Wolf-Rayet Central Stars and the Binary Evolution Channel
Fuente:
Redalyc
Saved in:
| Main Author: | |
|---|---|
| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad Nacional Autónoma de México
2003
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1876455701920874496 |
|---|---|
| author | Orsola De Marco |
| author_facet | Orsola De Marco |
| contents | Wolf-Rayet Central Stars and the Binary Evolution Channel Orsola De Marco Eric L. Sandquist Falk Herwig Ronald E. Taam Mordecai Mark Mac Low Física, Astronomía y Matemáticas Agb Stars: Evolution Methods: Numerical Stars: Agb And Post Single star evolutionary calculations have recently succeeded in reproducing the composition of the hydrogen deficient Wolf-Rayet (WR) central stars of planetary nebula (PN). However, the latest infra-red observations, made it clear that the single star scenario is at odds with the properties of the dust surrounding many WR central stars. Binarity, on the other hand, can potentially explain the infra-red observations, as well as other a viable way of depleting a star of its outer, H-rich envelope. In this work we expose two binary scenarios first discussed in connection to WR central stars by De Marco & Soker. In the first, a close binary system results in back-owing material and ultimately in a H-deficient central star of PN. This scenario, is invoked to explain the [WC10] central star CPD-56º8032 and its dusty disk. The second scenario envisages that the majority of WR central stars are the result of a merger with a low mass companion during the Asymptotic Giant Branch (AGB) phase. This scenario is partly tested here, by 3-dimensional hydrodynamical models, which simulate the common envelope phase between 0.1 and 0.2-M๏ companions and an AGB star at the first and tenth thermal pulse. 2003 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57101808 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) Vol.18 |
| format | Artículo científico |
| id | redalyc_57101808 |
| institution | Redalyc |
| language | en |
| publishDate | 2003 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Wolf-Rayet Central Stars and the Binary Evolution Channel Orsola De Marco Física, Astronomía y Matemáticas Agb Stars: Evolution Methods: Numerical Stars: Agb And Post Wolf-Rayet Central Stars and the Binary Evolution Channel Orsola De Marco Eric L. Sandquist Falk Herwig Ronald E. Taam Mordecai Mark Mac Low Física, Astronomía y Matemáticas Agb Stars: Evolution Methods: Numerical Stars: Agb And Post Single star evolutionary calculations have recently succeeded in reproducing the composition of the hydrogen deficient Wolf-Rayet (WR) central stars of planetary nebula (PN). However, the latest infra-red observations, made it clear that the single star scenario is at odds with the properties of the dust surrounding many WR central stars. Binarity, on the other hand, can potentially explain the infra-red observations, as well as other a viable way of depleting a star of its outer, H-rich envelope. In this work we expose two binary scenarios first discussed in connection to WR central stars by De Marco & Soker. In the first, a close binary system results in back-owing material and ultimately in a H-deficient central star of PN. This scenario, is invoked to explain the [WC10] central star CPD-56º8032 and its dusty disk. The second scenario envisages that the majority of WR central stars are the result of a merger with a low mass companion during the Asymptotic Giant Branch (AGB) phase. This scenario is partly tested here, by 3-dimensional hydrodynamical models, which simulate the common envelope phase between 0.1 and 0.2-M๏ companions and an AGB star at the first and tenth thermal pulse. 2003 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57101808 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) Vol.18 |
| title | Wolf-Rayet Central Stars and the Binary Evolution Channel |
| topic | Física, Astronomía y Matemáticas Agb Stars: Evolution Methods: Numerical Stars: Agb And Post |
| url | https://www.redalyc.org/articulo.oa?id=57101808 |