activity
20112026
most citedSWEET-Cat: A catalogue of parameters for Stars With ExoplanETs I. New atmospheric parameters and masses for 48 stars with planets

313 citations · 4.3k across the 96 of their papers we have counts for

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Showing 2021Show all

7 papers · 1 filter

astro-ph.EP2021★ 7 cited

K2-79b and K2-222b: Mass measurements of two small exoplanets with periods beyond 10 days that overlap with periodic magnetic activity signals

Chantanelle Nava, Mercedes López-Morales, Annelies Mortier +28

We present mass and radius measurements of K2-79b and K2-222b, two transiting exoplanets orbiting active G-type stars. Their respective 10.99d and 15.39d orbital periods fall near…

astro-ph.IM2021★ 2 cited

Extreme Precision Radial Velocity Working Group Final Report

Jonathan Crass, B. Scott Gaudi, Stephanie Leifer +33

Precise mass measurements of exoplanets discovered by the direct imaging or transit technique are required to determine planet bulk properties and potential habitability. Furthermo…

astro-ph.EP2021★ 14 cited

Wolf 503 b: Characterization of a Sub-Neptune Orbiting a Metal-Poor K Dwarf

Alex S. Polanski, Ian J. M. Crossfield, Jennifer A. Burt +35

Using radial velocity measurements from four instruments, we report the mass and density of a sub-Neptune orbiting the quiet K-dwarf Wolf 503 (HIP…

astro-ph.EP2021★ 11 cited

Planet Hunters TESS III: two transiting planets around the bright G dwarf HD 152843

Nora L. Eisner, Belinda A. Nicholson, Oscar Barragán +37

We report on the discovery and validation of a two-planet system around a bright (V = 8.85 mag) early G dwarf (1.43 , 1.15 , TOI 2319) using data from NASA's…

astro-ph.SR2021★ 25 cited

Long-term stellar activity variations and their effect on radial-velocity measurements

Jean C. Costes, Christopher A. Watson, Ernst de Mooij +8

Long-term stellar activity variations can affect the detectability of long-period and Earth-analogue extrasolar planets. We have, for 54 stars, analysed the long-term trend of five…

astro-ph.EP2021★ 1 cited

TOI-1634 b: an Ultra-Short Period Keystone Planet Sitting Inside the M Dwarf Radius Valley

R. Cloutier, D. Charbonneau, K. G. Stassun +63

Studies of close-in planets orbiting M dwarfs have suggested that the M dwarf radius valley may be well-explained by distinct formation timescales between enveloped terrestrials, a…