Large Scale Circumgalactic Coronae around Massive Spiral Galaxies

Extended coronae around massive spiral galaxies is a key prediction of galaxyformation theory. There are very few such galaxies in the local Universe andeven fewer deep Xray observations of them. We propose to observe 5 luminous,fast rotating, isolated, SF quiescent, and massive spiral galaxies with a totaleffective exposure of 337ks with XMMNewton. When combined with archival Xrayobservations of 4 other galaxies, the proposal will enable us to compile aminisample optimized to constrain the mechanisms responsible for establishingthe hot CGM. We will compare radial distributions of coronal properties to thestateoftheart hydrodynamical simulations, measure the total baryon content,and establish scaling relations of the coronal and other galaxy properties. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]