This proposal is a resubmission of an accepted RXTE AO 11 proposal. Our aim is to test evolutionary and type I burst models with the observed type I X-ray burst behaviour of the bright ultra-compact binary system 4U 1820-30. The short orbital period suggests that the companion white dwarf is hydrogen deficient, with evolutionary models predicting a

In a recent survey for baryonic matter at large scales in the Corona Borealis Supercluster, using the Sunyaev-Zeldovich (SZ) effect, it has been found SZ evidence (Génova-Santos et al. 2005, Battistelli et al. 2006) for a potentially large amount of warm/hot plasma towards the center of this supercluster, in a region where there are no known

Not Available

The presence of compact and massive star clusters is a characteristic property of many starburst and interacting galaxies. Their extreme mechanical and radiation energy outputs are now believed to be the largest negative feedback agents leading to a large-scale structuring of the ISM and limiting star formation in the host galaxies. The aim of our

SUNRISE is an international project for the development, construction, and operation of a balloon-borne solar telescope with an aperture of 1 m, working in the UV/VIS spectral domain. The main scientific goal of SUNRISE is to understand the structure and dynamics of the magnetic field in the atmosphere of the Sun. SUNRISE will provide near

We present Gemini North GMOS/IFU observations of the roots of the NGC 1569 super-galactic wind. This forms part of a larger and on-going study of the formation and collimation mechanisms of galactic winds. Four IFU pointings cover the base of the outflows originating from the central super-star clusters; we present a preliminary analysis for two