Astrofísicas: Técnicas

  • Publicación
    HADES RV Programme with HARPS-N at TNG. IV. Time resolved analysis of the Ca ii H&K and Hα chromospheric emission of low-activity early-type M dwarfs
    Context. M dwarfs are prime targets for current and future planet search programs, particularly those focused on the detection and characterization of rocky...
  • Publicación
    HADES RV Programme with HARPS-N at TNG. V. A super-Earth on the inner edge of the habitable zone of the nearby M dwarf GJ 625
    We report the discovery of a super-Earth orbiting at the inner edge of the habitable zone of the star GJ 625 based on the analysis of the radial-velocity (RV)...
  • Publicación
    HADES RV Programme with HARPS-N at TNG. VI. GJ 3942 b behind dominant activity signals
    Context. Short- to mid-term magnetic phenomena on the stellar surface of M-type stars can resemble the effects of planets in radial velocity data, and may also...
  • Publicación
    HADES RV programme with HARPS-N at TNG. VII. Rotation and activity of M-dwarfs from time-series high-resolution spectroscopy of chromospheric indicators
    We aim to investigate the presence of signatures of magnetic cycles and rotation on a sample of 71 early M-dwarfs from the HADES RV programme using high...
  • Publicación
    HADES RV programme with HARPS-N at TNG. XII. The abundance signature of M dwarf stars with planets
    Context. Most of our current knowledge on planet formation is still based on the analysis of main sequence, solar-type stars. Conversely, detailed chemical...
  • Publicación
    HADES RV programme with HARPS-N at TNG. XIV. A candidate super-Earth orbiting the M-dwarf GJ 9689 with a period close to half the stellar rotation period
    Context. It is now well-established that small, rocky planets are common around low-mass stars. However, the detection of such planets is challenged by the...
  • Publicación
    HADES RV Programme with HARPS-N at TNG. XV. Planetary occurrence rates around early-M dwarfs
    Aims: We present the complete Bayesian statistical analysis of the HArps-n red Dwarf Exoplanet Survey (HADES), which monitored the radial velocities of a large...
  • Publicación
    HADES RV Programme with HARPS-N at TNG: XVI. A super-Earth in the habitable zone of the GJ 3998 multi-planet system
    The low masses of M dwarfs create attractive opportunities for exoplanet radial-velocity (RV) detections. These stars, however, exhibit strong stellar activity...
  • Publicación
    HD 110067 c has an aligned orbit. Measuring the Rossiter-McLaughlin effect inside a resonant multi-planet system with ESPRESSO
    Planetary systems in mean motion resonances hold a special place among the planetary population. They allow us to study planet formation in great detail as...