Gauging the Helium Abundance of the Galactic Bulge RR Lyrae Stars

The objective of this thesis is the study of the massive stars belonging to two of the most emblematic clusters of the Galactic centre, the Arches and Quintuplet clusters, both

(2013, hereafter MA13), we find that, whilst the metallicity distribution of planet-hosting giant stars with stellar masses M  > 1.5 M  follows the general trend that has

Recent observations of the bulge display a gradient of the mean metallicity and of [Ƚ/Fe] with distance from galactic plane.. Bulge regions away from the plane are less

In the previous sections we have shown how astronomical alignments and solar hierophanies – with a common interest in the solstices − were substantiated in the

Díaz Soto has raised the point about banning religious garb in the ―public space.‖ He states, ―for example, in most Spanish public Universities, there is a Catholic chapel

The spatially-resolved information provided by these observations are allowing us to test and extend the previous body of results from small-sample studies, while at the same time

The high eccentricity of the planet is uncommon among planetary systems orbiting evolved stars and so is the high lithium abundance in a giant starM. The ingestion by the star of

The atomic mirror is a fundamental element in the development of a scanning neutral helium microscope (NEMI), which uses a focused beam of helium atoms to image the surface of