The old, red stars that constitute the bulges of galaxies, and the massive black holes at their centres, are the relics of a period in cosmic history when galaxies formed stars at remarkable rates and active galactic nuclei (AGN) shone brightly as a result of accretion onto black holes. It is widely suspected, but unproved, that the tight correlation between the mass of the black hole and the mass of the stellar bulge results from the AGN quenching the surrounding star formation as it approaches its peak luminosity. X-rays trace emission from AGN unambiguously, whereas powerful star-forming

We analyze the spectral asymmetry of Stokes V (circularly polarized) profiles of an individual network patch in the quiet Sun observed by Sunrise/IMaX. At a spatial resolution of 0".15-0".18, the network elements contain substructure which is revealed by the spatial distribution of Stokes V asymmetries. The area asymmetry between the red and blue lobes of Stokes V increases from nearly zero at the core of the structure to values close to unity at its edges (single-lobed profiles). Such a distribution of the area asymmetry is consistent with magnetic fields expanding with height, i.e., an

In order to fully understand the gravitational collapse of molecular clouds, the star formation process, and the evolution of circumstellar disks, these phenomena must be studied in different Galactic environments with a range of stellar contents and positions in the Galaxy. The young massive association Cygnus OB2, in the Cygnus-X region, is a unique target to study how star formation and the evolution of circumstellar disks proceed in the presence of a large number of massive stars. We present a catalog obtained with recent optical observations in the r, i, z filters with OSIRIS, mounted

OCAM 2 cuadriplica la resolución y multiplica por tres la velocidad de instrumentos similares. Con este dispositivo, que se unirá al sistema óptico adaptativo del GTC, el mayor telescopio del mundo podrá vencer las turbulencias de la atmósfera terrestre y obtener imágenes con una nitidez similar a la del telescopio espacial Hubble.

El acto se llevará a cabo hoy martes, 13 de diciembre, a las 18:00 horas en la Sala de Grados de la Facultad de Ciencias Físicas de la Universidad Complutense de Madrid (UCM)

Los responsables de los ocho centros y unidades de investigación españoles distinguidos con la acreditación de excelencia Severo Ochoa recogieron ayer, 28 de noviembre, sus acreditaciones en la sede del Ministerio de Ciencia e Innovación