activity
20202026
most citedNIRPS joining HARPS at ESO 3.6 m. On-sky performance and science objectives

29 citations · 71 across the 10 of their papers we have counts for

collaborators

10 papers

astro-ph.EP2026

NIRPS tightens the mass estimate of GJ 3090 b and detects a planet near the stellar rotation period

Pierrot Lamontagne, Drew Weisserman, Charles Cadieux +148

We present an updated characterization of the planetary system orbiting the nearby M2 dwarf GJ 3090 (TOI-177; pc), based on new high-precision radial velocity (RV) observa…

astro-ph.EP2025★ 5 cited

NIRPS and TESS reveal a peculiar system around the M dwarf TOI-756: A transiting sub-Neptune and a cold eccentric giant

Léna Parc, François Bouchy, Neil J. Cook +148

The Near InfraRed Planet Searcher (NIRPS) joined HARPS on the 3.6-m ESO telescope at La Silla Observatory in April 2023, dedicating part of its Guaranteed Time Observations (GTO) p…

astro-ph.EP2025★ 2 cited

Quantifying thermal water dissociation in the dayside photosphere of WASP-121 b using NIRPS

Luc Bazinet, Romain Allart, Björn Benneke +119

The intense stellar irradiation of ultra-hot Jupiters results in some of the most extreme atmospheric environments in the planetary regime. On their daysides, temperatures can be s…

astro-ph.IM2025★ 29 cited

NIRPS joining HARPS at ESO 3.6 m. On-sky performance and science objectives

Francois Bouchy, Rene Doyon, Francesco Pepe +131

The Near-InfraRed Planet Searcher (NIRPS) is a high-resolution, high-stability near-infrared (NIR) spectrograph equipped with an AO system. Installed on the ESO 3.6-m telescope, it…

astro-ph.EP2025★ 11 cited

Diving into the planetary system of Proxima with NIRPS -- Breaking the metre per second barrier in the infrared

Alejandro Suárez Mascareño, Étienne Artigau, Lucile Mignon +138

We obtained 420 high-resolution spectra of Proxima, over 159 nights, using the Near Infra Red Planet Searcher (NIRPS). We derived 149 nightly binned radial velocity measurements wi…

astro-ph.EP2025

Blind search for activity-sensitive lines in the near-infrared using HARPS and NIRPS observations of Proxima and Gl 581

João Gomes da Silva, Elisa Delgado-Mena, Nuno C. Santos +145

Stellar activity variability is one of the main obstacles to the detection of Earth-like planets using the RV method. The aim of this work is to measure the effect of activity in t…

astro-ph.IM2025

NuAncestor: an artificial satellite-borne star for accurate frequency calibration of ground-based EPRV spectrographs

F. Pepe, M. Bugatti, A. Baur +17

The accuracy of state-of-the-art Extreme Precision Radial Velocity (EPRV) spectrographs depends on the access to extremely precise and stable wavelength calibration sources. There…

astro-ph.SR2024

Detailed cool star flare morphology with CHEOPS and TESS

G. Bruno, I. Pagano, G. Scandariato +79

Context. White-light stellar flares are proxies for some of the most energetic types of flares, but their triggering mechanism is still poorly understood. As they are associated wi…

astro-ph.EP2023★ 23 cited

Investigating the visible phase-curve variability of 55 Cnc e

E. A. Meier Valdés, B. M. Morris, B. -O. Demory +87

55 Cnc e is an ultra-short period super-Earth transiting a Sun-like star. Previous observations in the optical range detected a time-variable flux modulation that is phased with th…

astro-ph.IM2020★ 1 cited

HIRES, the high-resolution spectrograph for the ELT

Alessandro Marconi, Manuel Abreu, Vardan Adibekyan +99

HIRES will be the high-resolution spectrograph of the European Extremely Large Telescope at optical and near-infrared wavelengths. It consists of three fibre-fed spectrographs prov…