115 citations · 166 across the 10 of their papers we have counts for
3 papers · 1 filter
Stellar surface information from the Ca II H&K lines -- II. Defining better activity proxies
M. Cretignier, N. C. Hara, A. G. M. Pietrow +6
In our former paper I, we showed on the Sun that different active regions possess unique intensity profiles on the Ca II H & K lines. We now extend the analysis by showing how thos…
A low-mass sub-Neptune planet transiting the bright active star HD 73344
S. Sulis, I. J. M. Crossfield, A. Santerne +33
Context. Planets with radii of between 2-4 RE closely orbiting solar-type stars are of significant importance for studying the transition from rocky to giant planets. Aims. Our goa…
An improved correction of radial-velocity systematic for the SOPHIE spectrograph
S. Grouffal, A. Santerne, N. C. Hara +4
High precision spectrographs might exhibit temporal variations of their reference velocity or nightly zero point (NZP). One way to monitor the NZP is to measure bright stars, which…