Corpus ID: 116920519

Gaseous abundances in M82

  title={Gaseous abundances in M82},
  author={Piero Ranalli and Andrea Comastri and Livia Origlia and Roberto Maiolino and Kazuo Makishima Riken and Japan. and INAF-Osservatorio astronomico di Bologna and Inaf - Arcetri and University of Tokyo},
  journal={arXiv: Astrophysics},
We present the preliminary analysis of a deep (100ks) XMM-Newton observation of M82. The spatial distribution of the abundances of chemical elements (Fe, O, Ne, Mg, Si, S) is investigated through narrow-band imaging analisys and spatially-resolved spectroscopy. We find that the abundances of alpha-elements follow a bipolar distribution, these elements being more abundant in the gaseous outflow than in the galaxy centre. This behaviour is found to be more marked for lighter elements (O, Ne) than… Expand