Towards Other Earths III: The Planet-Star connection
17-21 July 2023, Porto, Portugal

Planetary systems result from the synergy between the stars and the planets they host. It can be convenient, at first, to consider them in isolation, but the links between them affect all aspects of exoplanetary sciences. Stars can be a hurdle to exoplanetary sciences. The precision and accuracy of our knowledge of stellar parameters is often a major driver for the precision and accuracy of the respective planetary parameters. Stellar activity and its impact on planet detection and characterisation is one of the significant challenges for the next decade. But stars can also be facilitators to exoplanetary sciences. The correlation between stellar metallicity and the frequency of giant planets is well established and the link between stellar and planetary composition is an active topic. In the next few years we also have a lot to learn from the dynamical interactions between stars and planets.



With this new edition of the Towards Other Earth conference series, we aim to gather again scientists from all around the world in Porto (Portugal), to discuss what has been learned from studying stars and planets together. In particular we wish to address:

• The impact of stellar activity on planet detection and characterisation but also on the evolution of planets and their atmospheres;
• The link between the stellar properties and the frequency, bulk and atmospheric composition of planets;
• The implications and different effects of the dynamical interactions between the stars and the planets that they host.

SOC
Andrew Collier Cameron (University of St Andrews, UK)
Caroline Dorn (University of Zurich, Switzerland)
David Ehrenreich (University of Geneva, Switzerland)
Elisa Delgado Mena (Instituto de Astrofísica e Ciências do Espaço, Portugal), Co-Chair
Emeline Bolmont (University of Geneva, Switzerland)
Eva Villaver (Centro de Astrobiología, Spain)
Jacques Laskar (Observatoire de Paris, France)
Lisa Kaltenegger (Carl Sagan Institute and Cornell University, USA)
Nestor Espinoza (Space Telescope Science Institute, USA)
Olivier Demangeon (Instituto de Astrofísica e Ciências do Espaço, Portugal), Co-Chair
Rebekah Dawson (Pennsylvania State University, USA)
Sérgio Sousa (Instituto de Astrofísica e Ciências do Espaço, Portugal), Co-Chair
Susana Barros (Instituto de Astrofísica e Ciências do Espaço, Portugal), Co-Chair



LOC
Ana Rita Costa Silva
Bárbara Soares
Elisa Delgado Mena
Elsa Marta Silva
Manuel Monteiro
Nuno Rosário
Olivier Demangeon
Sergio Sousa
Susana Barros
Tomás Azevedo Silva