Density Inhomogeneity in the X-ray Tail of NGC 7619

We propose a 40ks XMM observation of the Xray bright elliptical galaxy, NGC7619. The Xray tail in NGC 7619 provides a rare opportunity to directlyinvestigate density inhomogeneity in the hot ISM. With detailed information ofclumpy substructures in the dynamically disturbed hot ISM, we will addressinhomogeneous cooling which may similarly take place within the cooling regionnear the center of the cooling flow. We will determine metal abundance and itsvariation between the dense clumps and diffuse gas, and will test the hypothesisof extreme metallicity variation. Because the Xray emission in the Xray tailis free from the contribution of LMXB and AGN, the interpretation of Xray dataand hence abundance measurement is less complex than in the cooling core. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]