Abstract
In the chemodynamical models of galaxies the energy input from massive stars into the ambient medium results in a self-regulation of the star formation rate (SFR). A thorough analytical and numerical study of this model shows that there is always a strong and negative feed-back, and the SFR becomes almost independent of the assumed stellar birth function (SBF). The time-scale to reach this equilibrium is much shorter than the gas consumption time-scale, hence the models evolve along this solution for most of the time. This mechanism provides a physical explanation for a quadratic dependence of the SFR on gas density. For more details cf. Köppen et al. (1995), A&A 296, 99 and in preparation.
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© 1996 Springer Science+Business Media Dordrecht
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Köppen, J., Theis, C., Hensler, G. (1996). Self-Regulated Star-Formation in Galaxies. In: Bender, R., Davies, R.L. (eds) New Light on Galaxy Evolution. International Astronomical Union / Union Astronomique Internationale, vol 171. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0229-9_113
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DOI: https://doi.org/10.1007/978-94-009-0229-9_113
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