activity
20212026
most citedMagnetic field and activity phenomena of the K2 dwarf V471 Tau

14 citations · 47 across the 13 of their papers we have counts for

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astro-ph.SR2026

The Fe I 4377 Å Line as a Solar Faculae Indicator: Insights from Spectral Ratio Analysis

Katlyn L. Hobbs, Christopher A. Watson, Jean C. Costes +21

Faculae are a dominant source of stellar activity noise in radial velocity measurements, yet their low contrast and broad surface distribution make them difficult to track in disc-…

astro-ph.SR2025

The magnetic and spin-down properties of slowly rotating fully convective M dwarfs

Victor See, Louis Amard, Stefano Bellotti +19

The evolution of the magnetism, winds and rotation of low-mass stars are all linked. One of the most common ways to probe the magnetic properties of low-mass stars is with the Zeem…

astro-ph.SR2025

Measuring the Suns radial velocity variability due to supergranulation over a magnetic cycle

Niamh K. O'Sullivan, Suzanne Aigrain, Michael Cretignier +9

In recent years supergranulation has emerged as one of the biggest challenges for the detection of Earth-twins in radial velocity planet searches. We used eight years of Sun-as-a-s…

astro-ph.SR2022★ 8 cited

Magnetic field evolution of the K2 dwarf V471 Tau

Bonnie Zaire, Jean-Francois Donati, Baptiste Klein

Observations of the eclipsing binary system V471 Tau show that the time of the primary eclipses varies in an apparent periodic way. With growing evidence that the magnetically acti…

astro-ph.SR2021★ 14 cited

Magnetic field and activity phenomena of the K2 dwarf V471 Tau

Bonnie Zaire, Jean-Francois Donati, Baptiste Klein

We analyze spectropolarimetric data of the pre-cataclysmic variable binary system V471 Tau obtained with ESPaDOnS at the Canada-France-Hawaii Telescope in two observational campaig…