The 19th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun
Published July 28, 2016 | Version v1
Presentation Open

Testing the Rotation-Activity Relation with the Hyades and Praesepe

Authors/Creators

  • 1. Columbia University
  • 2. Western Washington University
  • 3. NASA Ames Research Center
  • 4. NASA Ames Research Center/NASA Postdoctoral Program Fellow
  • 5. Harvard-Smithsonian Center for Astrophysics
  • 6. MPIA Heidelberg/IMPRS-HD

Contributors

  • 1. Uppsala University, University of North Georgia

Description

As the nearest open cluster to the Sun, the Hyades is an important benchmark for calibrating stellar properties such as rotation and magnetic activity. Its proximity, however, means that cluster members are scattered across a wide area of the sky; previous studies of rotation relied on wide-area surveys designed to discover transiting exoplanets. I will present rotation periods measured using K2 data of the Hyades, including the first rotation periods of less than 1 day for cluster members and for fully convective Hyads. Discrepancies between Hyades data and gyrochronology models imply that we still do not fully understand how magnetic fields affect stellar spin-down. I will discuss how we can use the Hyades and the co-eval Praesepe cluster to test theories of stellar magnetic fields.

Notes

Presented in the splinter session "Star Clusters From Space, From the Ground, and Over Time"

Files

2016_hypra_CS19_zotero.pdf

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Additional details

Related works

Is supplement to
10.3847/0004-637X/822/1/47 (DOI)