تقرير
The formation of `columns crowns' by jets interacting with a circumstellar dense shell
| العنوان: | The formation of `columns crowns' by jets interacting with a circumstellar dense shell |
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| المؤلفون: | Akashi, Muhammad, Soker, Noam |
| سنة النشر: | 2018 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Solar and Stellar Astrophysics |
| الوصف: | We conduct three-dimensional hydrodynamical simulations of two opposite jets that interact with a spherical slow wind that includes a denser shell embedded within it, and obtain a bipolar nebula where each of the two lobes is composed of two connected bubbles and Rayleigh-Taylor instability tongues that protrude from the outer bubble and form the `columns crown'. The jets are launched for a short time of 17 years and inflate a bipolar nebula inside a slow wind. When the bipolar structure encounters the dense shell, the interaction causes each of the two lobes to split to two connected bubbles. The interaction is prone to Rayleigh-Taylor instabilities that form tongues that protrude as columns from the outer bubble. The bases of the columns form a ring on the surface of the outer bubble, and the structure resemble a crown that we term the columns crown. This structure resembles, but is not identical to, the many filaments that protrude from the lobes of the bipolar planetary nebula Menzel~3. We discuss our results in comparison to the structure of Menzel~3 and the ways by which the discrepancies can be reconciled, and possibly turn our failure to reproduce the exact structure of Menzel~3 to a success with jets-shell interaction simulations that include more ingredients. Comment: Accepted to MNRAS |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1093/mnras/sty2479 |
| URL الوصول: | http://arxiv.org/abs/1808.00276 |
| رقم الأكسشن: | edsarx.1808.00276 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1093/mnras/sty2479 |
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