activity
20162026
most citedThree years of Sun-as-a-star radial-velocity observations on the approach to solar minimum

149 citations · 932 across the 38 of their papers we have counts for

collaborators
Showing 2020Show all

5 papers · 1 filter

astro-ph.EP2020★ 60 cited

An unusually low density ultra-short period super-Earth and three mini-Neptunes around the old star TOI-561

G. Lacedelli, L. Malavolta, L. Borsato +38

Based on HARPS-N radial velocities (RVs) and TESS photometry, we present a full characterisation of the planetary system orbiting the late G dwarf TOI-561. After the identification…

astro-ph.EP2020★ 35 cited

Detection Limits of Low-mass, Long-period Exoplanets Using Gaussian Processes Applied to HARPS-N Solar RVs

N. Langellier, T. W. Milbourne, D. F. Phillips +29

Radial velocity (RV) searches for Earth-mass exoplanets in the habitable zone around Sun-like stars are limited by the effects of stellar variability on the host star. In particula…

astro-ph.EP2020★ 19 cited

Global Analysis of the TRAPPIST Ultra-Cool Dwarf Transit Survey

F. Lienhard, D. Queloz, M. Gillon +10

We conducted a global analysis of the TRAPPIST Ultra-Cool Dwarf Transit Survey - a prototype of the SPECULOOS transit search conducted with the TRAPPIST-South robotic telescope in…

astro-ph.SR2020★ 59 cited

Unsigned magnetic flux as a proxy for radial-velocity variations in Sun-like stars

R. D. Haywood, T. W. Milbourne, S. H. Saar +7

We estimate disc-averaged RV variations of the Sun over the last magnetic cycle, from the single Fe I line observed by SDO/HMI, using a physical model for rotationally modulated ma…

astro-ph.SR2020★ 24 cited

The spectral impact of magnetic activity on disk-integrated HARPS-N solar observations: exploring new activity indicators

A. P. G. Thompson, C. A. Watson, R. D. Haywood +21

Stellar activity is the major roadblock on the path to finding true Earth-analogue planets with the Doppler technique. Thus, identifying new indicators that better trace magnetic a…