Amina Helmi

Search results

• 2023

  Characterization and dynamics of the peculiar stream Jhelum: A tentative role for the Sagittarius dwarf galaxy

  Woudenberg, H. C., Koop, O., Balbinot, E. & Helmi, A., 1-Jan-2023, In: Astronomy and astrophysics. 669, 17 p., A102.

  Research output: Contribution to journal › Article › Academic › peer-review

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  3 Downloads (Pure)
• 2022

  Age determination of galaxy merger remnant stars using asteroseismology

  Borre, C. C., Aguirre Børsen-Koch, V., Helmi, A., Koppelman, H. H., Nielsen, M. B., Rørsted, J. L., Stello, D., Stokholm, A., Winther, M. L., Davies, G. R., Hon, M., Kruijssen, J. M. D., Laporte, C. F. P., Reyes, C. & Yu, J., 1-Aug-2022, In: Monthly Notices of the Royal Astronomical Society. 514, 2, p. 2527-2544 18 p.

  Research output: Contribution to journal › Article › Academic › peer-review

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  5 Citations (Scopus)

  5 Downloads (Pure)

• Erratum: Galactic potential constraints from clustering in action space of combined stellar stream data

  Reino, S., Rossi, E. M., Sanderson, R. E., Sellentin, E., Helmi, A., Koppelman, H. H. & Sharma, S., May-2022, In: Monthly Notices of the Royal Astronomical Society. 512, p. 4455-4463 9 p.

  Research output: Contribution to journal › Erratum

  Open Access

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  2 Downloads (Pure)

• Gaia Early Data Release 3. The celestial reference frame (Gaia-CRF3)

  Gaia Collaboration, Klioner, S. A., Lindegren, L., Mignard, F., Hernández, J., Ramos-Lerate, M., Bastian, U., Biermann, M., Bombrun, A., de Torres, A., Gerlach, E., Geyer, R., Hilger, T., Hobbs, D., Lammers, U. L., McMillan, P. J., Steidelmüller, H., Teyssier, D., Raiteri, C. M., Bartolomé, S., & 30 othersBernet, M., Castañeda, J., Clotet, M., Davidson, M., Fabricius, C., Garralda Torres, N., González-Vidal, J. J., Portell, J., Rowell, N., Brown, A. G. A., Jansen, F., van Leeuwen, F., Bakker, J., Janßen, K., Smith, M., van Leeuwen, M., Balbinot, E., De Ridder, J., Giuffrida, G., Helmi, A., Khanna, S., Loup, C., Massari, D., Messina, S., Monari, G., Nagy, Z., Robin, A. C., Siebert, A., Slezak, I. & Zhao, H., 1-Nov-2022, In: Astronomy and astrophysics. 667, 31 p., A148.

  Research output: Contribution to journal › Article › Academic › peer-review

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  3 Citations (Scopus)

  3 Downloads (Pure)

• High-precision chemical abundances of Galactic building blocks: II. Revisiting the chemical distinctness of the Helmi streams

  Matsuno, T., Dodd, E., Koppelman, H. H., Helmi, A., Ishigaki, M. N., Aoki, W., Zhao, J., Yuan, Z. & Hattori, K., Sept-2022, In: Astronomy and astrophysics. 665, 13 p., A46.

  Research output: Contribution to journal › Article › Academic › peer-review

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  2 Citations (Scopus)

  11 Downloads (Pure)

• High-precision chemical abundances of Galactic building blocks: The distinct chemical abundance sequence of Sequoia

  Matsuno, T., Koppelman, H. H., Helmi, A., Aoki, W., Ishigaki, M. N., Suda, T., Yuan, Z. & Hattori, K., May-2022, In: Astronomy and astrophysics. 661, 21 p., A103.

  Research output: Contribution to journal › Article › Academic › peer-review

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  4 Citations (Scopus)

  23 Downloads (Pure)

• Substructure in the stellar halo near the Sun: I. Data-driven clustering in integrals-of-motion space

  Lövdal, S. S., Ruiz-Lara, T., Koppelman, H. H., Matsuno, T., Dodd, E. & Helmi, A., Sept-2022, In: Astronomy and astrophysics. 665, 16 p., A57.

  Research output: Contribution to journal › Article › Academic › peer-review

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  7 Citations (Scopus)

  15 Downloads (Pure)

• Substructure in the stellar halo near the Sun. II. Characterisation of independent structures

  Ruiz-Lara, T., Matsuno, T., Lövdal, S. S., Helmi, A., Dodd, E. & Koppelman, H. H., 1-Sept-2022, In: Astronomy and astrophysics. 665, 35 p., A58.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  5 Citations (Scopus)

  1 Downloads (Pure)

• Substructures, resonances, and debris streams: A new constraint on the inner shape of the Galactic dark halo

  Dodd, E., Helmi, A. & Koppelman, H. H., 1-Mar-2022, In: Astronomy and astrophysics. 659, 10 p., A61.

  Research output: Contribution to journal › Article › Academic › peer-review

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  5 Citations (Scopus)

  7 Downloads (Pure)

• Unveiling the past evolution of the progenitor of the Helmi streams

  Ruiz-Lara, T., Helmi, A., Gallart, C., Surot, F. & Cassisi, S., 1-Dec-2022, In: Astronomy and astrophysics. 668, p. L10 7 p.

  Research output: Contribution to journal › Article › Academic › peer-review

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  3 Downloads (Pure)
• 2021

  Corrigendum: Gaia Early Data Release 3. Summary of the contents and survey properties

  Gaia Collaboration, 1-Jun-2021, In: Astronomy and astrophysics. 650, p. C3

  Research output: Contribution to journal › Erratum

  Open Access

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  50 Citations (Scopus)

  34 Downloads (Pure)

• Determination of the escape velocity of the Milky Way using a halo sample selected based on proper motion

  Koppelman, H. H. & Helmi, A., 1-May-2021, In: Astronomy and astrophysics. 649, 14 p., A136.

  Research output: Contribution to journal › Article › Academic › peer-review

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  7 Citations (Scopus)

  71 Downloads (Pure)

• Frequencies, chaos, and resonances: A study of orbital parameters of nearby thick-disc and halo stars

  Koppelman, H. H., Hagen, J. H. J. & Helmi, A., 2021, In: Astronomy & astrophysics. 647, March 2021, 13 p., A37.

  Research output: Contribution to journal › Article › Academic › peer-review

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  4 Citations (Scopus)

  28 Downloads (Pure)

• Gaia Early Data Release 3. Acceleration of the Solar System from Gaia astrometry

  Gaia Collaboration, Klioner, S. A., Mignard, F., Lindegren, L., Bastian, U., McMillan, P. J., Hernández, J., Hobbs, D., Ramos-Lerate, M., Biermann, M., Bombrun, A., de Torres, A., Gerlach, E., Geyer, R., Hilger, T., Lammers, U., Steidelmüller, H., Stephenson, C. A., Brown, A. G. A., Vallenari, A., & 30 othersPrusti, T., de Bruijne, J. H. J., Babusiaux, C., Creevey, O. L., Evans, D. W., Eyer, L., Hutton, A., Jansen, F., Jordi, C., Luri, X., Panem, C., Pourbaix, D., Randich, S., Sartoretti, P., van Leeuwen, F., Bakker, J., Teyssier, D., Janßen, K., Robin, A. C., Smith, M., van Leeuwen, M., Balbinot, E., De Ridder, J., Giuffrida, G., Helmi, A., Jonker, P. G., Khanna, S., Massari, D., Messina, S. & Siebert, A., 1-May-2021, In: Astronomy and astrophysics. 649, 19 p., A9.

  Research output: Contribution to journal › Article › Academic › peer-review

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  32 Citations (Scopus)

  39 Downloads (Pure)

• Gaia Early Data Release 3. Catalogue validation

  Fabricius, C., Luri, X., Arenou, F., Babusiaux, C., Helmi, A., Muraveva, T., Reylé, C., Spoto, F., Vallenari, A., Antoja, T., Balbinot, E., Barache, C., Bauchet, N., Bragaglia, A., Busonero, D., Cantat-Gaudin, T., Carrasco, J. M., Diakité, S., Fabrizio, M., Figueras, F., & 16 othersGarcia-Gutierrez, A., Garofalo, A., Jordi, C., Kervella, P., Khanna, S., Leclerc, N., Licata, E., Lambert, S., Marrese, P. M., Masip, A., Ramos, P., Robichon, N., Robin, A. C., Romero-Gómez, M., Rubele, S. & Weiler, M., 1-May-2021, In: Astronomy and astrophysics. 649, 25 p., A5.

  Research output: Contribution to journal › Article › Academic › peer-review

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  132 Citations (Scopus)

  60 Downloads (Pure)

• Gaia Early Data Release 3. Structure and properties of the Magellanic Clouds

  Gaia Collaboration, Luri, X., Chemin, L., Clementini, G., Delgado, H. E., McMillan, P. J., Romero-Gómez, M., Balbinot, E., Castro-Ginard, A., Mor, R., Ripepi, V., Sarro, L. M., Cioni, M. -R. L., Fabricius, C., Garofalo, A., Helmi, A., Muraveva, T., Brown, A. G. A., Vallenari, A., Prusti, T., & 30 othersde Bruijne, J. H. J., Babusiaux, C., Biermann, M., Creevey, O. L., Evans, D. W., Eyer, L., Hutton, A., Jansen, F., Jordi, C., Klioner, S. A., Lammers, U., Lindegren, L., Mignard, F., Panem, C., Pourbaix, D., Randich, S., van Leeuwen, F., Bakker, J., Teyssier, D., Janßen, K., Robin, A. C., Smith, M., van Leeuwen, M., De Ridder, J., Giuffrida, G., Jonker, P. G., Khanna, S., Massari, D., Messina, S. & Siebert, A., 1-May-2021, In: Astronomy and astrophysics. 649, 35 p., A7.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  17 Citations (Scopus)

  19 Downloads (Pure)

• Gaia Early Data Release 3. Summary of the contents and survey properties

  Gaia Collaboration, Brown, A. G. A., Vallenari, A., Prusti, T., de Bruijne, J. H. J., Babusiaux, C., Biermann, M., Creevey, O. L., Evans, D. W., Eyer, L., Hutton, A., Jansen, F., Jordi, C., Klioner, S. A., Lammers, U., Lindegren, L., Luri, X., Mignard, F., Panem, C., Pourbaix, D., & 30 othersRandich, S., Sartoretti, P., Soubiran, C., Walton, N. A., Arenou, F., Bailer-Jones, C. A. L., Bastian, U., Cropper, M., Drimmel, R., Katz, D., Lattanzi, M. G., van Leeuwen, F., Bakker, J., Cacciari, C., Castañeda, J., De Angeli, F., Teyssier, D., Janßen, K., Robin, A. C., Smith, M., van Leeuwen, M., Balbinot, E., De Ridder, J., Giuffrida, G., Helmi, A., Jonker, P. G., Khanna, S., Massari, D., Messina, S. & Siebert, A., 1-May-2021, In: Astronomy and astrophysics. 649, 20 p., A1.

  Research output: Contribution to journal › Article › Academic › peer-review

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  730 Citations (Scopus)

  171 Downloads (Pure)

• Gaia Early Data Release 3. The Gaia Catalogue of Nearby Stars

  Gaia Collaboration, 1-May-2021, In: Astronomy and astrophysics. 649, p. A6 44 p.

  Research output: Contribution to journal › Article › Academic › peer-review

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  72 Citations (Scopus)

  59 Downloads (Pure)

• Gaia Early Data Release 3. The Galactic anticentre

  Gaia Collaboration, Antoja, T., McMillan, P. J., Kordopatis, G., Ramos, P., Helmi, A., Balbinot, E., Cantat-Gaudin, T., Chemin, L., Figueras, F., Jordi, C., Khanna, S., Romero-Gómez, M., Seabroke, G. M., Brown, A. G. A., Vallenari, A., Prusti, T., de Bruijne, J. H. J., Babusiaux, C., Biermann, M., & 30 othersCreevey, O. L., Evans, D. W., Eyer, L., Hutton, A., Jansen, F., Klioner, S. A., Lammers, U., Lindegren, L., Luri, X., Mignard, F., Panem, C., Pourbaix, D., Randich, S., Sartoretti, P., Soubiran, C., Walton, N. A., Arenou, F., van Leeuwen, F., Bakker, J., Teyssier, D., Janßen, K., Robin, A. C., Smith, M., van Leeuwen, M., De Ridder, J., Giuffrida, G., Jonker, P. G., Massari, D., Messina, S. & Siebert, A., 1-May-2021, In: Astronomy and astrophysics. 649, 38 p., A8.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  27 Citations (Scopus)

  39 Downloads (Pure)

• Gaia EDR3 documentation Chapter 8: Gaia EDR3 documentation Chapter 8: Validation

  Luri, X., Fabricius, C., Antoja, T., Arenou, F., Babusiaux, C., Balbinot, E., Barache, C., Bauchet, N., Carrasco, J. M., Diakité, S., Figueras, F., Garcia-Gutierrez, A., Helmi, A., Jordi, C., Khanna, S., Leclerc, N., Masip, A., Muraveva, T., Ramos, P., Reylé, C., & 6 othersRobin, A., Romero-Gómez, M., Rybizki, J., Turon, C., Vallenari, A. & Weiler, M., 1-Mar-2021, EUROPEAN SPACE AGENCY.

  Research output: Book/Report › Report › Professional

• Galactic potential constraints from clustering in action space of combined stellar stream data

  Reino, S., Rossi, E. M., Sanderson, R. E., Sellentin, E., Helmi, A., Koppelman, H. H. & Sharma, S., 1-Apr-2021, In: Monthly Notices of the Royal Astronomical Society. 502, 3, p. 4170-4193

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  10 Citations (Scopus)

  27 Downloads (Pure)

• Heavy-elements heritage of the falling sky

  Recio-Blanco, A., Fernández-Alvar, E., de Laverny, P., Antoja, T., Helmi, A. & Crida, A., 1-Apr-2021, In: Astronomy and astrophysics. 648, A108.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  2 Citations (Scopus)

  16 Downloads (Pure)

• Linking nearby stellar streams to more distant halo overdensities

  Balbinot, E. & Helmi, A., 1-Oct-2021, In: Astronomy and astrophysics. 654, 6 p., A15.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  5 Citations (Scopus)

  24 Downloads (Pure)

• R-process enhancements of Gaia-Enceladus in GALAH DR3

  Matsuno, T., Hirai, Y., Tarumi, Y., Hotokezaka, K., Tanaka, M. & Helmi, A., 1-Jun-2021, In: Astronomy and astrophysics. 650, 9 p., A110.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  26 Citations (Scopus)

  17 Downloads (Pure)

• The reduced proper motion selected halo: Methods and description of the catalogue

  Koppelman, H. H. & Helmi, A., 15-Jan-2021, In: Astronomy & astrophysics. 645, January 2021, 17 p., A69.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  3 Citations (Scopus)

  56 Downloads (Pure)

• Time evolution of gaps in stellar streams in axisymmetric Stäckel potentials

  Koppelman, H. H. & Helmi, A., 1-May-2021, In: Astronomy and astrophysics. 649, 15 p., A55.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  1 Citation (Scopus)

  26 Downloads (Pure)

• Zero-metallicity Hypernova Uncovered by an Ultra-metal-poor Star in the Sculptor Dwarf Spheroidal Galaxy

  Skúladóttir, Á., Salvadori, S., Amarsi, A. M., Tolstoy, E., Irwin, M. J., Hill, V., Jablonka, P., Battaglia, G., Starkenburg, E., Massari, D., Helmi, A. & Posti, L., 13-Jul-2021, In: The Astrophysical Journal. 915, 2, 8 p., L30.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  9 Citations (Scopus)

  31 Downloads (Pure)
• 2020

  An all-sky proper-motion map of the Sagittarius stream using Gaia DR2

  Antoja, T., Ramos, P., Mateu, C., Helmi, A., Anders, F., Jordi, C. & Carballo-Bello, J. A., Mar-2020, In: Astronomy & astrophysics. 635, 9 p., 3.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  37 Citations (Scopus)

  36 Downloads (Pure)

• Bright Stars from the Ancient Merger Gaia-Enceladus Visible with Binoculars

  Matsuno, T., Koppelman, H. H. & Helmi, A., 1-Dec-2020, In: Research Notes of the AAS. 4, 12, 3 p., 246.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  34 Downloads (Pure)

• Corrigendum: Gaia Data Release 2 Kinematics of globular clusters and dwarf galaxies around the Milky Way

  Gaia Collaboration, 1-May-2020, In: Astronomy & astrophysics. 637, 4 p., C3.

  Research output: Contribution to journal › Erratum

  Open Access

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  1 Citation (Scopus)

  71 Downloads (Pure)

• Cosmological insights into the assembly of the radial and compact stellar halo of the Milky Way

  Elias, L. M., Sales, L. V., Helmi, A. & Hernquist, L., 1-Jun-2020, In: Monthly Notices of the Royal Astronomical Society. 495, 1, p. 29-39 11 p.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  15 Citations (Scopus)

  27 Downloads (Pure)

• Full 5D characterisation of the Sagittarius stream with Gaia DR2 RR Lyrae

  Ramos, P., Mateu, C., Antoja, T., Helmi, A., Castro-Ginard, A., Balbinot, E. & Carrasco, J. M., 1-Jun-2020, In: Astronomy & astrophysics. 638, 18 p., A104.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  31 Citations (Scopus)

  39 Downloads (Pure)

• Full 5D characterisation of the Sagittarius stream with Gaia DR2 RR Lyrae (Corrigendum)

  Ramos, P., Mateu, C., Antoja, T., Helmi, A., Castro-Ginard, A., Balbinot, E. & Carrasco, J. M., 26-Aug-2020, In: Astronomy & astrophysics. 640, C5.

  Research output: Contribution to journal › Erratum

  Open Access

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  24 Downloads (Pure)

• Gaia Data Release 2. The kinematics of globular clusters and dwarf galaxies around the Milky Way (Corrigendum)

  Gaia Collaboration, Helmi, A., Massari, D., Breddels, M. A. & Veljanoski, J., 20-Oct-2020, In: Astronomy & astrophysics. 642, 5 p., C1.

  Research output: Contribution to journal › Erratum

  Open Access

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  2 Citations (Scopus)

  21 Downloads (Pure)

• Stellar 3D kinematics in the Draco dwarf spheroidal galaxy

  Massari, D., Helmi, A., Mucciarelli, A., Sales, L., Spina, L. & Tolstoy, E., 7-Jan-2020, In: Astronomy & astrophysics. 633, 11 p., 36.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  24 Citations (Scopus)

  30 Downloads (Pure)

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

  Helmi, A., 1-Aug-2020, In: Annual Review of Astronomy and Astrophysics. 58, p. 205-256 54 p.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  117 Citations (Scopus)

  137 Downloads (Pure)

• The chemical evolution of the dwarf spheroidal galaxy Sextans

  Theler, R., Jablonka, P., Lucchesi, R., Lardo, C., North, P., Irwin, M., Battaglia, G., Hill, V., Tolstoy, E., Venn, K., Helmi, A., Kaufer, A., Primas, F. & Shetrone, M., 15-Oct-2020, In: Astronomy & astrophysics. 642, 13 p., A176.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  12 Citations (Scopus)

  69 Downloads (Pure)

• The Halo-Disc dynamical coupling: Gaia blind detection of the Monoceros and ACS structures

  Ramos, P., Antoja, T., Mateu, C., Helmi, A., Castro-Ginard, A., Anders, F., Jordi, C., Carballo-Bello, J. A., Balbinot, E. & Carrasco, J. M., 1-Jul-2020.

  Research output: Contribution to conference › Paper › Academic

  Open Access

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  10 Downloads (Pure)

• The messy merger of a large satellite and a Milky Way-like galaxy

  Koppelman, H. H., Bos, R. O. Y. & Helmi, A., 22-Oct-2020, In: Astronomy & astrophysics. 642, 6 p., L18.

  Research output: Contribution to journal › Comment/Letter to the editor › Academic › peer-review

  Open Access

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  25 Citations (Scopus)

  59 Downloads (Pure)

• The Sagittarius stream with Gaia data

  Antoja, T., Ramos, P., Mateu, C., Helmi, A., Castro-Ginard, A., Anders, F., Jordi, C., Carballo-Bello, J. A., Balbinot, E. & Carrasco, J. M., 1-Jul-2020.

  Research output: Contribution to conference › Paper › Academic

  Open Access

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  16 Downloads (Pure)

• The Sixth Data Release of the Radial Velocity Experiment (RAVE). I. Survey Description, Spectra, and Radial Velocities

  RAVE Collaboration, Aug-2020, In: The Astronomical Journal. 160, 2, 19 p., 82.

  Research output: Contribution to journal › Article › Academic › peer-review

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  53 Citations (Scopus)

  51 Downloads (Pure)

• The Sixth Data Release of the Radial Velocity Experiment (Rave). II. Stellar Atmospheric Parameters, Chemical Abundances, and Distances

  RAVE Collaboration, Aug-2020, In: The Astronomical Journal. 160, 2, 43 p., 83.

  Research output: Contribution to journal › Article › Academic › peer-review

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  54 Citations (Scopus)

  36 Downloads (Pure)
• 2019

  4MOST: Project overview and information for the First Call for Proposals

  4MOST, de Jong, R. S., Agertz, O., Agudo Berbel, A., Aird, J., Alexander, D. A., Amarsi, A., Anders, F., Andrae, R., Ansarinejad, B., Ansorge, W., Antilogus, P., Anwand-Heerwart, H., Arentsen, A., Arnadottir, A., Asplund, M., Auger, M., Azais, N., Baade, D., Baker, G., & 29 othersBaker, S., Baldry, I. K., Banerji, M., Barden, S., Barklem, P., Barthélémy-Mazot, E., Battistini, C., Bauer, S., Bell, C. P. M., Bellido-Tirado, O., Bellstedt, S., Belokurov, V., Bensby, T., Bergemann, M., Bestenlehner, J. M., Bielby, R., Bilicki, M., Helmi, A., Lemasle, B., Monari, G., Roelfsema, R., Skúladóttir, Á., Starkenburg, E., Tolstoy, E., Trager, S., van de Weygaert, R., Veljanoski, J., Wang, L. & Kuijken, K., Mar-2019, In: ESO Messenger. 175, 11 p.

  Research output: Contribution to journal › Article › Professional

  Open Access

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  7 Downloads (Pure)

• 4MOST Consortium Survey 1: The Milky Way Halo Low-Resolution Survey

  Helmi, A., Irwin, M., Deason, A., Balbinot, E., Belokurov, V., Bland-Hawthorn, J., Christlieb, N., Cioni, M. -R. L., Feltzing, S., Grebel, E. K., Kordopatis, G., Starkenburg, E., Walton, N. & Worley, C. C., 1-Mar-2019, In: The Messenger. 175, p. 23-25 3 p.

  Research output: Contribution to journal › Article › Academic › peer-review

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• 4MOST Consortium Survey 2: The Milky Way Halo High-Resolution Survey

  Christlieb, N., Battistini, C., Bonifacio, P., Caffau, E., Ludwig, H. -G., Asplund, M., Barklem, P., Bergemann, M., Church, R., Feltzing, S., Ford, D., Grebel, E. K., Hansen, C. J., Helmi, A., Kordopatis, G., Kovalev, M., Korn, A., Lind, K., Quirrenbach, A., Rybizki, J., & 2 othersSkúladóttir, Á. & Starkenburg, E., 1-Mar-2019, In: The Messenger. 175, p. 26-29 4 p.

  Research output: Contribution to journal › Article › Academic › peer-review

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• A Gaia-Enceladus Analog in the EAGLE Simulation: Insights into the Early Evolution of the Milky Way

  Bignone, L. A., Helmi, A. & Tissera, P. B., 17-Sept-2019, In: Astrophysical Journal Letters. 883, 1, 6 p., 5.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  33 Citations (Scopus)

  198 Downloads (Pure)

• Axisymmetric Schwarzschild models of an isothermal axisymmetric mock dwarf spheroidal galaxy

  Hagen, J. H. J., Helmi, A. & Breddels, M. A., 10-Dec-2019, In: Astronomy & astrophysics. 632, 14 p., 99.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  4 Citations (Scopus)

  41 Downloads (Pure)

• Characterization and history of the Helmi streams with Gaia DR2

  Koppelman, H. H., Helmi, A., Massari, D., Roelenga, S. & Bastian, U., 1-May-2019, In: Astronomy and astrophysics. 625, A5.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  65 Citations (Scopus)

  126 Downloads (Pure)

• Gaia Data Release 2. Variable stars in the colour-absolute magnitude diagram

  Gaia Collaboration, Mar-2019, In: Astronomy and astrophysics. 623, 20 p., A110.

  Research output: Contribution to journal › Article › Academic › peer-review

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  56 Citations (Scopus)

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

  Posti, L. & Helmi, A., 8-Jan-2019, In: Astronomy & astrophysics. 621, 10 p., 56.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

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  112 Citations (Scopus)

  185 Downloads (Pure)