Helmi, Amina

Gaia Data Release 2: Summary of the contents and survey properties

Gaia Collaboration, Brown, A. G. A., Vallenari, A., Prusti, T., de Bruijne, J. H. J., Babusiaux, C., Bailer-Jones, C. A. L., Biermann, M., Evans, D. W., Eyer, L., et al. (2018) · Astronomy & Astrophysics

Stellar, planetary, and galactic studiesAstronomy and Astrophysical Research

Cited by 8,442

The merger that led to the formation of the Milky Way’s inner stellar halo and thick disk

Helmi, A., Babusiaux, C., Koppelman, H. H., Massari, D., Veljanoski, J., & Brown, A. G. A. (2018) · Nature

Stellar, planetary, and galactic studiesGalaxies: Formation, Evolution, Phenomena

Cited by 1,235

The diversity and similarity of simulated cold dark matter haloes: Diversity and similarity of simulated CDM haloes

Navarro, J. F., Ludlow, A., Springel, V., Wang, J., Vogelsberger, M., White, S. D. M., Jenkins, A., Frenk, C. S., & Helmi, A. (2010) · Monthly Notices of the Royal Astronomical Society

Galaxies: Formation, Evolution, PhenomenaCosmology and Gravitation Theories

Cited by 860

Gaia Data Release 2: Catalogue validation

Arenou, F., Luri, X., Babusiaux, C., Fabricius, C., Helmi, A., Muraveva, T., Robin, A. C., Spoto, F., Vallenari, A., Antoja, T., et al. (2018) · Astronomy & Astrophysics

Stellar, planetary, and galactic studiesAstronomy and Astrophysical Research

Cited by 601

Debris streams in the solar neighbourhood as relicts from the formation of the Milky Way

Helmi, A., White, S. D. M., de Zeeuw, P. T., & Zhao, H. (1999) · Nature

Stellar, planetary, and galactic studiesGalaxies: Formation, Evolution, Phenomena

Cited by 596

Galactic stellar haloes in the CDM model

Cooper, A. P., Cole, S., Frenk, C. S., White, S. D. M., Helly, J., Benson, A. J., De Lucia, G., Helmi, A., Jenkins, A., Navarro, J. F., et al. (2010) · Monthly Notices of the Royal Astronomical Society

Galaxies: Formation, Evolution, PhenomenaStellar, planetary, and galactic studies

Cited by 594

A dynamically young and perturbed Milky Way disk

Antoja, T., Helmi, A., Romero-Gómez, M., Katz, D., Babusiaux, C., Drimmel, R., Evans, D. W., Figueras, F., Poggio, E., Reylé, C., et al. (2018) · Nature

Stellar, planetary, and galactic studiesGalaxies: Formation, Evolution, Phenomena

Cited by 498

Origin of the system of globular clusters in the Milky Way

Massari, D., Koppelman, H. H., & Helmi, A. (2019) · Astronomy & Astrophysics

Stellar, planetary, and galactic studiesGalaxies: Formation, Evolution, Phenomena

Cited by 441

Streams, Substructures, and the Early History of the Milky Way

Helmi, A. (2020) · Annual Review of Astronomy and Astrophysics

Stellar, planetary, and galactic studiesGalaxies: Formation, Evolution, Phenomena

Cited by 407

Simulations of minor mergers - I. General properties of thick discs

Villalobos, Á., & Helmi, A. (2008) · Monthly Notices of the Royal Astronomical Society

Galaxies: Formation, Evolution, PhenomenaStellar, planetary, and galactic studies

Cited by 325

The Gaia-ESO Survey: the Galactic thick to thin disc transition

Recio-Blanco, A., de Laverny, P., Kordopatis, G., Helmi, A., Hill, V., Gilmore, G., Wyse, R., Adibekyan, V., Randich, S., Asplund, M., et al. (2014) · Astronomy & Astrophysics

Stellar, planetary, and galactic studiesGalaxies: Formation, Evolution, Phenomena

Cited by 241

Mass and shape of the Milky Way’s dark matter halo with globular clusters from Gaia and Hubble

Posti, L., & Helmi, A. (2019) · Astronomy & Astrophysics

Galaxies: Formation, Evolution, PhenomenaStellar, planetary, and galactic studies

Cited by 233

Assembly history and structure of galactic cold dark matter haloes: Assembly and structure of dark matter haloes

Wang, J., Navarro, J. F., Frenk, C. S., White, S. D. M., Springel, V., Jenkins, A., Helmi, A., Ludlow, A., & Vogelsberger, M. (2011) · Monthly Notices of the Royal Astronomical Society

Galaxies: Formation, Evolution, PhenomenaCosmology and Gravitation Theories

Cited by 164

The phase-space structure of cold dark matter haloes: insights into the Galactic halo

Helmi, A., White, S. D. M., & Springel, V. (2003) · Monthly Notices of the Royal Astronomical Society

Galaxies: Formation, Evolution, PhenomenaStellar, planetary, and galactic studies

Cited by 128

Halo Star Streams in the Solar Neighborhood

Kepley, A. A., Morrison, H. L., Helmi, A., Kinman, T. D., Van Duyne, J., Martin, J. C., Harding, P., Norris, J. E., & Freeman, K. C. (2007) · The Astronomical Journal

Stellar, planetary, and galactic studiesGalaxies: Formation, Evolution, Phenomena

Cited by 107

Orbital eccentricity as a probe of thick disc formation scenarios

Sales, L. V., Helmi, A., Abadi, M. G., Brook, C. B., Gómez, F. A., Roškar, R., Debattista, V. P., House, E., Steinmetz, M., & Villalobos, Á. (2009) · Monthly Notices of the Royal Astronomical Society: Letters

Stellar, planetary, and galactic studiesGalaxies: Formation, Evolution, Phenomena

Cited by 98

On the identification of substructure in phase space using orbital frequencies

Gómez, F. A., & Helmi, A. (2010) · Monthly Notices of the Royal Astronomical Society

Galaxies: Formation, Evolution, PhenomenaStellar, planetary, and galactic studies

Cited by 83

Selection of Metal‐poor Giant Stars Using the Sloan Digital Sky Survey Photometric System

Helmi, A., Ivezić, Ž., Prada, F., Pentericci, L., Rockosi, C. M., Schneider, D. P., Grebel, E. K., Harbeck, D., Lupton, R. H., Gunn, J. E., et al. (2003) · The Astrophysical Journal

Stellar, planetary, and galactic studiesGalaxies: Formation, Evolution, Phenomena

Cited by 57

Testing formation mechanisms of the Milky Way's thick disc with RAVE: Testing thick disc formation mechanisms

Wilson, M. L., Helmi, A., Morrison, H. L., Breddels, M. A., Bienaymé, O., Binney, J., Bland-Hawthorn, J., Campbell, R., Freeman, K. C., Fulbright, J. P., et al. (2011) · Monthly Notices of the Royal Astronomical Society

Stellar, planetary, and galactic studiesGalaxies: Formation, Evolution, Phenomena

Cited by 56

Streams in the Aquarius stellar haloes

Gómez, F. A., Helmi, A., Cooper, A. P., Frenk, C. S., Navarro, J. F., & White, S. D. M. (2013) · Monthly Notices of the Royal Astronomical Society

Galaxies: Formation, Evolution, PhenomenaStellar, planetary, and galactic studies

Cited by 56

Simulations of minor mergers - II. The phase-space structure of thick discs

Villalobos, Á., & Helmi, A. (2009) · Monthly Notices of the Royal Astronomical Society

Stellar, planetary, and galactic studiesGalaxies: Formation, Evolution, Phenomena

Cited by 56

The evolution of streams in a time-dependent potential

Buist, H. J. T., & Helmi, A. (2015) · Astronomy & Astrophysics

Galaxies: Formation, Evolution, PhenomenaStellar, planetary, and galactic studies

Cited by 25

Assessing the robustness of the Galactic rotation curve inferred from the Jeans equations using Gaia DR3 and cosmological simulations

Koop, O., Antoja, T., Helmi, A., Callingham, T. M., & Laporte, C. F. P. (2024) · Astronomy & Astrophysics

Stellar, planetary, and galactic studiesGalaxies: Formation, Evolution, Phenomena

Cited by 14