Superbubbles and the physics of mixing
We evaluate the minimum energy input rate that starbursts require for expelling their newly processed matterfrom their host galaxies. To this end we rst review the main facts about the power expected from correlatedmassive stars and the hydrodynamics that they induce in their host ISM. Our estimate...
| Author: | |
|---|---|
| Format: | article |
| Status: | Published version |
| Publication Date: | 2002 |
| Country: | México |
| Institution: | Instituto Nacional de Astrofísica, Óptica y Electrónica |
| Repository: | Redalyc-INAOE |
| OAI Identifier: | oai:redalyc.org:57112023 |
| Online Access: | https://www.redalyc.org/articulo.oa?id=57112023 |
| Access Level: | Open access |
| Keyword: | Física, Astronomía y Matemáticas GALAXIES: ISM HYDRODYNAMICS GALAXIES: EVOLUTION GALAXIES: STARBURST GALAXIES: ABUNDANCES |
| Summary: | We evaluate the minimum energy input rate that starbursts require for expelling their newly processed matterfrom their host galaxies. To this end we rst review the main facts about the power expected from correlatedmassive stars and the hydrodynamics that they induce in their host ISM. Our estimate of the minimum energyinput rate required for mass ejection into the intergalactic medium results from special consideration of thepressure caused by the environment in which a galaxy is situated, as well as to the intrinsic rotation of thegaseous component. We account for these factors and for a massive dark matter distribution, and develop aself-consistent solution for the interstellar matter gas distribution. Our results are in excellent agreement withthe results of Mac Low & Ferrara (1999) for galaxies with a attened disk-like ISM density distribution and alow intergalactic gas pressure (PIGM=k 1 cm |
|---|