The extraordinary planetary nebula N66 in the LMC
- Morphology of the planetary nebula LMC-N66 (ionized by a [WN] star) indicates that the nebula is a multipolar object with a very narrow waist. It shows several jets, knots and filaments in opposite directions from the central star. A couple of twisted long filaments could be interpreted as due to point-symmetric type ejection. If such is the case, the progenitor would be a binary precessing system. High resolution spectroscopy shows that most of the material is approaching or receding from the star. However the line profiles are very complex, showing several components at different velocities. Our high resolution spectroscopic data show that the different structures (knots, filaments, ...) present different radial velocities spreading from 240 to more than 400 km/s. The system velocity is 300 km/s. There are high velocity knots located to the north of the central star, moving at more than 100 km/s relative to the system velocity.
| Author details: | M Pena, A. Peimbert, Wolf-Rainer HamannORCiDGND, M. T. Ruiz, M. Peimbert |
|---|---|
| ISBN: | 3-12-283174-0 |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2004 |
| Publication year: | 2004 |
| Release date: | 2017/03/24 |
| Source: | Asymmetric Planetary Nebulae III : proceedings of a meeting held at Mt. Rainer, Washington, 28. July - 1. August 2003 / Hrsg.: Margaret Meixer ; Joel H. Kastner ; Bruce Balick ; Noam Soker. - San Francisco, Calif. : Astronomical Society of the Pacific, 2004. - (Conference series / Astronomical society of the Pacific ; 313). - ISBN:3- 12-283174-0. - S. 131 |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Peer review: | Nicht referiert |
| Institution name at the time of the publication: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik |
