Schwarzschild orbit-based dynamical models are widely used to uncover the internal dynamics of early-type galaxies and globular clusters. Here we present for...
Origin of the chromospheric three-minute oscillations in sunspot umbrae
Context. Sunspot umbrae show a change in the dominant period of their oscillations from five minutes (3.3 mHz) in the photosphere to three minutes (5.5 mHz) in...
Origin of the near-Earth asteroid Phaethon and the Geminids meteor shower
Aims: In this paper we establish a compositional and dynamical connection between two B-type objects: main belt asteroid (2) Pallas and near-Earth asteroid...
OSIRIS tunable imager and spectrograph: Instrument status
OSIRIS (Optical System for Imaging and low Resolution Integrated Spectroscopy) is the optical Day One instrument for the GTC and the only Spanish Day One...
Outer density profiles of 19 Galactic globular clusters from deep and wide-field imaging
Using deep photometric data from Wide Field Camera at the Isaac Newton Telescope and Wide Field Imager at the ESO 2.2-m telescope we measure the outer number...
Outflows from starburst galaxies with various driving mechanisms and their X-ray properties
Outflows in starburst galaxies driven by thermal-mechanical energy, cosmic rays, and their mix are investigated with 1D and 2D hydrodynamic simulations. We show...
PCA detection and denoising of Zeeman signatures in polarised stellar spectra
Aims: Our main objective is to develop a denoising strategy to increase the signal to noise ratio of individual spectral lines of stellar spectropolarimetric...