RESEARCH
<< back
Stellar Rotation: Calibrations, Applications, and Challenges of Gyrochronology

Diego Godoy-Rivera
Instituto de Astrofísica de Canarias

Abstract
Stellar rotation plays an important role in the life of stars, and offers a potential diagnostic to infer their ages and that of their planets. This technique is known as gyrochronology, and holds far-reaching applications to Galactic, stellar, and exoplanetary astrophysics if properly calibrated. While potentially fruitful over a wide range of ages and masses, novel data sets have revealed an increasingly complex picture, raising concerns on the applicability of gyrochronology. In this talk, I will discuss the latest results obtained from the space-based Kepler, TESS, and Gaia missions, as well as ground-based surveys, and the insights they provide into stellar physics. I will highlight the importance of sets of co-eval stars, such as star clusters and binary systems, in constraining rotational evolution and in developing novel gyrochronology tests in under-explored domains. Finally, I will discuss prospects for expanding existing benchmarks, and the complementary role of magnetic activity.

2024 November 15, 13:30

IA/U.Porto
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