La formación estelar es el factor más importante que controla la evolución de las galaxias, con la posible excepción de la interacción galaxia-galaxia, y se ha convertido en uno de los campos más investigados y discutidos en la astronomía actual. Los detalles de la interacción entre el contenido de gas de las galaxias y los procesos que disparan la

El proyecto MASGOMAS (``MAssive Stars in Galactic Obscured MAssive clusterS'') tiene como objetivo descubrir, observar y caracterizar físicamente cúmulos jóvenes, masivos (varios miles de masas solares) y altamente enrojecidos, pertenecientes a nuestra Galaxia, en especial aquellos cuya masa total excede 10000 masas solares. Estos cúmulos, de los

We study for the first time the environment of massive black hole (BH) seeds (˜104-5 M⊙) formed via the direct collapse of pristine gas clouds in massive haloes (≥107 M⊙) at z > 6. Our model is based on the evolution of dark matter haloes within a cosmological N-body simulation, combined with prescriptions for the formation of BH along with both

Context. The VISTA Variable Survey (VVV) is able to map the Galaxy at l ≤ 0° with an unpaired depth (at least 3 mag deeper than 2MASS), opening new possibilities for studying the inner structure of the Milky Way. Aims: In this paper we concentrate on the exploitation of these data to better understand the spatial disposition and distribution of the

We present deep Gemini Multi-Object Spectrograph-South optical broad-band images for a complete sample of 20 Sloan Digital Sky Survey selected type II quasars taken from Zakamska et al., with redshifts in the range 0.3 z 0.41 and [O III]λ5007 emission-line luminosities L[O iii ]>108.5 L . The images were taken with the aim of investigating the

Context. We study the time history of the yellow hypergiant HR 8752 based on high-resolution spectra (1973-2005), the observed MK spectral classification data, B - V- and V-observations (1918-1996) and yet earlier V-observations (1840-1918). Aims: Our local thermal equilibrium analysis of the spectra yields accurate values of the effective