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Chemical composition of M-type dwarf stars

Christian Duque-Arribas
Universidad Complutense de Madrid, Spain

The precise determination of stellar atmospheric parameters of M-type dwarf stars, with a particular emphasis on their metallicity, is of prime interest for a range of topics in modern stellar astrophysics, such as the chemical evolution of the Galaxy or the formation, composition and structure of exoplanets. However, the spectra of these stars are complex and notoriously difficult to model due to the presence of prominent molecular features, in comparison to those of solar-type stars.
Our aim is to study the metallicity and abundances of the M dwarfs using wide physical binary systems and different kinds of data, ranging from the information provided from extensive photometric surveys, such as Gaia, to the insights offered by high-resolution spectroscopy from instruments like CARMENES.

2023 December 06, 13:15

Centro de Astrofísica da Universidade do Porto (Auditorium)
Rua das Estrelas, 4150-762 Porto

Faculdade de Ciências da Universidade de Lisboa Universidade do Porto Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia