Reviewing: The outer ejecta of eta Carinae
| dc.creator | Weis, Kerstin | |
| dc.date | 2004-07-28 | |
| dc.date.accessioned | 2026-07-07T02:14:08Z | |
| dc.date.available | 2026-07-07T02:14:08Z | |
| dc.description | The nebula around eta Carinae consists of two distinct parts: the Homunculus and the outer ejecta. The outer ejecta are mainly a collection of numerous filaments, shaped irregularly and distributed over an area of 1arcminx1arcmin. While the Homunculus is mainly a reflection nebula, the outer ejecta are an emission nebula. Kinematic analysis of the outer ejecta (as the Homunculus) show their bi-directional expansion. Radial velocities in the outer ejecta reach up to >2000km/s and the gas gives rise to X-ray emission. The temperature of the X-ray gas is of the order of 0.65 keV. These shock temperatures indicate velocities of the shocking gas of 750km/s, about what was found for the average expansion velocity of the outer ejecta. HST/STIS data from the strings, long, highly collimated structures in the outer ejecta, show that the electron density of the strings is of the order of 10^4cm^-3 Other structures in the outer ejecta show similar values. String 1 has a mass of about 3 10^-4M_\sun, a density gradient along the strings or a denser leading head was not found. | |
| dc.description | short review, 5 pages, to appear in conference proceedings "The Fate of the Most Massive Stars", ASP conf series, paper with images in full resolution at http://www.astro.ruhr-uni-bochum.de/kweis/publications.html | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0407569 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0407569 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/8000 | |
| dc.subject | Astrophysics | |
| dc.title | Reviewing: The outer ejecta of eta Carinae | |
| dc.type | text |