PODEMOS SER COMPETITIVOS EN I+D+i , también ahora (Análisis de un caso de éxito: ASTROFÍSICA ESPAÑOLA) Francisco Sánchez Foro España Innova, 6/2/2012 No voy a hablarles esta mañana ni de planetas extrasolares, ni de estrellas de neutrones, agujeros negros, materia obscura, energía obscura, ni de ninguna otra maravilla del misterioso Universo al que pertenecemos. Tampoco es mi intención hacer un discurso apologético, resaltando los mil y un beneficios de la Ciencia y del poder de la investigación para promover la competitividad y la recuperación económica, (todos los aquí presentes ya lo

Informe Semanal ha viajado al Instituto de Astrofísica de Canarias para conocer los últimos proyectos que nos acercan más al Sol.

La colaboración SDSS-III, en la que participa el IAC, anuncia nuevos resultados del proyecto BOSS sobre la enigmática energía oscura y los neutrinos, las elusivas partículas subatómicas claves para entender tanto el origen del universo como las supernovas

Simulations have shown that a diverse range of extrasolar terrestrial planet bulk compositions are likely to exist based on the observed variations in host star elemental abundances. Based on recent studies, it is expected that a significant proportion of host stars may have Mg/Si ratios below 1. Here we examine this previously neglected group of systems. Planets simulated as forming within these systems are found to be Mg-depleted (compared to Earth), consisting of silicate species such as pyroxene and various feldspars. Planetary carbon abundances also vary in accordance with the host star

The best spectrographs are limited in stability by their calibration light source. Laser frequency combs are the ideal calibrators for astronomical spectrographs. They emit a spectrum of lines that are equally spaced in frequency and that are as accurate and stable as the atomic clock relative to which the comb is stabilized. Absolute calibration provides the radial velocity of an astronomical object relative to the observer (on Earth). For the detection of Earth-mass exoplanets in Earth-like orbits around solar-type stars, or of cosmic acceleration, the observable is a tiny velocity change

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 temperature (T eff), the acceleration of gravity (g), and the turbulent velocity (v t) for 26 spectra. The standard deviations average are 82 K for T eff, 0.23 for log g, and 1.1 km s -1 for v t. Methods: A comparison of B - V observations, MK spectral