We present Galactic mean metallicity maps derived from the first year of the SDSS-III APOGEE experiment. Mean abundances in different zones of projected Galactocentric radius (0 R 15 kpc) at a range of heights above the plane (0 |z| 3 kpc), are derived from a sample of nearly 20,000 giant stars with unprecedented coverage, including stars in

Review of the book : Architecture, Astronomy and Sacred Landscape in Ancient Egypt. Giulio Magli (Cambridge University Press, Cambridge, 2013). Pp. xii + 272. £60. ISBN 978-1-10703-208-8.

Aims: We present a portrait of the active Centaur P/2010 C1 (Scotti), observed with a well developed comet-like activity (central diffuse coma condensation and an extended sharp tail-like structure) at the heliocentric distance of rh = 5.5 AU. Methods: We analyse multicolour (B, V, R, and I) images taken at the TNG telescope to characterise the

This thesis focuses on the quantitative spectroscopic study of the O dwarf population in 30 Doradus (Large Magellanic Cloud, LMC), aiming at clarifying some long-standing open questions about the formation, evolution and physical properties of O stars during their main-sequence phase, where they spend most of their lifetime. This work has been

The fraction of star-forming to quiescent dwarf galaxies varies from almost infinity in the field to zero in the centers of rich galaxy clusters. What is causing this pronounced morphology-density relation? What do quiescent dwarf galaxies look like when studied in detail, and what conclusions can be drawn about their formation mechanism? Here we