The recurrent impact of the Sagittarius dwarf on the Milky Way star formation history

Bibcode
2020sea..confE.185R
Ruiz-Lara, T.; Gallart, C.; Bernard, E. J.; Cassisi, S.
Referencia bibliográfica

Contributions to the XIV.0 Scientific Meeting (virtual) of the Spanish Astronomical Society

Fecha de publicación:
7
2020
Número de autores
4
Número de autores del IAC
2
Número de citas
2
Número de citas referidas
1
Descripción
The measurement of distances to individual stars with Gaia is enabling the construction of deep colour-magnitude diagrams (CMD) for large volumes within our Galaxy in absolute magnitudes. Comparison with models (CMD-fitting) has allowed us to obtain the most detailed star formation history (SFH) of the bubble of 2 kpc around the Sun. Surprisingly, this SFH presents conspicuous star forming events around 5.7, 2 and 1 Gyr ago, coinciding with inferred pericentric passages of the Sagittarius dwarf galaxy (Sgr). We conclude that Sgr has been an important actor in the build-up of the stellar mass of the Milky Way disc.
Tipo
Sin árbitro

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