Lines of research: Exoplanetary Systems & Solar System (SEYSS)

Exoplanetary Systems & Solar System (SEYSS)

The area of planetary and solar systems involves several research groups working on Exoplanets, Solar System and Cultural Astronomy. Our main objectives are:

  • The detection and characterization of giant and rocky planets around nearby stars using the most advanced instruments (CARMENES, ESPRESSO, HARPS Norte y Sur, SONG, LCO, MUSCAT2) and space missions (CoRoT, Kepler K2, CHEOPS, TESS and PLATO). The group is particularly interested in the study of terrestrial planets in the habitable zone of their host stars where water can be in liquid form.
  • The characterization of the atmospheres of planets to know their structure and composition, both by transits and direct imaging, using ground-based telescopes such as GTC and space missions such as CHEOPS.
  • Investigate the formation of exoplanet systems by studying the chemical composition of planet host stars, and the dynamical evolution of exoplanets at their early stages of formation.
  • Study the physical properties of different families of minor bodies of the Solar System (asteroids, comets, trans-neptunian objects, etc.) to understand the origin and evolution of Solar System with GTC and space missions such as OSIRIS-REx.
  • The study of ancient cosmologies through cultural astronomy and the defense of cultural heritage through the astronomy.
  • Publication
    Radial velocity confirmation of K2-100b: a young, highly irradiated, and low-density transiting hot Neptune
    We present a detailed analysis of HARPS-N radial velocity observations of K2-100, a young and active star in the Praesepe cluster, which hosts a transiting...
  • Publication
    Radial velocity follow-up of GJ1132 with HARPS. A precise mass for planet b and the discovery of a second planet
    The source GJ1132 is a nearby red dwarf known to host a transiting Earth-size planet. After its initial detection, we pursued an intense follow-up with the...
  • Publication
    Radio emission in a nearby, ultra-cool dwarf binary: A multifrequency study
    Context. The substellar triple system VHS J125601.92−125723.9 (hereafter VHS 1256−1257) is composed of an equal-mass M7.5 brown dwarf binary and an L7 low-mass...
  • Publication
    Raman, FT-IR spectroscopy and morphology of carbon dust from carbon arc in liquid benzene
    The carbon arc in liquid benzene produces carbon dust in addition to phenylacetyene and a number of other molecular products. The carbon dust was analyzed by...
  • Publication
    Rapid contraction of giant planets orbiting the 20-million-year-old star V1298 Tau
    Current theories of planetary evolution predict that infant giant planets have large radii and very low densities before they slowly contract to reach their...
  • Publication
    Rapid contraction of giant planets orbiting the 20-million-year-old star V1298 Tau
    Current theories of planetary evolution predict that infant giant planets have large radii and very low densities before they slowly contract to reach their...
  • Publication
    Rapid Rotation of Low-mass Red Giants Using APOKASC: A Measure of Interaction Rates on the Post-main-sequence
    We investigate the occurrence rate of rapidly rotating (v{sin}i >10 km s‑1), low-mass giant stars in the Apache Point Observatory Galaxy Evolution Experiment...
  • Publication
    Rb-Rich Asymptotic Giant Branch Stars in the Magellanic Clouds
    We present high-resolution (R ~ 60,000) optical spectra of a carefully selected sample of heavily obscured and presumably massive O-rich asymptotic giant branch...
  • Publication
    Red giants observed by CoRoT and APOGEE: The evolution of the Milky Way's radial metallicity gradient
    Using combined asteroseismic and spectroscopic observations of 418 red-giant stars close to the Galactic disc plane (6 kpc RGal ≲ 13 kpc, | ZGal| 0.3 kpc), we...