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

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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 2020 , ' Mass calibration of the CODEX cluster sample using SPIDERS spectroscopy - II. The X-ray luminosity-mass relation ' , Monthly Notices of the Royal Astronomical Society , vol. 494 , no. 2 , pp. 2736-2746 . https://doi.org/10.1093/mnras/staa888

Title: Mass calibration of the CODEX cluster sample using SPIDERS spectroscopy - II. The X-ray luminosity-mass relation
Author: 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.
Contributor: University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
University of Helsinki, Particle Physics and Astrophysics
University of Helsinki, Particle Physics and Astrophysics
Date: 2020-05
Language: eng
Number of pages: 11
Belongs to series: Monthly Notices of the Royal Astronomical Society
ISSN: 0035-8711
URI: http://hdl.handle.net/10138/320661
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 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-X proportional to A(X)M(200c)(BX) E(z)(2)(1 + z)(gamma x), we find best-fitting parameters A(X) = 0.62(-0.06)(+0.05) (+/- 0.06) x 10(44) erg s(-)(1), B-X = 2.35(-0.18)(+0.21)(+/- 0.09), gamma(X) = -2.77(-1.05)(+1.06)(+/- 0.79), where we include systematic uncertainties in parentheses and for a pivot mass and redshift of 3 x 10(14) M-circle dot 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.
Subject: galaxies: clusters: general
galaxies: evolution
galaxies: kinematics and dynamics
large-scale structure of Universe
GALAXY CLUSTERS
DARK-MATTER
SCALING RELATIONS
COSMOLOGICAL PARAMETERS
EFFICIENT
PROFILES
VELOCITY
RASS
TOOL
115 Astronomy, Space science
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