Journal: Astronomy and Astrophysics

  • Publication
    H.E.S.S. and MAGIC observations of a sudden cessation of a very-high-energy γ-ray flare in PKS 1510‒089 in May 2016
    The flat spectrum radio quasar (FSRQ) PKS 1510‒089 is known for its complex multiwavelength behaviour and it is one of only a few FSRQs detected in very-high...
  • Publication
    HADES RV program with HARPS-N at the TNG GJ 3998: An early M-dwarf hosting a system of super-Earths
    Context. Many efforts are currently made to detect Earth-like planets around low-mass stars in almost every extra-solar planet search. M dwarfs are considered...
  • Publication
    HADES RV program with HARPS-N at the TNG. IX. A super-Earth around the M dwarf Gl 686
    Aims: The HArps-n red Dwarf Exoplanet Survey (HADES) is providing a major contribution to the widening of the current statistics of low-mass planets, through...
  • Publication
    HADES RV Programme with HARPS-N at TNG . III. Flux-flux and activity-rotation relationships of early-M dwarfs
    Context. Understanding stellar activity in M dwarfs is crucial for the physics of stellar atmospheres and for ongoing radial velocity exoplanet programmes...
  • Publication
    HADES RV Programme with HARPS-N at TNG. II. Data treatment and simulations<xref ref-type="fn" rid="FN1">
    Context. The distribution of exoplanets around low-mass stars is still not well understood. Such stars, however, present an excellent opportunity for reaching...
  • Publication
    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...
  • Publication
    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)...
  • Publication
    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...
  • Publication
    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...