Stellar Activity and the Rotation of Hyades Stars

Abstract

New measurements of rotation periods for Hyades stars, which were obtained from re-analysis of Mount Wilson Observatory CaII H-K emission flux measurements, are reported. The existence of systematic, color-dependent discrepancies between the measured rotation periods for Hyades stars and those predicted by the Rossby relation as originally calibrated by Noyes et al. (1984 has led to a re-examination of the form of the relationship between chromospheric emission, rotation, and color. Keywords: Stellar activity; Stellar rotation; Reprints.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1987
Accession Number
ADA205762

Entities

People

  • Richard R. Radick
  • Sallie L. Baliunas

Organizations

  • Air Force Research Laboratory

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Air Force
  • Buildings And Structures
  • Classification
  • Emission
  • Flux Density
  • Measurement
  • Monitoring
  • Observatories
  • Polynomials
  • Research Facilities
  • Rotation
  • Security

Fields of Study

  • Physics

Readers

  • Astronomy/Astrophysics
  • Theoretical Analysis.