AAS Meeting #194 - Chicago, Illinois, May/June 1999
Session 64. Shells in the Global ISM
Topical, Oral, Wednesday, June 2, 1999, 8:30-10:00am, 10:45am-12:30pm, 2:00-3:30pm, Continental Ballroom B

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[64.13] Starbursts and the Mixing of Heavy Elements with the ISM of Different Hubble Type Galaxies

G. Tenorio-Tagle (INAOE)

Here I show the two clear different paths followed by the ejecta of correlated supernovae as a result of the size of the starburst and the density and mass of their parent galaxy. In the case of the nuclei of massive ellipticals and bulges of spirals, as well as for nuclear starbursts in spiral galaxies, it is quite clear that most of the metals produced by the massive bursts of star formation are dumped onto the intergalactic medium. This happens once the resultant superbubble reaches the outskirts of a galaxy, causing a super or galactic wind. The product of less massive starbursts is however retained by galaxies, even in the case of blue compact dwarfs, leading after several times 108 yr to an enhanced abundance of their ISM.

I shall review the steps required for a "rapid" and a "slow" mixing of heavy elements with the ISM and show under which conditions they apply.

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