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 …

The CARMENES search for exoplanets around M dwarfs-Planet occurrence rates from a subsample of 71 stars

S Sabotta, M Schlecker, P Chaturvedi… - Astronomy & …, 2021 - aanda.org
Context. The CARMENES exoplanet survey of M dwarfs has obtained more than 18 000
spectra of 329 nearby M dwarfs over the past five years as part of its guaranteed time …

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) …

RV-detected planets around M dwarfs: Challenges for core accretion models

M Schlecker, R Burn, S Sabotta, A Seifert… - Astronomy & …, 2022 - aanda.org
Context. Planet formation is sensitive to the conditions in protoplanetary disks, for which
scaling laws as a function of stellar mass are known. Aims. We aim to test whether the …

A super-Earth and a mini-Neptune near the 2: 1 MMR straddling the radius valley around the nearby mid-M dwarf TOI-2096

FJ Pozuelos, M Timmermans, BV Rackham… - Astronomy & …, 2023 - aanda.org
Context. Several planetary formation models have been proposed to explain the observed
abundance and variety of compositions of super-Earths and mini-Neptunes. In this context …

The CARMENES search for exoplanets around M dwarfs-Wolf 1069 b: Earth-mass planet in the habitable zone of a nearby, very low-mass star

D Kossakowski, M Kürster, T Trifonov… - Astronomy & …, 2023 - aanda.org
We present the discovery of an Earth-mass planet (M b sin i= 1.26±0.21 M⊕) on a 15.6 d
orbit of a relatively nearby (d~ 9.6 pc) and low-mass (0.167±0.011 M⊙) M5. 0 V star, Wolf …

The CARMENES M-dwarf planet survey

A Quirrenbach… - Ground-based and …, 2020 - spiedigitallibrary.org
The CARMENES instrument consists of two cross-dispersed´ echelle spectrographs, which
together cover the wavelength range from 5,200 to 17,100˚ A. During its first five years of …

A Comparison of the Composition of Planets in Single-planet and Multiplanet Systems Orbiting M dwarfs

RR Martínez, DV Martin, BS Gaudi… - The Astronomical …, 2023 - iopscience.iop.org
We investigate and compare the composition of M-dwarf planets in systems with only one
known planet (" singles") to those residing in multiplanet systems (" multis") and the …

A planetary system with two transiting mini-Neptunes near the radius valley transition around the bright M dwarf TOI-776

R Luque, LM Serrano, K Molaverdikhani… - Astronomy & …, 2021 - aanda.org
We report the discovery and characterization of two transiting planets around the bright M1 V
star LP 961-53 (TOI-776, J= 8.5 mag, M= 0.54±0.03 M⊙) detected during Sector 10 …

An ultra-short-period transiting super-Earth orbiting the M3 dwarf TOI-1685

P Bluhm, E Pallé, K Molaverdikhani, J Kemmer… - Astronomy & …, 2021 - aanda.org
Dynamical histories of planetary systems, as well as the atmospheric evolution of highly
irradiated planets, can be studied by characterizing the ultra-short-period planet population …