertainties in parentheses and for a pivot mass and redshift of $3\times10^{14}M_\odot$ 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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