Unexpectedly large mass loss during the thermal pulse cycle of the red giant star R Sculptoris

M. Maercker (), S. Mohamed, W. H. T. Vlemmings, S. Ramstedt, M. A. T. Groenewegen, E. Humphreys, F. Kerschbaum, M. Lindqvist, H. Olofsson, C. Paladini, M. Wittkowski, I. de Gregorio-Monsalvo and L.-A. Nyman
Additional contact information
M. Maercker: European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching, Germany
S. Mohamed: South African Astronomical Observatory, PO Box 9, Observatory 7935, Cape Town, Western Cape, South Africa
W. H. T. Vlemmings: Onsala Space Observatory, Chalmers University of Technology
S. Ramstedt: Argelander Institute for Astronomy, University of Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
M. A. T. Groenewegen: Royal Observatory of Belgium
E. Humphreys: European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching, Germany
F. Kerschbaum: University of Vienna, Türkenschanzstrasse 17, 1180 Wien, Austria
M. Lindqvist: Onsala Space Observatory, Chalmers University of Technology
H. Olofsson: Onsala Space Observatory, Chalmers University of Technology
C. Paladini: University of Vienna, Türkenschanzstrasse 17, 1180 Wien, Austria
M. Wittkowski: European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching, Germany
I. de Gregorio-Monsalvo: Joint ALMA Observatory, Alonso de Córdova 3107, Vitacura, Santiago, Chile
L.-A. Nyman: Joint ALMA Observatory, Alonso de Córdova 3107, Vitacura, Santiago, Chile

Nature, 2012, vol. 490, issue 7419, 232-234

Abstract: A thin, spherical shell with a clumpy structure around the red giant star R Sculptoris is shown to contain a spiral structure, implying that the star is a binary system that underwent a thermal pulse 1,800 years ago, ejecting three times more mass than expected

Date: 2012
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DOI: 10.1038/nature11511

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