XMM-Newton Proposal 02047910

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Wlm, Ngc 147, Ngc 185, Ngc 205, Leo A, Sextans B, Ngc 3109, Draco, Ursa Minor, Ic 1613, Xmm-Newton Proposal 02047910

Scientific paper

We propose XMM observations of 10 dwarf galaxies (DGs) in the Local Group. The galaxies form a uniformly selected sample whose members span a wide range of morphologies and of physical parameters, including total mass, fraction of mass in neutral hydrogen, and mass-to-light ratios. With 115 ksec in total, we will reach luminosity limits ranging from 3e33 erg/s to 1.2e36 erg/s. We will detect more than 100 X-ray sources (XRSs). Our primary goal is to explore the range of X-ray properties of DGs. We will (1) probe the nuclear regions, (2) compare XRSs in regions with recent star formation with those in older populations, (3) determine if there is a per capita excess of XRSs relative to the disk of the Milky Way, and (4) relate the X-ray properties of DGs to their other characteristics.

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