The nature of strings in the nebula around Eta Carinae
| dc.creator | Weis, Kerstin | |
| dc.creator | Duschl, Wolfgang J. | |
| dc.creator | Chu, You-Hua | |
| dc.date | 1999-07-26 | |
| dc.date.accessioned | 2026-07-07T02:32:38Z | |
| dc.date.available | 2026-07-07T02:32:38Z | |
| dc.description | Eta Carinae is one of the most extreme cases of a Luminous Blue Variable star. A bipolar nebula of 17" size surrounds the central object. Even further out, a large amount of filamentary material extends to a distance of 30" or about 0.3 pc. In this paper we present a detailed kinematic and morphological analysis of some outer filaments in this nebula which we call strings. All strings are extremly long and narrow structures. We identified 5 strings which have sizes of 0.058 to 0.177 pc in length and a width of only 0.002 pc. Using high-resolution long-slit echelle spectroscopy it was found that the strings follow a Hubble law with velocities increasing towards larger distances from the star. With these unique properties, high collimation and linear increase of the radial velocity the strings represent a newly found phenomena in the structure and evolution of nebulae around LBVs. Finally, we show that morphologically similar strings can be found in the planetary nebula NGC 6543, a possible PN-counterpart to this phenomenon. | |
| dc.description | 9 pages, 7 figures, accepted for publication in A&A | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9907361 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9907361 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/14533 | |
| dc.subject | Astrophysics | |
| dc.title | The nature of strings in the nebula around Eta Carinae | |
| dc.type | text |