On the dispersal and mixing of heavy elements |
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| Institution: | 1. Shenzhen Institute, Peking University, Shenzhen 518057, China;2. Jiangsu University of Science and Technology, Zhenjiang 212003, China;3. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;4. Shenzhen Yezhan Electronics Co., Ltd, Shenzhen 518110, China |
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| Abstract: | Two different paths can be followed by the ejecta of correlated supernovae as a result of the size of the starburst, and the mass and density of the 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 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 superwind. The product of less massive starbursts is, however, retained by galaxies, even in the case of blue compact dwarfs, leading, after 100 Myr, to an enhanced abundance of the ISM. Here, I 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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