The Activity and Variability of the Sun and Sun-like Stars. I. Synoptic Ca II H and K Observations

By Jeffrey C. Hall, G. Lockwood, B. Skiff. 2007

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CHROMOSPHERIC ACTIVITY AND JITTER MEASUREMENTS FOR 2630 STARS ON THE CALIFORNIA PLANET SEARCH (2010, background): “…derived SHK values for more than 800 nearby stars from the southern hemisphere; Strassmeier et al. (2000) monitored SHK as a tracer for rotation period to find candidates for Doppler imaging; Hall et al. (2007) have measured H and K fluxes since 1994 to search for stars with sunlike spot cycles.”
Improved Age Estimation for Solar-Type Dwarfs Using Activity-Rotation Diagnostics (2008, background): “…were taken from many sources, including the large multi-epoch surveys of Duncan et al. (1991), Baliunas et al. (1996), Wright et al. (2004), and Hall et al. (2007), the large single-epoch surveys of Henry et al. (1996), Gray et al. (2003), and Gray et al. (2006), the smaller, focused surveys…”
Toroidal versus poloidal magnetic fields in Sun-like stars: a rotation threshold (2008, background): “The monitoring of chromospheric emission reported by Baliunas et al. (1995), Hall, Lockwood & Skiff (2007a) and Hall et al. (2007b) actually shows that two of our targets (HD 76151 and HD 146233) follow activity cycles.”