Search for the Outer Boundary of the Starburst Galaxy: NGC 253

We propose a 89 ks EPIC observation of the outskirts (out to 30 kpc from thecenter) of the nearby bright starburst galaxy, NGC 253. Our goal is to detectthe extended superwind emission at large radii. We will constrain the densityand temperature profiles of the wind emission and compare them with thetheoretical models. We will also search for extended clumpy features smilier tothe Northern Cap in M82. These data can place important constraints on howstarburst galaxies heat and enrich their environments. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]