Sarah Ballard is an American [[astrophysicist]] specializing in the study of [[exoplanets]], particularly those orbiting [[M-dwarf]] stars. She is recognized for her contributions to understanding the formation, evolution, and atmospheric characteristics of small planets beyond our [[Solar System]]. Her research employs data from space telescopes to characterize exoplanet properties and assess their potential for habitability.
Early Life and Education
Ballard earned her Bachelor of Arts degree in [[Astrophysics]] from the [[University of California, Berkeley]]. She then pursued her graduate studies at the [[Harvard-Smithsonian Center for Astrophysics]], where she received her Ph.D. in [[astronomy]]. Her doctoral research focused on the properties of exoplanets detected through the [[transit method]].Career and Research
Following her doctoral work, Ballard held a [[NASA]] NPP Fellowship at the [[Massachusetts Institute of Technology (MIT)]], where she continued her research on exoplanets. She later joined the faculty at the [[University of Florida]], where she is currently an assistant professor in the [[Department of Astronomy]].Ballard's research primarily focuses on:
- Exoplanet Characterization: Utilizing data from missions like [[NASA's Kepler Space Telescope]] and [[TESS (Transiting Exoplanet Survey Satellite)]] to determine the sizes, masses, and densities of exoplanets.
- Planets around M-Dwarfs: A significant portion of her work investigates planets orbiting cool, low-mass stars known as M-dwarfs. These stars are the most common type in the galaxy, and many of their orbiting planets are potentially habitable. Ballard has explored how the environment around M-dwarfs (e.g., stellar flares, tidal forces) affects these planets.
- Atmospheric Studies: Investigating the potential for atmospheres on small exoplanets, which is crucial for assessing their habitability.
- Stellar Activity: Studying the impact of stellar activity, such as flares and starspots, on the observations and long-term evolution of exoplanets.
Her work has significantly advanced the understanding of how planetary systems form and evolve around stars different from our Sun, particularly focusing on the most common type of star in the Milky Way.