%0 Journal Article
%T H II Regions and Protosolar Abundances in Galactic Chemical Evolution
%A Carigi
%A L.
%A Peimbert
%A M
%J Revista mexicana de astronom¨ªa y astrof¨ªsica
%D 2011
%I Universidad Nacional Aut¨®noma de M¨¦xico
%X we present chemical evolution models of the galactic disk with different z dependent yields. we find that a moderate mass loss rate for massive stars of solar metallicity produces an excellent fit to the observed c/h and c/o gradients of the galactic disk. the best model also fits: the h, he, c, and o abundances derived from recombination lines of m17, the protosolar abundances, and the c/o-o/h, c/fe-fe/h, and o/fe-fe/h relations derived from solar vicinity stars. the agreement of the model with the protosolar abundances implies that the sun originated at a galactocentric distance similar to the one it has now. our model for r = 3 kpc implies that a fraction of the stars in the direction of the bulge formed in the inner disc. we obtain a good agreement between our model and the c/o versus o/h relationship derived from extragalactic h ii regions in spiral galaxies.
%K galaxies [abundances]
%K galaxies [evolution]
%K galaxy [bulge]
%K h ii regions
%K ism [abundances]
%K sun [abundances].
%U http://www.scielo.org.mx/scielo.php?script=sci_abstract&pid=S0185-11012011000100010&lng=en&nrm=iso&tlng=en