About
Keywords: cool stars · binaries · exoplanets · radial velocity
February 2026
Invited talk: "M dwarfs in multiple star systems"
Lund University, Sweden
January 2026
Agencia Espacial Española, Seville
October 2025
Local Organising Committee
European Space Astronomy Centre, Spain
October 2025
Talk: "Exoplanets in triple star systems"
European Space Astronomy Centre, Spain
July 2025
Talk: "Exoplanets in triple star systems"
University of Coimbra, Portugal
PI: J. Lillo Box
The KOBE experiment is a legacy radial-velocity survey using CARMENES at Calar Alto. By targeting the overlooked K dwarfs, KOBE bridges the gap between G- and M‑dwarf studies.
Team member
PIs: P.J. Amado, A. Quirrenbach
CARMENES is a dual-channel high-resolution spectrograph operating at the 3.5m Calar Alto telescope, dedicated to the detection of terrestrial-mass exoplanets around M dwarfs.
Consortium member
CARMENES @ Calar Alto 3.5m
High-resolution visible and near-infrared spectroscopy for radial velocity measurements and stellar characterization
PI on proposals
Co-I on proposals
Observing runs
Regular observing campaigns for stellar multiplicity and exoplanet detection programs
- Triple star systems with planets
- Spectroscopic binaries in KOBE sample
- Young M dwarf characterization
Publications
Refereed articles
The following is a selection of papers published in refereed journals. For a complete list, visit my profile on ADS.
2025
Balsalobre-Ruza et al.
The first discovery of the KOBE project: two super-Earth- or sub-Neptune-mass planets orbiting a quiet K7 star.
exoplanets
Cifuentes et al.
Complete multiplicity study ranging from close spectroscopic binaries to ultra-wide companions.
multiplicity
latest
2024
González-Payo et al.
Detailed study of 212 exoplanet host stars in multiple systems, revealing how stellar multiplicity influences planet formation.
exoplanets
Cortés-Contreras et al.
Exhaustive kinematic analysis of 2187 M dwarfs, identifying 191 young star candidates.
kinematics
2023
C. Cifuentes | PhD thesis
2022
Caballero et al.
An improved characterization of the nearby warm rocky planet Gl 486 b achieving 4.7% precision in radius and 4.2% in mass.
exoplanets
2021
Marfil et al.
Bayesian determination of effective temperatures, surface gravities, and metallicities for 343 M dwarfs using spectral synthesis.
stellar parameters
2020
Cifuentes et al.
Benchmark study for colours and stellar parameters of M dwarfs in the CARMENES input catalogue.
stellar parameters
top cited
2019
Schweitzer et al.
Precise radii and masses for 293 nearby M dwarfs, achieving 2-5% precision and consistency across techniques.
stellar parameters
Martínez-Rodríguez et al.
Among 33 exoplanets in habitable zones around M dwarfs, four are capable of hosting stable Moon- to Titan-mass exomoons.
exomoons
Data
Search in the catalogues and ask my thesis.