X-ray evidence for spectroscopic diversity of type Ia supernovae: XMM observation of the elemental abundance pattern in M87

  title={X-ray evidence for spectroscopic diversity of type Ia supernovae: XMM observation of the elemental abundance pattern in M87},
  author={Alexis Finoguenov and Kyoko Matsushita and Hans B{\"o}hringer and Yasushi Ikebe and Monique D. Arnaud},
  journal={Astronomy and Astrophysics},
We present the results of a detailed element abundance study of hot gas in M 87, observed by XMM-Newton. We choose two radial bins, $1'{-}3'$ and $8'{-}16'$ ($8'{-}14'$ for EMOS; hereafter the central and the outer zones), where the temperature is almost constant, to carry out the detailed abundance measurements of O, Ne, Mg, Si, S, Ar, Ca, Fe and Ni using EPIC-PN (EPN) and -MOS (EMOS) data. First, we find that the element abundance pattern in the central compared to the outer zone in M 87 is… 

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