Dusty super star cluster winds: their impact on the interstellar medium and infrared manifestations
| Main Author: | Martínez González, Sergio |
|---|---|
| Format: | info publication-thesis Journal |
| Bahasa: | eng |
| Terbitan: |
, 2015
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/1014671 |
Daftar Isi:
- In light of the growing evidence pointing at core-collapse supernovae as large dust producers, and given their immense number in young massive stellar clusters (SSCs), this work is devoted to address the influence of stochastic injection, sputtering and outflow of dust grains on their emission properties inside the hot and dense intracluster medium. The theory of dust radiative cooling, which considers time-dependent dust size distributions and chemical composition, is combined with a self-consistent semi-analytic method, in order to study the hydrodynamics of spherically symmetric winds driven by SSCs with a generalized Schuster stellar density profile. The location of the critical line, which separates stationary from thermally unstable winds, defined by Tenorio-Tagle et al. (2007) is thus reexamined. In addition, the dusty wind model is applied to the high velocity blue-shifted absorption features observed in the optical spectra of the central cluster of PHL 293B. Then infrared spectral energy distributions which are to be expected from the dusty interior of SSCs are presented using the theory of stochastic dust temperature fluctuations. The last part of the thesis is focused on studying the effects that radiation pressure, acting on dust grains and recombining atoms, has on the distribution of density and thermal pressure within wind-blown shells and thus how it may affect the velocity of the outer shock and the dynamics of the ionized gas around young stellar clusters. As a result of all these considerations, this work offers predictions for the observational manifestations of young dusty star clusters in the infrared, optical, ultraviolet and X-ray regimes.
- PhD Thesis in Astrophysics, INAOE 2015. Awarded Best Doctoral Thesis in Astronomy at the 2017 Mexican National Contest (Period 2015-2016).