Dust distribution in circumstellar shells

Autor:	van Marle, Allard Jan, Meliani, Zakaria, Keppens, Rony, Decin, Leen
Rok vydání:	2011
Předmět:	Astrophysics - Solar and Stellar Astrophysics Astrophysics - Astrophysics of Galaxies
Druh dokumentu:	Working Paper
DOI:	10.1017/S1743921312012203
Popis:	We present numerical simulations of the hydrodynamical interactions that produce circumstellar shells. These simulations include several scenarios, such as wind-wind interaction and wind-ISM collisions. In our calculations we have taken into account the presence of dust in the stellar wind. Our results show that, while small dust grains tend to be strongly coupled to the gas, large dust grains are only weakly coupled. As a result, the distribution of the large dust grains is not representative of the gas distribution. Combining these results with observations may give us a new way of validating hydrodynamical models of the circumstellar medium. Comment: 2 pagers, 2 figures, to appear in the proceedings of: "Planetary nebulae, an Eye to the Future", Tenerife, Spain, July 2011
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1110.3144 Zobrazit plný text záznamu View this record from Arxiv