Corpus ID: 117891447

The activity and rotation limit in the Hyades

  title={The activity and rotation limit in the Hyades},
  author={U. Seemann and Ansgar Reiners and A. Seifahrt and Martin Kurster},
  journal={arXiv: Solar and Stellar Astrophysics},
We conduct a study of K to M type stars to investigate the activity and the rotation limit in the Hyades. We use a sample of 40 stars in this intermediate-age cluster (~625 Myr) to probe stellar rotation in the threshold region where stellar activity becomes prevalent. Here we present projected equatorial velocities (vsin i) and chromospheric activity measurements (H{\alpha}) that indicate the existence of fast rotators in the Hyades at spectral types where also the fraction of stars with H… Expand

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