Astrophysical: Chromospheres

  • Publication
    Analysis and modeling of high temporal resolution spectroscopic observations of flares on AD Leonis
    We report the results of a high temporal resolution spectroscopic monitoring of the flare star AD Leo. During 4 nights, more than 600 spectra were taken in the...
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    Analysis of the chromosphere and corona of low-activity early-M dwarfs
    While most of the exoplanets have been found orbiting around solar-type stars, low-mass stars have recently been recognized as ideal exo-life laboratory...
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    Characterization of the radial velocity signal induced by rotation in late-type dwarfs
    We investigate the activity-induced signals related to rotation and magnetic cycles in late-type stars (FGKM) and analyse the Ca II H&K, the H α and the radial...
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    Erratum: Rotation periods of late-type dwarf stars from time series high-resolution spectroscopy of chromospheric indicators
    Not Available
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    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...
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    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)...
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    High Temporal Resolution Spectra of Flare Stars
    The results of a high temporal resolution spectroscopic monitoring of the UV Cet type fare stars AD Leo and V1054 Oph are reported. Intermediate resolution...
  • Publication
    Library of high-resolution UES echelle spectra of F, G, K and M field dwarf stars
    We present a library of Utrecht echelle spectrograph (UES) observations of a sample of F, G, K and M field dwarf stars covering the spectral range from 4800...
  • Publication
    Low-resolution optical spectra of ultracool dwarfs with OSIRIS/GTC
    We present the results of low-resolution optical spectroscopy with OSIRIS/GTC (Optical System for Imaging and Low Resolution Integrated Spectroscopy/Gran...