65 citations · 106 across the 2 of their papers we have counts for
3 papers
An X-ray activity cycle on the young solar-like star
M. Coffaro, B. Stelzer, S. Orlando +7
In 2015 we started the XMM-Newton monitoring of the young solar-like star Epsilon Eridani (440 Myr), one of the youngest solar-like stars with a known chromospheric CaII cycle. By…
The Sun-like activity of the solar twin 18 Scorpii
Jeffrey C. Hall, Gregory W. Henry, G. Wesley Lockwood
We present the results of 10 yr of complementary spectroscopic and photometric observations of the solar twin 18 Scorpii. We show that over the course of its ~7 year chromospheric…
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…