Abundance gradients and the role of SNe in M87

Details Abundance gradients and the role of SNe in M87 Abundance gradients and the role of SNe in M87

2002-02-05

arxiv.org/abs/astro-ph/0202095v1

Astronomy and Astrophysics

Astrophysics

19 pages, 11 figures included (Fig.1 in color), LaTeX emulateapj5.sty, accepted for publication by the Astrophysical Journal

Scientific paper

10.1086/340283

We make a detailed measurement of the metal abundance profiles and metal abundance ratios of the inner core of M87/Virgo observed by XMM-Newton during the PV phase. We use multi temperature models for the inner regions and we compare the plasma codes APEC and MEKAL. We confirm the strong heavy elements gradient previously found by ASCA and BeppoSAX, but also find a significant increase in light elements, in particular O. This fact together with the constant O/Fe ratio in the inner 9 arcmin indicates an enhancement of contribution in the core of the cluster not only by SNIa but also by SNII.

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