AA Dor - An Eclipsing sdOB - Brown Dwarf Binary
| dc.creator | Rauch, Thomas | |
| dc.date | 2003-11-25 | |
| dc.date.accessioned | 2026-07-07T02:11:20Z | |
| dc.date.available | 2026-07-07T02:11:20Z | |
| dc.description | AA Dor is an eclipsing, close, post common-envelope binary consisting of a sdOB primary star and an unseen secondary with an extraordinary small mass - formally a brown dwarf. The brown dwarf may have been a former planet which survived a common envelope phase and has even gained mass. A recent determination of the components' masses from results of NLTE spectral analysis and subsequent comparison to evolutionary tracks shows a discrepancy to masses derived from radial-velocity and the eclipse curves. Phase-resolved high-resolution and high-SN spectroscopy was carried out in order to investigate on this problem. We present results of a NLTE spectral analysis of the primary, an analysis of its orbital parameters, and discuss possible evolutionary scenarios. | |
| dc.description | 8 pages, 4 figures, Workshop on Extreme Horizontal Branch Stars and Related Objects, Jun 2003, Keele, UK | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0311558 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0311558 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/7045 | |
| dc.subject | Astrophysics | |
| dc.title | AA Dor - An Eclipsing sdOB - Brown Dwarf Binary | |
| dc.type | text |