Table · dataset · 2023
Stellar mass as a galaxy cluster mass proxy
Listed in IVOA Registry (Virtual Observatory)
We introduce a galaxy cluster mass observable, {mu}_*_, based on the stellar masses of cluster members, and we present results for the Dark Energy Survey (DES) Year 1 (Y1) observations.
Description
Stellar masses are computed using a Bayesian model averaging method, and are validated for DES data using simulations and COSMOS data. We show that {mu}_*_ works as a promising mass proxy by comparing our predictions to X-ray measurements.
We measure the X-ray temperature-{mu}_*_ relation for a total of 129 clusters matched between the wide-field DES Y1 redMaPPer catalogue and Chandra and XMM archival observations, spanning the redshift range 0.1<z<0.7. For a scaling relation that is linear in logarithmic space, we find a slope of {alpha}=0.488+/-0.043 and a scatter in the X-ray temperature at fixed {mu}_*_ of {sigma}_lnTX|{mu}*_= 0.266^+0.019^_-0.020_ for the joint sample.
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By using the halo mass scaling relations of the X-ray temperature from the Weighing the Giants program, we further derive the {mu}_*_-conditioned scatter in mass, finding {sigma}_lnM|{mu}*_=0.26^+0.15^_-0.10_. These results are competitive with well-established cluster mass proxies used for cosmological analyses, showing that {mu}_*_ can be used as a reliable and physically motivated mass proxy to derive cosmological constraints.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/493/4591 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2020MNRAS.493.4591P ui.adsabs.harvard.edu/abs/2020MNRAS.493.4591P ↗
publication · from IVOA Registry
Catalogue records · 2
- VOResource record dc.g-vo.org/oai.xml?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3… ↗
metadata API · from IVOA Registry
- Registry record (GAVO) dc.g-vo.org/I/cds.vizier/j/mnras/493/4591 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- X-Ray
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/mnras/493/4591 | 14 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:x-ray | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| description | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_description |
| license_text | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| publication_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| title | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_title |
| updated_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 |