Hot gas phase abundances in the 1 kpc central region of "hot-spot" galaxies.

Details Hot gas phase abundances in the 1 kpc central region of "hot-spot" galaxies. Hot gas phase abundances in the 1 kpc central region of "hot-spot" galaxies.

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007xmm..prop..193d&link_type=abstract

XMM-Newton Proposal ID #05562803

Physics

Galaxies, Galactic Surveys, Ngc3310, Ngc3310, Ngc2903, Xmm-Newton Proposal Id #05562803

Scientific paper

We propose to perform abundance determinations of the hot gas in the central sim 1 kpc of two galaxies with circumnuclear star forming regions for which the analysis of the warm ionized gas (HII regions) yields an oxygen abundance lower than expected from empirical abundance indicators. These findings point to an effect similar to what is found for M82, i.e. a defficiency of light alpha elements (O, Ne) in the central regions. If this is common among regions dominated by recent star formation, the oxygen abundances found for the warm ionized gas might not be representative of the true metal content of these regions. This could have a profound effect on abundance calibrations leading to fundamental relations like the Mass-Metallcity and Luminosity-Metallicity relations.

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