Bow shocks in water fountain jets
Paper i proceeding, 2017
We briefly introduce the VLBI maser astrometric analysis of IRAS 18043-2116 and IRAS 18113-2503, two remarkable and unusual water fountains with spectacular bipolar bow shocks in their high-speed collimated jet-driven outflows. The 22 GHz H2O maser structures and velocities clearly show that the jets are formed in very short-lived, episodic outbursts, which may indicate episodic accretion in an underlying binary system.
masers
techniques: Interferometric
stars: AGB and post-AGB
astrometry
Författare
G. Orosz
Kagoshima University
Joint Institute for VLBI in Europe (JIVE)
J. F. Gomez
Instituto de Astrofisica de Andalucía (IAA)
Daniel Tafoya
Chalmers, Rymd- och geovetenskap, Onsala rymdobservatorium
Galaktisk astrofysik
H. Imai
Kagoshima University
J. M. Torrelles
Institut d'Estudis Espacials de Catalunya (IEEC)
Ann Njeri Ngendo
University of Nairobi
R. A. Burns
Joint Institute for VLBI in Europe (JIVE)
Kagoshima University
Proceedings of the International Astronomical Union
1743-9213 (ISSN) 1743-9221 (eISSN)
Vol. 13 S336 351-354
IAU Symposium No.336, 2017
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Ämneskategorier
Globaliseringsstudier
Astronomi, astrofysik och kosmologi
Oceanografi, hydrologi, vattenresurser
Infrastruktur
Onsala rymdobservatorium
DOI
10.1017/S1743921317009589