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  • Imaging the water masers toward the H2O-PN IRAS 18061–2505

  • Yolanda Gómez, Daniel Tafoya, Olga Suárez, Jose F. Gómez, Luis F. Miranda, Guillem Anglada, Jóse M. Torrelles, Roberto Vázquez
  • Journal:
    Proceedings of the International Astronomical Union / Volume 8 / Issue S287 / January 2012
    Published online by Cambridge University Press:
    24 July 2012, pp. 258-259
    Print publication:
    January 2012
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  • It has been suggested that the presence of disks or tori around the central stars of pre Planetary Nebulae and Planetary Nebulae is related to the collimation of the jet that are frequently observed in these sources. These disks or tori can be traced by the maser emission of some molecules such as water. In this work we present Very Large Array (VLA) observations of the water maser emission at 22 GHz toward the PN IRAS 18061–2505, for which the masers appear located on one side of the central star. For comparison with the observations, we present a simple kinematical model of a disk rotating and expanding around the central star. The model matches qualitatively the observations. However, since the masers appear only on one side of the disk, these results are not conclusive.