| 书目名称 | Post-AGB Objects as a Phase of Stellar Evolution |
| 编辑 | Ryszard Szczerba,Sławomir K. Górny |
| 视频video | |
| 丛书名称 | Astrophysics and Space Science Library |
| 图书封面 |  |
| 描述 | The term proto-planetary nebulae (PPNe) in the context of the late stages of stellar evolution was created only slightly more than 20 years ago to express the belief that in the near future these objects will become planetary nebulae (PNe). The first proto-planetary nebulae (called also post-Asymptotic Giant Branch, or shortly post-AGB objects) AFGL 2688 and AFGL 618 were discovered in mid seventies in course of the Air Force Sky Survey. Investigation of this phase of stellar evolution developed very rapidly in 1980‘s after the IRAS mission when it became clear that proto-planetary nebulae emit a significant part of their energy in the mid-and far-infrared. Hundreds of new candidates have been proposed but the recognition of the real proto-planetary nebulae is not a simple task and needs a substantial effort to exclude cases that represent different evolutionary stages. High resolution spectroscopy of stellar atmospheres is of much importance in this respect. Surprisingly, only a small group of central stars, the so called 21 11m emitters, show chemical signatures of the 3 rd dredge up process. Very recently, a more detailed studies of mid-infrared spectra from the Infrared Space |
| 出版日期 | Book 2001 |
| 关键词 | photometry; planet; smoothed-particle hydrodynamics (SPH); spectroscopy; stars; stellar; stellar evolution |
| 版次 | 1 |
| doi | https://doi.org/10.1007/978-94-015-9688-6 |
| isbn_softcover | 978-90-481-5758-7 |
| isbn_ebook | 978-94-015-9688-6Series ISSN 0067-0057 Series E-ISSN 2214-7985 |
| issn_series | 0067-0057 |
| copyright | Springer Science+Business Media B.V. 2001 |
发表于 2025-3-21 19:52:40
