This book gathers the invited conferences presented at the Thirteenth Joint European and National Astronomical Meeting (JENAM) organized by the - ropean Astronomical Society (EAS) and the Spanish Astronomical Society (Sociedad Española de Astronomía, SEA) and hosted by the Instituto de - trofísica de Andalucía (IAA - CSIC). The event, held from September 13 to 17, 2004 in Granada, was at the same time the Sixth Scienti c Meeting of the SEA. The proceedings of such national meetings are traditionally collected in a series of books generically entitled Highlights of Spanish Astrophysics, which will be momentarily interrupted in this occasion as the contributions of the Spanish astronomers to the meeting share the present publication with those of their colleagues from other European countries or, to be more exact, from countries all over the world. The meeting brought together, indeed, more than 450 participants from 30 different countries, making it one of the most successful JENAMs ever celebrated. This success was undoubtedly due to the fact that, as readily seen from the titles of the parallel sessions, the scienti c scope of this JENAM reached, for the st time, all elds of astronomy and astrophysics. In fact, there was still another parallel session opened to tea- ers and professionals of popularisation in astronomy whose proceedings are published elsewhere.

Very relevant experts from all over the world speak in a single book about the most recent, exciting results from their fields

Preface Committees Cosmic Microwave Background; Enrique Martínez-González and Patricio Vielva The Gravitational Lensing Effect in Cosmology; Genevieve Soucail The PLANCK Mission; J.A. Tauber Surveys of Extragalactic Sources with Planck; G. De Zotti, C. Burigana, M. Negrello, S. Tinti and R. Ricci, L. Silva, J. Gonzalez-Nuevo and L. Toffolatti New Physics in Clusters of Galaxies; M. Douspis Emission Line Galaxies in Clusters; Bianca M. Poggianti Active Galactic Nuclei and Surveys: the View from the New X-ray Observatories; X. Barcons Star-Forming Complexes in Galaxies; Bruce G. Elmegreen Star Formation and Infrared Emission in Galaxies; Nikolaos D. Kylafis and Angelos Misiriotis Evolution of the MilkyWay Disk; B. Nordström, J. Andersen Massive Stars in the Galactic Center; F. Najarro The Mass Spectrum of X-Ray Binaries; Jorge Casares Massive Stars in Starbursts; Alan Pedlar The Hot Content of Planetary Nebulae; Martin A. Guerrero, You-Hua Chu and Robert A. Gruendl The Hidden Life of Massive Stars; A. Lenorzer, A. Bik, M. R. Mokiem, A. de Koter, L. Kaper, L.B.F.M. Waters What can we learn about the Sun from observations in the near ultraviolet? Achim Gandorfer Our Magnetic Sun; E.R. Priest Moist Convective Storms in the Atmospheres of Jupiter and Saturn; Ricardo Hueso and Agustín Sánchez-Lavega Exploring the Solar System beyond Neptune; Jose L. Ortiz and Pablo Santos-Sanz Planet Detection with Large Telescopes and Interferometry; Andreas Quirrenbach AVO First Science; Mark G. Allen, Paolo Padovani, Piero Rosati, Nicholas A. Walton Euro50: A European 50 m Adaptive OpticsExtremely Large Telescope; Arne Ardeberg and Torben Andersen