Hot gas phase abundances in the 1 kpc central region of \d_commahot-spot\d_comma galaxies.

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 whichthe analysis of the warm ionized gas (HII regions) yields an oxygen abundancelower than expected from empirical abundance indicators. These findings point toan effect similar to what is found for M82, i.e. a defficiency of light alphaelements (O, Ne) in the central regions. If this is common among regionsdominated by recent star formation, the oxygen abundances found for the warmionized gas might not be representative of the true metal content of theseregions. This could have a profound effect on abundance calibrations leading tofundamental relations like the MassMetallcity and LuminosityMetallicity relations. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]