Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-04-12
Astronomy and Astrophysics
Astrophysics
15 pages, 7 figures, 3 tables; To appear in the July 2002 issue of The Astronomical Journal
Scientific paper
10.1086/341171
The Hyades constitute a homogeneous sample of stars ideal for investigating the dependence of planet formation on the mass of the central star. Due to their youth, Hyades members are much more chromospherically active than stars traditionally surveyed for planets using high precision radial velocity (RV) techniques. Therefore, we have conducted a detailed investigation of whether magnetic activity of our Hyades target stars will interfere with our ability to make precise RV searches for substellar companions. We measure chromospheric activity (which we take as a proxy for magnetic activity) by computing the equivalent of the R'HK activity index from the Ca II K line.
Cochran William D.
Hatzes Artie P.
Paulson Diane B.
Saar Steven H.
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