Search Results - "Acebrón, Ana"
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Strong Lensing Modeling in Galaxy Clusters as a Promising Method to Test Cosmography. I. Parametric Dark Energy Models
Published in The Astrophysical journal (01-10-2018)“…In this paper we probe five cosmological models for which the dark energy equation of state parameter, w(z), is parameterized as a function of redshift using…”
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Stellar Properties of z 8 Galaxies in the Reionization Lensing Cluster Survey
Published in The Astrophysical journal (10-01-2020)“…Measurements of stellar properties of galaxies when the universe was less than one billion years old yield some of the only observational constraints on the…”
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The GLASS-JWST Early Release Science Program. III. Strong-lensing Model of Abell 2744 and Its Infalling Regions
Published in The Astrophysical journal (01-07-2023)“…We present a new high-precision, JWST-based, strong-lensing model for the galaxy cluster Abell 2744 at z = 0.3072. By combining the deep, high-resolution JWST…”
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RELICS: Properties of z ≥ 5.5 Galaxies Inferred from Spitzer and Hubble Imaging, Including A Candidate z ∼ 6.8 Strong [O iii] emitter
Published in The Astrophysical journal (01-04-2021)“…We present constraints on the physical properties (including stellar mass, age, and star formation rate) of 207 6 ≲ z ≲ 8 galaxy candidates from the…”
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Early Results from GLASS-JWST. IX. First Spectroscopic Confirmation of Low-mass Quiescent Galaxies at z > 2 with NIRISS
Published in Astrophysical journal. Letters (01-01-2023)“…How passive galaxies form, and the physical mechanisms which prevent star formation over long timescales, are some of the most outstanding questions in…”
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The Next Step in Galaxy Cluster Strong Lensing: Modeling the Surface Brightness of Multiply Imaged Sources
Published in The Astrophysical journal (01-11-2024)“…Overcoming both modeling and computational challenges, we present, for the first time, the extended surface-brightness distribution model of a strongly lensed…”
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The Extended [C ii] under Construction? Observation of the Brightest High-z Lensed Star-forming Galaxy at z = 6.2
Published in The Astrophysical journal (01-01-2024)“…We present results of [C ii ] 158 μ m emission line observations, and report the spectroscopic redshift confirmation of a strongly lensed ( μ ∼ 20)…”
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Hubble Frontier Fields: systematic errors in strong lensing models of galaxy clusters – implications for cosmography
Published in Monthly notices of the Royal Astronomical Society (11-09-2017)“…Abstract Strong gravitational lensing by galaxy clusters is a fundamental tool to study dark matter and constrain the geometry of the Universe. Recently, the…”
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Probing coherence in metal absorption towards multiple images of strong gravitationally lensed quasars
Published in Monthly notices of the Royal Astronomical Society (23-01-2024)“…ABSTRACT We present a tomographic analysis of metal absorption lines arising from the circumgalactic medium (CGM) of galaxies at z ≈ 0.5–2, using Multi Unit…”
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RELICS: Reionization Lensing Cluster Survey
Published in The Astrophysical journal (10-10-2019)“…Large surveys of galaxy clusters with the Hubble Space Telescope (HST) and Spitzer, including the Cluster Lensing And Supernova survey with Hubble and the…”
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VLT/MUSE Observations of SDSS J1029+2623: Toward a High-precision Strong Lensing Model
Published in The Astrophysical journal (01-02-2022)“…We present a strong lensing analysis of the galaxy cluster SDSS J1029+2623 at z = 0.588, one of the few currently known lens clusters with multiple images of a…”
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Near-infrared characterization of ultra-diffuse galaxies in Abell 2744 by JWST/NIRISS imaging
Published in Monthly notices of the Royal Astronomical Society (22-06-2023)“…ABSTRACT We present a search and characterization of ultra-diffuse galaxies (UDGs) in the Frontier Fields cluster Abell 2744 at $z$ = 0.308. We use JWST/NIRISS…”
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The nature of an ultra-faint galaxy in the cosmic dark ages seen with JWST
Published in Nature (London) (15-06-2023)“…In the first billion years after the Big Bang, sources of ultraviolet (UV) photons are believed to have ionized intergalactic hydrogen, rendering the Universe…”
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Further support for a trio of mass-to-light deviations in Abell 370: free-form grale lens inversion using BUFFALO strong lensing data
Published in Monthly notices of the Royal Astronomical Society (01-10-2021)“…ABSTRACT We use the Beyond Ultra-deep Frontier Fields and Legacy Observations (BUFFALO) strong lensing image catalogue of the merging galaxy cluster Abell 370…”
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Early Results from GLASS-JWST. I: Confirmation of Lensed z ≥ 7 Lyman-break Galaxies behind the Abell 2744 Cluster with NIRISS
Published in Astrophysical journal. Letters (01-10-2022)“…We present the first search for z ≥ 7, continuum-confirmed Lyman break sources with NIRISS/WFS spectroscopy over the Abell 2744 Frontier Fields cluster, as…”
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The Next Step in Galaxy Cluster Strong Lensing: Modeling the Surface Brightness of Multiply Imaged Sources This work is based in large part on data collected at the ESO Very Large Telescope (prog. ID 0102.A-0642(A)) and NASA Hubble Space Telescope
Published in The Astrophysical journal (01-11-2024)Get full text
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CURLING – I. The influence of point-like image approximation on the outcomes of cluster strong lens modelling
Published in Monthly notices of the Royal Astronomical Society (13-05-2024)“…Cluster-scale strong lensing is a powerful tool for exploring the properties of dark matter and constraining cosmological models. However, due to the complex…”
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Pilot-WINGS: An extended MUSE view of the structure of Abell 370
Published in Monthly notices of the Royal Astronomical Society (01-07-2022)“…ABSTRACT We investigate the strong-lensing cluster Abell 370 (A370) using a wide Integral Field Unit (IFU) spectroscopic mosaic from the Multi-Unit…”
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RELICS: Strong Lensing Analysis of MACS J0417.5-1154 and Predictions for Observing the Magnified High-redshift Universe with JWST
Published in The Astrophysical journal (01-03-2019)“…Strong gravitational lensing by clusters of galaxies probes the mass distribution at the core of each cluster and magnifies the universe behind it. MACS…”
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