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.

astrometry

techniques: Interferometric

masers

stars: AGB and post-AGB

Författare

G. Orosz

Joint Institute for VLBI in Europe (JIVE)

Kagoshima University

J. F. Gomez

CSIC - Instituto de Astrofísica de Andalucía (IAA)

Daniel Tafoya

Galaktisk astrofysik

Chalmers, Rymd- och geovetenskap, Onsala rymdobservatorium

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

Mer information

Senast uppdaterat

2019-12-02