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Impact of stellar activity on chromatic Rossiter-McLaughlin observations

Sören Boldt
Institut für Astrophysik, Georg-August Universität Göttingen, Germany

So far mostly multi-band photometric transit observations have been used to retrieve broadband transmission spectra of transiting exoplanet in order to study their atmosphere. An alternative method had been proposed and has been used only once to recover transmission spectra using chromatic Rossiter–McLaughlin observations. It has been shown that stellar activity that could mimic narrow and broad-band features in the transmission spectra retrieved from multi-band photometric observations.
In this talk, I will present how chromatic Rossiter-McLaughlin observations are affected by stellar activity.

2019 November 05, 15:00

Centro de Astrofísica da Universidade do Porto (Classroom)
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