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Chromospheric activity in open clustersSpectra of Ca II H and K are being taken for stars of similar mass in the Hyades, the Pleiades, and NGC 752. These spectra will be used to create indices of chromospheric activity on these stars. The dispersion in these indices will then be compared to model dispersions which take into account stellar inclination, position of active regions, and filling factor. Only a few observations have been made to date. These show that a high signal to noise is achievable over reasonable exposure times. Modeling has only just begun.
Document ID
19880051382
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Pilger, E. J. (Hawaii, University Honolulu, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Subject Category
Astrophysics
Meeting Information
Meeting: The internal solar angular velocity: Theory, observations and relationship to solar magnetic fields
Location: Sunspot, NM
Country: United States
Start Date: August 11, 1986
End Date: August 14, 1986
Sponsors: The national SOlar Observatory and NASA.
Accession Number
88A38609
Funding Number(s)
CONTRACT_GRANT: NSG-7536
Distribution Limits
Public
Copyright
Other

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