The dual dust chemistry - binarity connection
| dc.creator | De Marco, Orsola | |
| dc.creator | Jones, A. F. | |
| dc.creator | Barlow, M. J. | |
| dc.creator | Cohen, M. | |
| dc.date | 2003-09-29 | |
| dc.date.accessioned | 2026-07-07T02:09:50Z | |
| dc.date.available | 2026-07-07T02:09:50Z | |
| dc.description | Accumulating evidence points to a binary nature for the Wolf-Rayet ([WC]) central stars, a group that constitutes about 15% of all central stars of planetary nebula. From ISO observations, a dual dust chemistry (oxygen- and carbon-rich) has been shown to be almost exclusively associated with [WC] central stars, a fact that could be explained by O-rich dust residing in a disk, while the C-rich dust being more widely distributes. HST/STIS space resolved spectroscopy of the [WC10] central star CPD-568032, is interpreted as revealing a dust disk or torus around the central star. This, together with CPD-568032's variable lightcurve is taken as an indirect indication of binarity. Finally, we present here, for the first time, preliminary results from a radial velocity survey of central stars. Out of 18 stars with excellent data at least 8 are radial velocity variables. If these turn out to be binaries, it is likely that the central star binary fraction is as high as about 50%. | |
| dc.description | Proceedings contribution to the 3rd Asymmetrical Planetary Nebula meeting, Mt. Reinier, July 28 - August 1, 2003. 4 pages, 1 figure | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0309789 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0309789 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/6584 | |
| dc.subject | Astrophysics | |
| dc.title | The dual dust chemistry - binarity connection | |
| dc.type | text |