Salvato in:
| Autore principale: | |
|---|---|
| Natura: | Artículo científico |
| Lingua: | en |
| Pubblicazione: |
Universidad Nacional Autónoma de México
2021
|
| Soggetti: | |
| Accesso online: | https://www.redalyc.org/articulo.oa?id=57171643002 https://www.redalyc.org/journal/571/57171643002/ https://www.redalyc.org/journal/571/57171643002/html/ https://www.redalyc.org/journal/571/57171643002/57171643002.epub https://www.redalyc.org/journal/571/57171643002/movil |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
Sommario:
- Velocity segregation in a clump-like outflow with a non-top hat velocity cross-section A. Castellanos-Ramírez A. C. Raga J. Cantó A. Rodríguez-González L. Hernández-Martínez Física, Astronomía y Matemáticas outflows ISM: Herbig Haro objects stars: winds ISM: jets and outows High velocity clumps joined to the outflow source by emission with a “Hubble law” ramp of linearly increasing radial velocity vs. distance are observed in some planetary nebulae and in some outflows in star formation regions. We propose a simple model in which a “clump” is ejected from a source over a period τ 0, with a strong axis to edge velocity stratification. This non-top hat cross section results in the production of a highly curved working surface (initially being pushed by the ejected material, and later coasting along due to its inertia). From both analytic models and numerical simulations we find that this working surface has a linear velocity vs. position ramp, and therefore reproduces in a qualitative way the “Hubble law clumps” in planetary nebulae and outflows from young stars. 2021 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57171643002 https://www.redalyc.org/journal/571/57171643002/ https://www.redalyc.org/journal/571/57171643002/html/ https://www.redalyc.org/journal/571/57171643002/57171643002.epub https://www.redalyc.org/journal/571/57171643002/movil 10.22201/ia.01851101p.2021.57.02.02 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.2 Vol.57