The role of binarity in Wolf-Rayet central stars of planetary nebulae
| العنوان: | The role of binarity in Wolf-Rayet central stars of planetary nebulae |
|---|---|
| المؤلفون: | R. Manick, Brent Miszalski, Vanessa McBride |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | Physics, Stars, Wolf–Rayet star, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, General Engineering, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Orbital separation, Planetary nebula, Solar and Stellar Astrophysics (astro-ph.SR), Indirect evidence |
| الوصف: | Over a hundred planetary nebulae (PNe) are known to have H-deficient central stars that mimic the spectroscopic appearance of massive Wolf-Rayet stars. The formation of these low-mass Wolf-Rayet stars, denoted [WR] stars, remains poorly understood. While several binary formation scenarios have been proposed, there are too few [WR] binaries known to determine their feasibility. Out of nearly 50 post-common-envelope (post-CE) binary central stars known, only PN G222.8$-$04.2 ([WC7], $P=1.26$ d) and NGC 5189 ([WO1], $P=4.05$ d) have a [WR] component. The available data suggests that post-CE central stars with [WR] components lack main sequence companions and have a wider orbital separation than typical post-CE binaries. There is also some indirect evidence for wide binaries that could potentially lead to the discovery of more [WR] binaries. To appear in conference proceedings of the Physics of Evolved Stars meeting. 4 pages |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79aa7f79b6279abce09788da57fe944f http://arxiv.org/abs/1507.07707 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....79aa7f79b6279abce09788da57fe944f |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |