Publications
Four published papers in Astronomy and Astrophysics, with my contribution to each stated.
Explainers
What each paper found and what I did, written for readers outside astronomy.
2025 · first authorESO/S. Brunier, CC BY 4.0Manifold learning for stellar populations
In a simulated Milky Way, a method that needs no labels told disc from halo stars and, in error-free data, found the debris of two swallowed galaxies.
2026 · co-author (6 of 24)K-dwarf oscillations with ESPRESSO
Two nearby stars smaller and cooler than the Sun oscillate more weakly than the rule for Sun-like stars predicts, and 3D simulations do not reproduce this.
2024 · co-author (24 of 28)ESO/M. Zamani, CC BY 4.0Oscillations of the dwarf ε Indi
The ESPRESSO spectrograph detected three-minute oscillations in ε Indi, a nearby star cooler than any other dwarf whose oscillations had been measured.
2022 · co-author (16 of 19)ESA, CC BY-SA 3.0 IGOAriel host-star parameters
One method gave consistent temperatures, gravities and metal content for 187 planet-host stars, and roughly halved the uncertainty on their masses.
2022 · MSc dissertationMasses and ages of Ariel stars
Adding a star's oscillation frequencies, or an accurate luminosity, tightens the mass and age that stellar models give for Sun-like planet hosts, by an amount that depends on how well their temperature and metal content are known.
First author
- 2025first author
Dissecting stellar populations with manifold learning I. Validation of the method on a synthetic Milky Way-like galaxy
Plain-language explainerdoi:10.1051/0004-6361/202451718arXiv:2501.16294Appendix · doi:10.5281/zenodo.14749285
Co-author
- 2026co-author 6/24
EPRV asteroseismology of the K dwarfs GJ 570 A and GJ 783 A with ESPRESSO. Empirical mode-amplitude scaling in tension with 3D convection simulations
My contribution: Carried out the GJ 570 A ESPRESSO observations at Paranal (visitor mode, May 2024).
Plain-language explainerdoi:10.1051/0004-6361/202660350arXiv:2610.20985
- 2024co-author 24/28
Expanding the frontiers of cool-dwarf asteroseismology with ESPRESSO
My contribution: Bayes-factor test for the presence of a power excess against a model without one (Appendix D).
- 2022co-author 16/19
Ariel stellar characterisation I. Homogeneous stellar parameters of 187 FGK planet host stars
My contribution: Bayesian PARAM runs for a subset of the sample.
In preparation
- 2026 in preparation
JANUS: calibrated stellar parameters and abundances of red giants from Gaia XP spectra
Describes JANUS and its calibrated per-star parameters and abundances for red giants from Gaia XP spectra, in preparation.
- 2026 in preparation
HAYDNsim: an end-to-end stellar-field and photometric-noise simulation framework for the HAYDN mission concept
Describes HAYDNsim and tests the HAYDN crowded-field noise requirement on three globular clusters, in preparation.
Thesis and data
- Jan 2025 data
Appendix: Dissecting stellar populations with manifold learning I. Validation of the method on a synthetic Milky Way-like galaxy
Supplementary appendix of the A&A 2025 paper, deposited on Zenodo.
- Dec 2022 MSc thesis
Determination of age and mass for seismic stars in the Ariel input catalog