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Título: | Looking for new water-fountain stars |
Autor: | Uscanga, Lucero; Gómez Rivero, José Francisco; Yung, B.H.K.; Imai, H.; Rizzo, José Ricardo CSIC ORCID; Suárez, O.; Miranda, Luis F. CSIC ORCID; Trinidad, M.A.; Anglada-Escudé, Guillem CSIC ORCID; Torrelles, José M. CSIC ORCID | Palabras clave: | masers-stars: AGB and post-AGB | Fecha de publicación: | 2019 | Editor: | Cambridge University Press | Citación: | Proceedings of the International Astronomical Union 343: 527-528 (2019) | Resumen: | We carried out simultaneous observations of HO and OH masers, and radio continuum at 1.3 cm with the Karl G. Jansky Very Large Array (VLA) towards 4 water-fountain candidates. Water fountains (WFs) are evolved stars, in the AGB and post-AGB phase, with collimated jets traced by high-velocity HO masers. Up to now, only 15 sources have been confirmed as WFs through interferometric observations. We are interested in the discovery and study of new WFs. A higher number of these sources is important to understand their properties as a group, because they may represent one of the first manifestations of collimated mass-loss in evolved stars. These observations will provide information about the role of magnetic fields in the launching of jets in WFs. Our aim is to ascertain the WF nature of these candidates, and investigate the spatial distribution of the HO and OH masers.© International Astronomical Union 2019. | Versión del editor: | http://dx.doi.org/10.1017/S1743921318007354 | URI: | http://hdl.handle.net/10261/205213 | DOI: | 10.1017/S1743921318007354 | Identificadores: | doi: 10.1017/S1743921318007354 issn: 1743-9221 other 978-0-521-76488-9 |
Aparece en las colecciones: | (CAB) Comunicaciones congresos (ICE) Comunicaciones congresos (IAA) Artículos |
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