AH
A. Helmi
astro-ph.GAastro-ph.SRastro-phastro-ph.COastro-ph.IMastro-ph.EPastro-ph.HEgr-qchep-ph
On Valency
published · living versionsW_mkdvkpre·v1 · currentpublished
Gaia Early Data Release 3: The celestial reference frame (Gaia-CRF3)
with Gaia Collaboration, S. A. Klioner, L. Lindegren, F. Mignard +446
1 version
W_n3mrysq3·v1published
W_hfu5zfks·v1published
W_a7z64yms·v1published
Preprints & journals
271 papers in the corpus · 1996–2026Understanding the formation of alpha-Fe bimodality in the Milky Way using constrained cosmological simulations of the Local Group2610.27985v1 · Anna Genina, Ewoud Wempe, Amina Helmi et al.2026 · 0 citationsarXiv
Alignment of the Milky Way and M31 with their cosmic environment. New insights from constrained Local Group simulations2607.13005v1 · Hanneke C. Woudenberg, Amina Helmi, Ewoud Wempe et al.2026 · 0 citationsarXiv
The metal-poor tail of the APOGEE survey I. Uncovering [Fe/H] < -2.5 stars from the inner Galaxy to the Magellanic Clouds2602.10859v1 · M. Montelius, E. Starkenburg, H. Woudenberg et al.2026 · 2 citationsAstronomy & Astrophysics (2025), Volume 704, id.A44, 16 pp
Contrastive learning of extragalactic stellar streams. Sculpting a latent space of representations with DES DR2 photometry2601.23013v2 · Ernesto Benitez-Walz, Jelle Mes, Juan Mir'o-Carretero et al.2026 · 0 citationsarXiv
Evidence of a massive accretion event 1.8 billion years before the Gaia-Sausage-Enceladus merger2601.18896v2 · Davide Massari, Chiara Zerbinati, Cristiano Fanelli et al.2026 · 3 citationsarXiv
The mass distribution in and around the Local Group2601.17125v1 · Ewoud Wempe, Simon D.M. White, Amina Helmi et al.2026 · 1 citationarXiv
Refining open cluster parameters with Gaia XP metallicities2510.10385v1 · M. Nizovkina, S. S. Larsen, A. G. A. Brown et al.2025 · 2 citationsA&A 703, A100 (2025)
A Walk on the Retrograde Side (WRS) project. II. Chemistry to disentangle in situ and accreted components in Thamnos2510.06332v2 · E. Ceccarelli, D. Massari, M. Palla et al.2025 · 0 citationsarXiv
Precise Asteroseismic Ages for the Helmi Streams2507.01091v1 · Christopher J. Lindsay, Marc Hon, J. M. Joel Ong et al.2025 · 5 citationsarXiv
On the chaos induced by the Galactic bar on the orbits of nearby halo stars2505.20143v1 · Hanneke C. Woudenberg, Amina Helmi2025 · 8 citationsA&A 700, A240 (2025)
Group Accretion in Milky Way-like Stellar Haloes2504.00880v2 · Thomas M. Callingham, Amina Helmi2025 · 2 citationsA&A 700, A175 (2025)
Chronology of our Galaxy from Gaia colour-magnitude diagram fitting (ChronoGal) II. Unveiling the formation and evolution of the kinematically selected Thick and Thin Discs2503.19536v1 · Emma Fern'andez-Alvar, Tom'as Ruiz-Lara, Carme Gallart et al.2025 · 14 citationsA&A 704, A258 (2025)
Chronology of our Galaxy from Gaia colour-magnitude diagram fitting (ChronoGal) -- III. Age and metallicity distribution of Gaia-Sausage-Enceladus stars near the Sun2502.20439v1 · Yllari K. Gonz'alez-Koda, Tom'as Ruiz-Lara, Carme Gallart et al.2025 · 6 citationsA&A 704, A259 (2025)
Unevolved Li-rich stars at low metallicity: a possible formation pathway through novae2502.18552v1 · Tadafumi Matsuno, Alex Kemp, Ataru Tanikawa et al.2025 · 3 citationsA&A 699, A171 (2025)
A Pristine-UNIONS view on the Galaxy: Kinematics of the distant spur feature of the Sagittarius stream traced by Blue Horizontal Branch stars2502.17319v1 · M. Bayer, E. Starkenburg, G. F. Thomas et al.2025 · 7 citationsA&A 701, A117 (2025)
Chemical characterisation of small substructures in the local stellar halo2502.17353v2 · Emma Dodd, Tadafumi Matsuno, Amina Helmi et al.2025 · 4 citationsA&A 700, A154 (2025)
The effect of environment on the mass assembly history of the Milky Way and M312501.08089v1 · Ewoud Wempe, Amina Helmi, Simon D.M. White et al.2025 · 5 citationsA&A 701, A178 (2025)
Characterisation of local halo building blocks: Thamnos and Sequoia2408.13763v2 · Emma Dodd, Tom'as Ruiz-Lara, Amina Helmi et al.2024 · 14 citationsA&A 698, A277 (2025)
First measurement of the triaxiality of the inner dark matter halo of the Milky Way2407.21790v1 · Hanneke C. Woudenberg, Amina Helmi2024 · 6 citationsA&A 691, A277 (2024)
Testing MOND using the dynamics of nearby stellar streams2406.08872v1 · Orlin Koop, Amina Helmi2024 · 0 citationsA&A 689, A57 (2024)
Constrained cosmological simulations of the Local Group using Bayesian hierarchical field-level inference2406.02228v1 · Ewoud Wempe, Guilhem Lavaux, Simon D.M. White et al.2024 · 13 citationsA&A 691, A348 (2024)
On the Galactic rotation curve inferred from the Jeans equations Assessing its robustness using Gaia DR3 and cosmological simulations2405.19028v2 · Orlin Koop, Teresa Antoja, Amina Helmi et al.2024 · 14 citationsA&A 692, A50 (2024)
Euclid. I. Overview of the Euclid mission2405.13491v2 · Y. Mellier, Abdurro'uf, J. A. Acevedo Barroso et al.2024 · 622 citationsA&A 697, A1 (2025)
Filling in the Blanks: A Method to Infer the Substructure Membership and Dynamics of 5D Stars2405.10168v2 · Thomas M. Callingham, Amina Helmi2024 · 0 citationsA&A 690, A98 (2024)
The 33 M black hole Gaia BH3 is part of the disrupted ED-2 star cluster2404.11604v2 · E. Balbinot, E. Dodd, T. Matsuno et al.2024 · 27 citationsA&A 687, L3 (2024)
Discovery of a dormant 33 solar-mass black hole in pre-release Gaia astrometry2404.10486v2 · P. Panuzzo, T. Mazeh, F. Arenou et al.2024 · 139 citationsarXiv
The Wide-field Spectroscopic Telescope (WST) Science White Paper2403.05398v2 · Vincenzo Mainieri, Richard I. Anderson, Jarle Brinchmann et al.2024 · 15 citationsarXiv
Chronology of our Galaxy from Gaia Colour-Magnitude Diagram-fitting (ChronoGal). I. The formation and evolution of the thin disk from the Gaia Catalogue of Nearby Stars2402.09399v1 · C. Gallart, F. Surot, S. Cassisi et al.2024 · 43 citationsA&A 687, A168 (2024)
The density of the Milky Way's corona at through ram pressure stripping of the Draco dSph galaxy2401.08563v2 · Asger Gr\onnow, Filippo Fraternali, Federico Marinacci et al.2024 · 0 citationsarXiv
Gaia Focused Product Release: A catalogue of sources around quasars to search for strongly lensed quasars2310.06295v1 · A. Krone-Martins, C. Ducourant, L. Galluccio et al.2023 · 7 citationsA&A 685, A130 (2024)
Gaia Focused Product Release: Sources from Service Interface Function image analysis -- Half a million new sources in omega Centauri2310.06551v2 · K. Weingrill, A. Mints, J. Castaneda et al.2023 · 17 citationsA&A 680, A35 (2023)
Gaia Focused Product Release: Radial velocity time series of long-period variables2310.06051v1 · M. Trabucchi, N. Mowlavi, T. Lebzelter et al.2023 · 23 citationsarXiv
ED-2: a cold but not so narrow stellar stream crossing the Solar neighbourhood2306.02756v2 · E. Balbinot, A. Helmi, T. Callingham et al.2023 · 17 citationsA&A 678, A115 (2023)
A 3D view of dwarf galaxies with Gaia and VLT/FLAMES I. The Sculptor dwarf spheroidal2304.11980v1 · Eline Tolstoy, 'Asa Sk'ulad'ottir, Giuseppina Battaglia et al.2023 · 25 citationsA&A 675, A49 (2023)
Hidden deep in the halo: selection of a reduced proper motion halo catalogue and mining retrograde streams in the velocity space2302.00053v2 · Akshara Viswanathan, Else Starkenburg, Helmer H. Koppelman et al.2023 · 10 citationsarXiv
Improving metallicity estimates for very metal-poor stars in the Gaia DR3 GSP-Spec catalog2212.11639v2 · Tadafumi Matsuno, Else Starkenburg, Eduardo Balbinot et al.2022 · 10 citationsarXiv
The wide-field, multiplexed, spectroscopic facility WEAVE: Survey design, overview, and simulated implementation2212.03981v2 · Shoko Jin, Scott C. Trager, Gavin B. Dalton et al.2022 · 221 citationsarXiv
Gaia Data Release 3: Summary of the content and survey properties2208.00211v1 · A. Vallenari, A.G.A. Brown, T. Prusti et al.2022 · 4,320 citationsarXivon Valency
Gaia Data Release 3: Reflectance spectra of Solar System small bodies2206.12174v1 · L. Galluccio, M. Delbo, F. De Angeli et al.2022 · 5 citationsarXiv
The Gaia DR3 view of dynamical substructure in the stellar halo near the Sun2206.11248v2 · Emma Dodd, Thomas M. Callingham, Amina Helmi et al.2022 · 78 citationsA&A 670, L2 (2023)
Gaia Data Release 3: A Golden Sample of Astrophysical Parameters2206.05870v1 · O.L. Creevey, L.M. Sarro, A. Lobel et al.2022 · 43 citationsA&A 674, A39 (2023)on Valency
Gaia Data Release 3: Catalogue Validation2206.05989v1 · C. Babusiaux, C. Fabricius, S. Khanna et al.2022 · 192 citationsA&A 674, A32 (2023)
Gaia Data Release 3: Pulsations in main sequence OBAF-type stars2206.06075v2 · J. De Ridder, V. Ripepi, C. Aerts et al.2022 · 60 citationsA&A 674, A36 (2023)
Gaia Data Release 3: Mapping the asymmetric disc of the Milky Way2206.06207v3 · R. Drimmel, M. Romero-Gomez, L. Chemin et al.2022 · 150 citationsA&A 674, A37 (2023)on Valency
Gaia Data Release 3: The extragalactic content2206.05681v1 · C.A.L. Bailer-Jones, D. Teyssier, L. Delchambre et al.2022 · 98 citationsarXiv
Gaia Data Release 3: Chemical cartography of the Milky Way2206.05534v1 · A. Recio-Blanco, G. Kordopatis, P. de Laverny et al.2022 · 68 citationsA&A 674, A38 (2023)
Gaia Data Release 3: Stellar multiplicity, a teaser for the hidden treasure2206.05595v1 · F. Arenou, C. Babusiaux, M.A. Barstow et al.2022 · 292 citationsA&A 674, A34 (2023)
Unveiling the past evolution of the progenitor of the Helmi streams2205.13810v2 · T. Ruiz-Lara, A. Helmi, C. Gallart et al.2022 · 16 citationsA&A 668, L10 (2022)
Gaia Early Data Release 3: The celestial reference frame (Gaia-CRF3)2204.12574v2 · S.A. Klioner, L. Lindegren, F. Mignard et al.2022 · 114 citationsA&A 667, A148 (2022)on Valency
High-precision chemical abundances of Galactic building blocks. II. Revisiting the chemical distinctness of the Helmi streams2203.11808v2 · Tadafumi Matsuno, Emma Dodd, Helmer H. Koppelman et al.2022 · 31 citationsA&A 665, A46 (2022)
Career total: at least 748 works. 271 are in this corpus.Showing the 50 most recent.
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