El Nuevo Telescopio Robótico (NRT) será el telescopio robótico más grande del mundo. Ubicado en el Observatorio del Roque de los Muchachos (La Palma), está...
NGC 2419: a large and extreme second generation in a currently undisturbed cluster
We analyse complementary Hubble Space Telescope and Subaru data for the globular cluster NGC 2419. We make a detailed analysis of the horizontal branch (HB)...
OCCASO - II. Physical parameters and Fe abundances of red clump stars in 18 open clusters
Open clusters have long been used to study the chemodynamical evolution of the Galactic disc. This requires a homogeneously analysed sample covering a wide...
Old Main-Sequence Turnoff Photometry in the Small Magellanic Cloud. II. Star Formation History and its Spatial Gradients
We present a quantitative analysis of the star formation history (SFH) of 12 fields in the Small Magellanic Cloud (SMC) based on unprecedented deep [(B - R), R]...
On a New Near-Infrared Method to Estimate the Absolute Ages of Star Clusters: NGC 3201 as a First Test Case
We present a new method to estimate the absolute ages of stellar systems. This method is based on the difference in magnitude between the main-sequence turnoff...
On a New Parameter to Estimate the Helium Content in Old Stellar Systems
We introduce a new parameter Δξ-the difference in magnitude between the red giant branch (RGB) bump and the point on the main sequence (MS) at the same color as...
We present precise and deep optical photometry of the globular M92. Data were collected in three different photometric systems: Sloan Digital Sky Survey (g ', r...
On the Density Profile of the Globular Cluster M92
We present new number density and surface brightness profiles for the globular cluster M92 (NGC 6341). These profiles are calculated from optical images...
On the Distance and Reddening of the Starburst Galaxy IC 10
We present deep and accurate optical photometry of the Local Group starburst galaxy IC 10. The photometry is based on two sets of images collected with the...