Sign on
ADS Classic is now deprecated. It will be completely retired in October 2019. This page will automatically redirect to the new ADS interface at that point.

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic On-line Article (HTML)
· Table of Contents
· References in the Article
· Also-Read Articles (Reads History)
· Translate This Page
A detailed study toward the Water fountain IRAS 15445-5449
Pérez-Sánchez, Andrés F.; López, Rebeca García; Vlemmings, Wouter; Tafoya, Daniel
AA(European Souther Observatory, Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago de Chile ), AB(Dublin Institute for Advance Studies, 31 Fitzwilliam Place, Dublin 2, Ireland), AC(Department of Space, Earth and Environment, Chalmers University of technology, Onsala Space Obsevatory, 439 92 Onsala, Sweden.), AD(Department of Space, Earth and Environment, Chalmers University of technology, Onsala Space Obsevatory, 439 92 Onsala, Sweden.)
Astrophysical Masers: Unlocking the Mysteries of the Universe, Proceedings of the International Astronomical Union, IAU Symposium, Volume 336, pp. 355-358
Publication Date:
stars: AGB and Post-AGB, Masers, stars: late-type
Abstract Copyright:
(c) 2018: Copyright © International Astronomical Union 2018
Bibliographic Code:


Post-Asymptotic giant branch (post-ABG) sources with high-velocity spectral features of H2O maser emission detected toward their circumstellar envelopes (CSEs) are known as Water Fountain (WF) nebulae. These are low- or intermediate-mass Galactic stellar sources that are undergoing the late stages of an intense mass-loss process. The velocity and the spatial distribution of the H2O maser spectral features can provide information about the kinematics of the molecular gas component of their CSEs. Hence, observational studies toward WF nebulae could help to better understand the formation of the asymmetric structures (hundred to thousand AUs) commonly seen toward Planetary nebulae (PNe). Here we present preliminary results of observations done toward the WF IRAS 15445-5449 using the Australia Telescope Compact Array (ATCA) and the Very Large Telescope (SINFONI/VLT). Assuming that the pumping of the H2O maser transitions is a consequence of shocks between different velocity winds, the spatial distribution of the emission shed light on the scales of the regions affected by the propagation of the shock-fronts.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)

Find Similar Abstracts:

Use: Authors
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
arXiv e-prints