Articles by Geraint F. Lewis

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Geraint F. Lewis

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225

The GALAH survey: Improving chemical abundances using star clusters

10 January 2025 by Janez Kos and others

Astrophysics of Galaxies, Solar and Stellar Astrophysics

Revisiting The Cosmological Time Dilation of Distant Quasars: Influence of Source Properties and Evolution

7 January 2025 by Brendon Brewer and Geraint Lewis

Cosmology and Nongalactic Astrophysics, Instrumentation and Methods for Astrophysics

Cosmic Multipoles in Galaxy Surveys Part I: How Inferences Depend on Source Counts and Masks

17 December 2024 by Oliver Oayda and others

Cosmology and Nongalactic Astrophysics

S^5: New insights from deep spectroscopic observations of the tidal tails of the globular clusters NGC 1261 and NGC 1904

13 November 2024 by Petra Awad and others

Astrophysics of Galaxies

Chemical Abundances in the Leiptr Stellar Stream: A Disrupted Ultra-faint Dwarf Galaxy?

22 October 2024 by Kaia Atzberger and others

Astrophysics of Galaxies, Solar and Stellar Astrophysics

The GALAH Survey: Stellar parameters and abundances for 800,000 Gaia RVS spectra using GALAH DR4 and The Cannon

16 October 2024 by Pradosh Barun Das and others

Astrophysics of Galaxies, Solar and Stellar Astrophysics

Biological arrow of time: Emergence of tangled information hierarchies and self-modelling dynamics

18 September 2024 by Mikhail Prokopenko and others

Populations and Evolution, Formal Languages and Automata Theory

The Cosmic Dipole in the Quaia Sample of Quasars: A Bayesian Analysis

15 August 2024 by Vasudev Mittal and others

Cosmology and Nongalactic Astrophysics

Gravitational Lensing Reveals Cool Gas within 10-20 kpc around a Quiescent Galaxy

15 August 2024 by Tania Barone and others

Astrophysics of Galaxies

AGEL: Is the Conflict Real? Investigating Galaxy Evolution Models using Strong Lensing at 0.3 < z < 0.9

21 June 2024 by Nandini Sahu and others

Astrophysics of Galaxies, Cosmology and Nongalactic Astrophysics

A Bayesian approach to the cosmic dipole in radio galaxy surveys: Joint analysis of NVSS & RACS

4 June 2024 by Oliver Oayda and others at

ASTRON

Cosmology and Nongalactic Astrophysics

Rotation of the Globular Cluster Population of the Dark Matter Deficient Galaxy NGC 1052-DF4: Implication for the Total Mass

16 May 2024 by Brendon Brewer and Geraint Lewis

Instrumentation and Methods for Astrophysics, Astrophysics of Galaxies

The GALAH survey: Tracing the Milky Way's formation and evolution through RR Lyrae stars

7 May 2024 by Valentina D'orazi and others

Astrophysics of Galaxies, Solar and Stellar Astrophysics

The Hierarchical Structure of Galactic Haloes: Differentiating Clusters from Stochastic Clumping with AstroLink

17 April 2024 by William Oliver and others

Astrophysics of Galaxies

The Pristine Inner Galaxy Survey (PIGS) VIII: Characterising the orbital properties of the ancient, very metal-poor inner Milky Way

16 April 2024 by Anke Ardern-Arentsen and others

Astrophysics of Galaxies, Solar and Stellar Astrophysics

A full reconstruction of two galaxy clusters intra-cluster medium with strong gravitational lensing

8 April 2024 by Joseph F. V. Allingham and others

Cosmology and Nongalactic Astrophysics, Astrophysics of Galaxies

Inferring dark matter subhalo properties from simulated subhalo-stream encounters

3 April 2024 by Tariq Hilmi and others

Astrophysics of Galaxies

The Gasing Pangkah Collaboration: I. Asteroseismic Identification and Characterisation of a Rapidly-Rotating Engulfment Candidate

26 February 2024 by J. M. Joel Ong and others

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

The GALAH survey: Elemental abundances in open clusters using joint effective temperature and surface gravity photometric priors

12 February 2024 by Kevin Beeson and others

Astrophysics of Galaxies, Solar and Stellar Astrophysics

The Power of High Precision Broadband Photometry: Tracing the Milky Way Density Profile with Blue Horizontal Branch stars in the Dark Energy Survey

31 January 2024 by Fengqing Yu and others

Astrophysics of Galaxies

Multiple Populations and a CH Star Found in the 300S Globular Cluster Stellar Stream

4 January 2024 by Sam Usman and others at

University of Chicago

Astrophysics of Galaxies, Solar and Stellar Astrophysics

The origin of the metallicity distributions of the NE and W stellar shelves in the Andromeda Galaxy

24 November 2023 by Stanislav Milošević and others at

ASTRON

Astrophysics of Galaxies

The Redshift Difference in Gravitational Lensed Systems: A Novel Probe of Cosmology

15 August 2023 by Chengyi Wang and others

Cosmology and Nongalactic Astrophysics

Testing the Cosmological Principle with CatWISE Quasars: A Bayesian Analysis of the Number-Count Dipole

7 August 2023 by Lawrence Dam and others

Cosmology and Nongalactic Astrophysics, General Relativity and Quantum Cosmology

RomAndromeda: The Roman Survey of the Andromeda Halo

21 June 2023 by Arjun Dey and others

Astrophysics of Galaxies

Detection of the Cosmological Time Dilation of High Redshift Quasars

6 June 2023 by Geraint Lewis and Brendon Brewer

Cosmology and Nongalactic Astrophysics, General Relativity and Quantum Cosmology

Testing the Cosmological Principle: On the Time Dilation of Distant Sources

11 May 2023 by Oliver Oayda and Geraint Lewis

Cosmology and Nongalactic Astrophysics

Joint HST, VLT/MUSE and XMM-Newton observations to constrain the mass distribution of the two strong lensing galaxy clusters: MACS J0242.5-2132 & MACS J0949.8+1708

19 April 2023 by Joseph F. V. Allingham and others

Cosmology and Nongalactic Astrophysics

The GALAH survey: New diffuse interstellar bands found in residuals of 872,000 stellar spectra

29 March 2023 by Rok Vogrincic and others

Astrophysics of Galaxies, Instrumentation and Methods for Astrophysics

Multiverse Predictions for Habitability: Origin of Life Scenarios

5 March 2023 by Mccullen Sandora and others

Populations and Evolution, Earth and Planetary Astrophysics

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Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics Solar and Stellar Astrophysics Instrumentation and Methods for Astrophysics General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena High Energy Physics Earth and Planetary Astrophysics Machine Learning Data Analysis, Statistics and Probability Applications Popular Physics astro-ph Physics Education Populations and Evolution