C, S, Zn and Cu abundances in planet-harbouring stars
We present a detailed and uniform study of C, S, Zn and Cu abundances in a large set of planet host stars, as well as in a homogeneous comparison sample of...
C/O vs. Mg/Si ratios in solar type stars: The HARPS sample
Context. Aims: We aim to present a detailed study of the magnesium-to-silicon and carbon-to-oxygen ratios (Mg/Si and C/O) and their importance in determining...
Ca II 8542 Å brightenings induced by a solar microflare
Aims: We study small-scale brightenings in Ca II 8542 Å line-core images to determine their nature and effect on localized heating and mass transfer in active...
Ca II and Hα flaring M dwarfs detected with multi-filter photometry
Context. Understanding and characterising the magnetic activity of M dwarfs is of paramount importance in the search for Earth-like exoplanets orbiting them...
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...
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...
CALIFA reveals prolate rotation in massive early-type galaxies: A polar galaxy merger origin?
We present new evidence for eight early-type galaxies (ETGs) from the CALIFA Survey that show clear rotation around their major photometric axis ("prolate...
CALIFA, the Calar Alto Legacy Integral Field Area survey. I. Survey presentation
The final product of galaxy evolution through cosmic time is the population of galaxies in the local universe. These galaxies are also those that can be studied...
CALIFA, the Calar Alto Legacy Integral Field Area survey. II. First public data release
We present the first public data release (DR1) of the Calar Alto Legacy Integral Field Area (CALIFA) survey. It consists of science-grade optical datacubes for...