Table · dataset · 2024
CHEX-MATE. Dynamical masses
Listed in IVOA Registry (Virtual Observatory)
Description
The Cluster HEritage project with XMM-Newton - Mass Assembly and Thermodynamics at the Endpoint of structure formation (CHEX-MATE) is a programme to study a minimally-biased sample of 118 galaxy clusters detected by Planck through the Sunyaev-Zeldovich effect.Accurate and precise mass measurements are required to exploit CHEX-MATE as an astrophysical laboratory and a calibration sample for cosmological probes in the era of large surveys.
We measure masses based on the galaxy dynamics, which are highly complementary to weak-lensing or X-ray estimates.We analyse the sample under a uniform pipeline, stable both for poorly-sampled or rich clusters, using spectroscopic redshifts from public (NED, SDSS, DESI) or private archives, and dedicated observational programmes. We model the halo mass density and the anisotropy profile. Membership is confirmed with a cleaning procedure in phase-space.
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Mass is derived from measured velocity dispersion under the assumed model.We measure dynamical masses for 101 CHEX-MATE clusters with at least 10 confirmed members within the virial radius r_200c. Estimated redshifts and velocity dispersions agree with literature values when available. Validation with weak- lensing masses shows agreement within 8+/-16 (stat.)+/-5(sys.)%, and confirms dynamical masses as an unbiased proxy.Comparison with Planck masses shows them to be biased low by 34+/-3(stat.)+/-5(sys.)%.
A follow-up spectroscopic campaign is underway to cover the full CHEX-MATE sample.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/693/A2 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2025A&A...693A...2S ui.adsabs.harvard.edu/abs/2025A%26A...693A...2S ↗
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/a%2Ba/693/a2 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 7 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/a+a/693/a2 | 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 | |
| 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 |