Publication type: Refereed

  • Publication
    Ca II H and K and Hα, and Li abundances in the pleiades late K main-sequence
    We have observed seven main sequence stars in the Pleiades, with B - V between 0.98 and 1.41 (5100-3900 K), and with a wide range of rotational velocities, in...
  • Publication
    CA II H emission line cores of late-type dwarfs - Variability measurements and velocity field diagnostics
    High-resolution spectra of Alpha Cen B, Xi Boo A, 70 Oph A, and Epsilon Ind obtained using the Coude Echelle Spectrometer and the 1.4-m Coude Auxiliary...
  • Publication
    Ca II H high-resolution spectral monitoring of active late-type dwarfs
    We have monitored Ca II H with a spectral resolution of 8 x 104, in a sample of late-type MS stars over a four-year period. The high resolution enables us to...
  • Publication
    Ca line formation in late-type stellar atmospheres. I. The model atom
    Context. Departures from local thermodynamic equilibrium (LTE) distort the calcium abundance derived from stellar spectra in various ways, depending on the...
  • Publication
    Calcium triplet metallicity calibration for stars in the Galactic bulge
    Aims: We present a new calibration of the calcium II triplet equivalent widths versus [Fe/H], constructed upon K giant stars in the Galactic bulge. This...
  • Publication
    Calibrating Convective Properties of Solar-like Stars in the Kepler Field of View
    Stellar models generally use simple parameterizations to treat convection. The most widely used parameterization is the so-called mixing-length theory where the...
  • Publication
    Calibrating HMI Magnetograms Using an End-to-end Magnetograph Model
    Numerous solar and space science and operations projects rely heavily on accurate, consistent magnetic field measurements from the solar surface. These projects...
  • Publication
    Calibrating the absolute magnitude of type Ia supernovae in nearby galaxies using [O II] and implications for H<SUB>0</SUB>
    The present state of cosmology is facing a crisis where there is a fundamental disagreement in measurements of the Hubble constant ( $H_{0}$), with significant...
  • Publication
    Calibrating the Clock of JWST
    JWST, despite not being designed to observe astrophysical phenomena that vary on rapid timescales, can be an unparalleled tool for such studies. If timing...