Oct 18 – 22, 2021
INAF Osservatorio Astrofisico di Arcetri (Italy) and online
Europe/Rome timezone

Another brick in the bulge: On the nature of the globular cluster Palomar 6

Oct 18, 2021, 10:20 AM


Stefano Souza (Universidade de São Paulo - IAG-USP)


To decipher the history of the Galactic bulge is a tricky task because of the complex stellar populations that live there from other components of the Milky Way. In particular, the globular clusters are fundamental pieces to reconstruct that history since they retain the chemodynamical signatures of the early stages of the Galaxy. In this context, we have the globular cluster Palomar 6 (Pal6), which is in the direction of the Galactic bulge, a region strongly affected by extinction. From high-quality data of Pal6, we found that it has a similar chemical pattern observed for the genuine bulge globular clusters. Also, Pal6 seems to have a second population of stars making it a Type I globular cluster. The analysis confirms that Pal6 is confined in the inner region of the Galaxy. Moreover, we concluded that Pal6 was probably formed in situ. Therefore, we can say that Pal6 is a genuine Type I bulge globular cluster that has been there since the beginning of our Galaxy.

Type contributed talk

Primary author

Stefano Souza (Universidade de São Paulo - IAG-USP)


Dr Marica Valentini (Leibniz-Institut für Astrophysik Potsdam (AIP)) Dr Beatriz Barbuy (Universidade de São Paulo, IAG-USP) Dr Angeles Pérez-Villegas (Instituto de Astronomía, Universidad Nacional Autónoma de México) Dr Cristina Chiappini (Leibniz-Institut für Astrophysik Potsdam (AIP)) Dr Sergio Ortolani ( Università di Padova, Dipartimento di Astronomia, Vicolo dell'Osservatorio 2) Dr Domenico Nardiello (Aix Marseille Univ, CNRS, CNES, LAM) Dr Bruno Dias (Instituto de Alta Investigación, Universidad de Tarapacá) Dr Friedrich Anders (Institut de Ci\`encies del Cosmos, Universitat de Barcelona (IEEC-UB)) Dr Eduardo Bica (Universidade Federal do Rio Grande do Sul, Departamento de Astronomia)

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