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20062020
most citedThe Mount Wilson Observatory S-index of the Sun

139 citations · 394 across the 8 of their papers we have counts for

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astro-ph2006★ 65 cited

A Survey of Chromospheric Activity in the Solar-Type Stars in the Open Cluster M67

Mark S. Giampapa, Jeffrey C. Hall, Richard R. Radick +1

We present the results of a spectroscopic survey of the Ca II H & K core strengths in a sample of 60 solar-type stars that are members of the solar-age and solar-metallicity open c…