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The Outflows of Binary AGB Stars

S. Ramstedt ; Wouter Vlemmings (Institutionen för rymd- och geovetenskap, Onsala rymdobservatorium) ; S. Mohamed
4th ALMA Science Conference on Revolution in Astronomy with ALMA: The Third Year, Tokyo, Japan, 8-11 December Vol. 499 (2015), p. 331-334.
[Konferensbidrag, refereegranskat]

The required conditions for stars to evolve into planetary nebulae (PNs) continues to puzzle. Since PNs are found in a wide variety of shapes, processes that could sculpt circumstellar envelopes (CSEs) are being investigated. A binary companion will have a strong gravitational effect, but known binary AGB stars are rare. Using ALMA in Cycle 1 and 2, we have observed a small sample of well-studied, binary AGB stars, covering a decisive range in separation, in order to determine the influence of a companion on the circumstellar morphology of the AGB primary. The first steps toward interpreting and analyzing the data have been taken, and the results will be compared to 3D Smoothed Particle Hydrodynamics (SPH) models of the gravitational interaction.


Denna post skapades 2016-03-02.
CPL Pubid: 232649


Institutioner (Chalmers)

Institutionen för rymd- och geovetenskap, Onsala rymdobservatorium (2010-2017)


Astronomi, astrofysik och kosmologi

Chalmers infrastruktur

Onsala rymdobservatorium