Massive stars (M ≥ 9 M_{&sun;}) are usually formed in OB associations, consisting of one or more not very massive open clusters and a halo of scattered young...
Serial nominations for the AWH initiative: the paradigm of seven-stone antas and beyond
Seven-stone antas are a group of megalithic monuments that were built in the southwest of the Iberian Peninsula for a period of some one thousand years in the...
Serial nominations for the AWH initiative: The paradigm of seven-stone antas and beyond
In this short report we examine the ideal status of the seven-stone antas (a type of very ancient megalithic monument in the southwest of the Iberian Peninsula)...
Servo control simulations and preliminary laboratory results for GTC adaptive optics with NGS
The Gran Telescopio Canarias Adaptive Optics (GTCAO) is a single-conjugated post-focal system with a Shack Hartmann wavefront sensor, and one Deformable Mirror...
SERVS: the Spitzer Extragalactic Representative Volume Survey
We will use warm Spitzer to image 18deg^2 of sky to microJy depth. This is deep enough to undertake a complete census of massive galaxies from z~6 to ~1 in a...
Seven Problems Related to the Determination of the Primordial Helium Abundance
Recent advances on the quest to determine the primordial or pregalactic helium abundance, Yp, are reviewed. There are seven problems affecting the He/H...
The study of the IR emission from Seyfert galaxies is of key importance for understanding the origin of the extraordinary nuclear activity seen in these objects...