Events at Physics
of magnetic activity in altering the basic properties of low-mass stars and brown dwarfs, affecting our understanding of the stellar initial mass function and the frequency of brown dwarfs in stellar populations. The X10000 Project studies the structures of young stellar coronae in order to understand the role of extreme coronal mass ejections in the angular momentum evolution of young stars. As a by-product of this work, we have determined the first robust empirical relationship between X-ray flare energy and coronal mass loss for the Sun. Finally, we use the Kepler database of precision light curves for 150,000 stars to present a new, “photometric variability HR diagram” which enables accurate determination
of stellar surface gravities, improves our knowledge of exoplanet
properties, and enhances our ability to identify the most radial-velocity quiet stars for exoplanet discovery.
We strongly encourage you to attend the colloquium in person. If that is impossible, it is available over zoom at the following link: