SDSS DR8 redMaPPer clusters Chandra follow-up

DOI

In order to place constraints on cosmology through optical surveys of galaxy clusters, one must first understand the properties of those clusters. To this end, we introduce the Mass Analysis Tool for Chandra (MATCha), a pipeline that uses a parallellized algorithm to analyze archival Chandra data. MATCha simultaneously calculates X-ray temperatures and luminosities and performs centering measurements for hundreds of potential galaxy clusters using archival X-ray exposures. We run MATCha on the redMaPPer SDSS DR8 cluster catalog and use MATCha's output X-ray temperatures and luminosities to analyze the galaxy cluster temperature-richness, luminosity-richness, luminosity-temperature, and temperature-luminosity scaling relations. We detect 447 clusters and determine 246 r_2500_ temperatures across all redshifts. Within 0.1<z<0.35, we find that r_2500_ T_X_ scales with optical richness ({lambda}) as ln(k_B_T_X_/1.0keV)=(0.52+/-0.05)ln({lambda}/70)+(1.85+/-0.03) with an intrinsic scatter of 0.27+/-0.02 (1{sigma}). We investigate the distribution of offsets between the X-ray center and redMaPPer center within 0.1<z<0.35, finding that 68.3%+/-6.5% of clusters are well-centered. However, we find a broad tail of large offsets in this distribution, and we explore some of the causes of redMaPPer miscentering.

Cone search capability for table J/ApJS/244/22/matchacat (MATCha cluster data, scaling relations information and centering information (Tables 5, 6 and 7))

Identifier
DOI http://doi.org/10.26093/cds/vizier.22440022
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/ApJS/244/22
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/244/22
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/244/22
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/ApJS/244/22
Provenance
Creator Hollowood D.L.; Jeltema T.; Chen X.; Farahi A.; Evrard A.; Everett S.,Rozo E.; Rykoff E.; Bernstein R.; Bermeo-Hernandez A.; Eiger L.; Giles P.,Israel H.; Michel R.; Noorali R.; Romer A.K.; Rooney P.; Splettstoesser M.
Publisher CDS
Publication Year 2020
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Cosmology; Galactic and extragalactic Astronomy; Natural Sciences; Observational Astronomy; Physics