LBVs and the nature of the S Dor cycles: the case of AG Carinae
| dc.creator | Groh, J. H. | |
| dc.creator | Damineli, A. | |
| dc.creator | Hillier, D. J. | |
| dc.date | 2007-02-22 | |
| dc.date.accessioned | 2026-07-07T07:48:05Z | |
| dc.date.available | 2026-07-07T07:48:05Z | |
| dc.description | We present the results of a detailed spectroscopic analysis of 20 years of observations of AG Carinae using the radiative transfer code CMFGEN. Among the conclusions of this work, we highlight the importance of including time-dependent effects in the analysis of the full S Dor cycle. We obtained that the mass-loss rate is approximately constant during the cool phases, implying that the S Dor-type eruptions begin well earlier than the maximum seen in the visual lightcurve. We also determined that the S Dor cycles are ultimately a consequence of an increase/decrease of the hydrostatic radius in combination with the formation of a pseudo-photosphere. | |
| dc.description | 2 pages, 2 figures, to appear in the Proceedings of "Massive Stars: Fundamental Parameters and Circumstellar Interactions" | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0702612 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0702612 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/124378 | |
| dc.subject | Astrophysics | |
| dc.title | LBVs and the nature of the S Dor cycles: the case of AG Carinae | |
| dc.type | text |