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Can we really detect planets around evolved massive stars?

E. Delgado Mena

The discovery of planets around massive stars is important for understanding how planet formation and evolution is conditioned by different stellar environments. However, current planetary search surveys have failed to detect planets around massive evolved stars. This lack of planets might be a consequence of the specifities of planet formation around such objects. Alternatively, the detection of planets around evolved massive stars might be hindered by the increasing stellar jitter as the stars evolve. In this project we target planets around evolved stars in open clusters, most of them with masses above 2 MSun. We present the cases of three objects where long term (i.e. years) and high amplitude RV signals of probably stellar origin are mimicking the presence of planets.

Highlights on Spanish Astrophysics X. Proceedings of the XIII Scientific Meeting of the Spanish Astronomical Society
A. Asensio Ramos B. Montesinos

Spanish Astronomical Society, Page 455
2019 March

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