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Strong lensing models of eight CLASH clusters from extensive spectroscopy
- Source :
- Caminha, G B, Rosati, P, Grillo, C, Rosani, G, Caputi, K I, Meneghetti, M, Mercurio, A, Balestra, I, Bergamini, P, Biviano, A, Nonino, M, Umetsu, K, Vanzella, E, Annunziatella, M, Broadhurst, T, Delgado-Correal, C, Demarco, R, Koekemoer, A M, Lombardi, M, Maier, C, Verdugo, M & Zitrin, A 2019, ' Strong lensing models of eight CLASH clusters from extensive spectroscopy: Accurate total mass reconstructions in the cores ', Astronomy & Astrophysics, vol. 632, A36 . https://doi.org/10.1051/0004-6361/201935454, Astronomy & astrophysics, 632:A36. EDP Sciences
- Publication Year :
- 2019
-
Abstract
- We carry out a detailed strong lensing analysis of a sub-sample of eight galaxy clusters of the CLASH survey, in the redshift range of $ z_{\rm cluster} = [0.23-0.59]$, using extensive spectroscopic information, primarily MUSE archival data complemented with CLASH-VLT redshift measurements. Different models are tested in each cluster depending on the complexity of its mass distribution and on the number of detected multiple images. Four clusters show more than five spectroscopically confirmed multiple image families. In this sample, we do not make use of families that are only photometrically identified, in order to reduce model degeneracies and systematics due to the potential misidentifications of some multiple images. We present spectroscopic confirmation of 27 multiply lensed sources, with no previous spectroscopic measurements, spanning over the redshift range of $z_{\rm src}=[0.7-6.1]$. Moreover, we confirm an average of $48$ galaxy members in the core of each cluster, thanks to the high efficiency and large field of view of MUSE. Despite having different properties (i.e., number of mass components, total mass, redshift, etc), the projected total mass and mass density profiles of all clusters have very similar shapes, when rescaled by independent measurements of $M_{200c}$ and $R_{200c}$. Specifically, we measure the mean value of the projected total mass of our cluster sample within 10 (20)% of $R_{200c}$ to be 0.13 (0.32) of $M_{200c}$, with a remarkably small scatter of 5 (6)%. Furthermore, the large number of high-z sources and the precise magnification maps derived in this work for four clusters add up to the sample of high-quality gravitational telescopes to be used to study the faint and distant Universe. The strong lensing models and the full redshift catalogues from MUSE are publicly available.<br />Comment: 27 pages, 9 figures, 7 tables, updated to match the published version. Full redshift catalogue and lensing models are available at http://cdsarc.u-strasbg.fr/viz-bin/cat/J/A+A/632/A36
- Subjects :
- Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Dark matter
Galaxies: clusters: general
Gravitational lensing: strong
FOS: Physical sciences
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
dark matter
NO
0103 physical sciences
Cluster (physics)
DARK-MATTER
clusters: general [galaxies]
010303 astronomy & astrophysics
Galaxy cluster
Physics
BARYONS
Mass distribution
010308 nuclear & particles physics
galaxies: clusters: general
gravitational lensing: strong
Astronomy and Astrophysics
Multi Unit Spectroscopic Explorer
Astrophysics - Astrophysics of Galaxies
Galaxy
Redshift
GALAXY
DENSITY PROFILES
Space and Planetary Science
strong [gravitational lensing]
Astrophysics of Galaxies (astro-ph.GA)
RX J1347.5-1145
HALO
Cluster sampling
Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
Details
- Language :
- English
- ISSN :
- 00046361
- Volume :
- 632
- Database :
- OpenAIRE
- Journal :
- Astronomy & astrophysics
- Accession number :
- edsair.doi.dedup.....14d36d1938b70c9d41cb2bddca35e597