A New Catalog of Stellar Rotation Periods for over a Million Stars
5 hours ago
- #TESS Survey
- #Stellar Rotation
- #Exoplanet Science
- TESS has created a rich database of photometry for millions of stars since its 2018 launch, enabling studies of stellar properties.
- Stellar rotation is key for tracing age, magnetic activity, and internal structure, and impacts exoplanet detection and evolution.
- Andrew W. Boyle and team built the TESS All-Sky Rotation Survey (TARS), a catalog of rotation periods for 1,046,317 stars within ~1,600 light-years.
- TARS expands known rotation periods by factors of 2.3 (within ~325 light-years) and 4.0 (within ~1,600 light-years), with ~93% attributed to true stellar rotation.
- The catalog clarifies young stellar associations in the local neighborhood and supports studies in stellar evolution, exoplanet science, and Milky Way structure.