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The first water fountain in a planetary nebula

Published online by Cambridge University Press:  24 July 2012

Olga Suárez ,
José Francisco Gómez ,
Philippe Bendjoya ,
Luis. F. Miranda ,
Martín. A. Guerrero ,
Gerardo Ramos-Larios ,
J. Ricardo Rizzo  and
Lucero Uscanga
Olga Suárez
Affiliation:
Lab. Lagrange, UMR7293, UNSA, CNRS, Observatoire de la Côte d'Azur, F-06300 Nice, France
José Francisco Gómez
Affiliation:
Instituto de Astrofísica de Andalucía (IAA-CSIC), Glorieta de la Astronomía, s/n, E-18008 Granada, Spain
Philippe Bendjoya
Affiliation:
Lab. Lagrange, UMR7293, UNSA, CNRS, Observatoire de la Côte d'Azur, F-06300 Nice, France
Luis. F. Miranda
Affiliation:
Departamento de Física Aplicada, Facultade de Ciencias, Campus Lagos-Marcosende s/n, Universidade de Vigo, E-36310 Vigo, Spain (present address) Consejo Superior de Investigaciones Científicas (CSIC), c/ Serrano, 117, E-28006 Madrid, Spain
Martín. A. Guerrero
Affiliation:
Instituto de Astrofísica de Andalucía (IAA-CSIC), Glorieta de la Astronomía, s/n, E-18008 Granada, Spain
Gerardo Ramos-Larios
Affiliation:
Instituto de Astronomía y Meteorología, Av. Vallarta No. 2602, Col. Arcos Vallarta, 44130 Guadalajara, Jalisco, Mexico
J. Ricardo Rizzo
Affiliation:
Centro de Astrobiología (INTA-CSIC), Ctra. M-108, km. 4, E-28850 Torrejón de Ardoz, Spain
Lucero Uscanga
Affiliation:
Instituto de Astrofísica de Andalucía (IAA-CSIC), Glorieta de la Astronomía, s/n, E-18008 Granada, Spain Centro de Astrobiología (INTA-CSIC), Ctra. M-108, km. 4, E-28850 Torrejón de Ardoz, Spain Observatorio Astronómico Nacional (IGN), E-28014 Madrid, Spain
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Abstract

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Water fountains are evolved stars showing water masers with velocity spanning more than ~100 km/s. They usually appear at the end of the Asymptotic Giant Branch (AGB) phase or at the beginning of the post-AGB phase, and their masers trace the first manifestation of axisymmetric collimated mass-loss. For the first time, masers with water fountain characteristics have been detected towards a PN (IRAS 15103–5754), which might require a revision of the current theories about jet formation and survival times. IRAS 15103-5754 was observed using the ATCA interferometer at 22 GHz (both continuum and water maser). The main results of these observations are summarized here. The evolutionary classification of this object is also discussed.

Keywords

masersstars: AGB and post-AGBstars: evolutionISM: planetary nebulae: individual (IRAS 15103-5754)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S287: Cosmic Masers - from OH to H0 , January 2012 , pp. 230 - 234
Copyright
Copyright © International Astronomical Union 2012

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