Density, not radius, separates rocky and water-rich small planets orbiting M dwarf stars

R Luque, E Pallé - Science, 2022 - science.org
Exoplanets smaller than Neptune are common around red dwarf stars (M dwarfs), with those
that transit their host star constituting the bulk of known temperate worlds amenable for …

CARMENES input catalogue of M dwarfs-V. Luminosities, colours, and spectral energy distributions

C Cifuentes, JA Caballero, M Cortés-Contreras… - Astronomy & …, 2020 - aanda.org
Context. The relevance of M dwarfs in the search for potentially habitable Earth-sized
planets has grown significantly in the last years. Aims. In our on-going effort to …

juliet: a versatile modelling tool for transiting and non-transiting exoplanetary systems

N Espinoza, D Kossakowski… - Monthly Notices of the …, 2019 - academic.oup.com
Here we present juliet, a versatile tool for the analysis of transits, radial velocities, or both.
juliet is built over many available tools for the modelling of transits, radial velocities, and …

Revisited mass-radius relations for exoplanets below 120 M⊕

JF Otegi, F Bouchy, R Helled - Astronomy & Astrophysics, 2020 - aanda.org
The masses and radii of exoplanets are fundamental quantities needed for their
characterisation. Studying the different populations of exoplanets is important for …

The CARMENES search for exoplanets around M dwarfs-Guaranteed time observations Data Release 1 (2016-2020)

I Ribas, A Reiners, M Zechmeister… - Astronomy & …, 2023 - aanda.org
Context. The CARMENES instrument, installed at the 3.5 m telescope of the Calar Alto
Observatory in Almería, Spain, was conceived to deliver high-accuracy radial velocity (RV) …

Public HARPS radial velocity database corrected for systematic errors

T Trifonov, L Tal-Or, M Zechmeister, A Kaminski… - Astronomy & …, 2020 - aanda.org
Context. The High Accuracy Radial velocity Planet Searcher (HARPS) spectrograph has
been mounted since 2003 at the ESO 3.6 m telescope in La Silla and provides state-of-the …

Evolution of the radius valley around low-mass stars from Kepler and K2

R Cloutier, K Menou - The Astronomical Journal, 2020 - iopscience.iop.org
We present calculations of the occurrence rate of small close-in planets around low-mass
dwarf stars using the known planet populations from the Kepler and K2 missions. Applying …

The CARMENES search for exoplanets around M dwarfs-Stellar atmospheric parameters of target stars with STEPARSYN

E Marfil, HM Tabernero, D Montes… - Astronomy & …, 2021 - aanda.org
We determined effective temperatures, surface gravities, and metallicities for a sample of
343 M dwarfs observed with CARMENES, the double-channel, high-resolution spectrograph …

Masses and compositions of three small planets orbiting the nearby M dwarf L231-32 (TOI-270) and the M dwarf radius valley

V Van Eylen, N Astudillo-Defru, X Bonfils… - Monthly Notices of …, 2021 - academic.oup.com
We report on precise Doppler measurements of L231-32 (TOI-270), a nearby M dwarf (d= 22
pc, M⋆= 0.39 M⊙, R⋆= 0.38 R⊙), which hosts three transiting planets that were recently …

The 10 parsec sample in the Gaia era

C Reylé, K Jardine, P Fouqué, JA Caballero… - Astronomy & …, 2021 - aanda.org
Context. The nearest stars provide a fundamental constraint for our understanding of stellar
physics and the Galaxy. The nearby sample serves as an anchor where all objects can be …