We describe the highly variable X-ray and UV emission of V458 Vul (Nova Vul 2007), observed by Swift between 1 and 422 days after outburst. Initially bright only in the UV, V458 Vul became a variable hard X-ray source due to optically thin thermal emission at kT = 0.64 keV with an X-ray band unabsorbed luminosity of 2.3 × 1034 erg s-1 during days

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ATLAS3D is a multi-wavelength, volume-limited survey of 263 morphologically-selected early-type galaxies within a distance of 42 Mpc and complete to MK

In this contribution we present the first results of an theoretical attempt to address the question of the evacuation time-scale but also the star-formation efficiency and the influence of feedback on the most-massive star in a star cluster. With the use of stellar evolution models, known descriptions for the evolution of an ionised sphere around a

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We present the results and future prospects of an extensive study of the spatial distribution of stars, dust and gas in nearby galaxies, aimed at understanding the assembly, evolution and interplay of these components of spiral disks. As a first step we have derived the radial distribution of dust properties (attenuation, PAH abundance, dust-to-gas