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astro-ph.SR2020★ 133 cited
Stellar chromospheric activity of 1,674 FGK stars from the AMBRE-HARPS sample I. A catalogue of homogeneous chromospheric activity
J. Gomes da Silva, N. C. Santos, V. Adibekyan +9
We present a catalogue of homogeneous determined chromospheric emission (CE), stellar atmospheric parameters and ages for 1,674 FGK main sequence (MS), subgiant, and giant stars. T…
astro-ph.SR2010
Long-term stellar activity variations of stars from the HARPS M-dwarf sample: Comparison between activity indices
J. Gomes da Silva, N. C. Santos, X. Bonfils
We used four known chromospheric activity indicators to measure long-term activity variations in a sample of 23 M-dwarf stars from the HARPS planet search program. We compared the…