Are solar chromospheric fibrils tracing the magnetic field?
Fibrils are thin elongated features visible in the solar chromosphere in and around magnetized regions. Because of their visual appearance they have been...
Are Tornado-Like Magnetic Structures Able To Support Solar Prominence Plasma?
Recent high-resolution and high-cadence observations have surprisingly suggested that prominence barbs exhibit apparent rotating motions suggestive of a tornado...
Now almost 70 years since its introduction, the effective or half-light radius has become a very popular choice for characterising galaxy size. However, the...
Are ultra-diffuse galaxies structurally similar to low-surface-brightness galaxies?
A central question regarding ultra-diffuse galaxies (UDGs) is whether they are in a separate category from low-surface-brightness (LSB) galaxies, or just their...
Astronomy, Architecture and Symbolism: the global project of Sneferu at Dahshur.
The two pyramids built during the Old Kingdom by the Fourth Dynasty King Sneferu at Dahshur are usually considered as two consecutive projects, the second –...
Back to the Lithium Plateau with the [Fe/H] < -6 star J0023+0307
We present an analysis of the UVES high-resolution spectroscopic observations at the 8.2m VLT of J0023+0307, an extremely iron-poor dwarf star. We are unable to...
Bayesian Analysis of Multiple Harmonic Oscillations in the Solar Corona.
We present the first application of Bayesian model comparison techniques for solar atmospheric seismology. The detection of multiple mode harmonic kink...
Beyond the magnitude limit of the Hubble Deep Field
Using the Surface Brightness Fluctuation technique (SBF), IAC researchers have succeeded in detecting galaxies beyond Hubble's photometric detection limit...
Se ha medido el gradiente de abundancia de Oxígeno en la galaxia M33 con muestras relativamente grandes de regiones HII y usando dos métodos diferentes: primero...