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MUSEing about the SHAPE of eta Car's outer ejecta

Published online by Cambridge University Press:  28 July 2017

A. Mehner ,
W. Steffen ,
J. Groh ,
F. P. A. Vogt ,
D. Baade ,
H. M. J. Boffin ,
W. J. de Wit ,
R. D. Oudmaijer ,
T. Rivinius  and
F. Selman
A. Mehner
Affiliation:
ESO, Alonso de Cordova 3107, Vitacura, Santiago, Chile email: amehner@eso.org
W. Steffen
Affiliation:
Instituto de Astronomía, UNAM, Apdo Postal 106, Ensenada 22800, México
J. Groh
Affiliation:
School of Physics, Trinity College Dublin, Dublin 2, Ireland
F. P. A. Vogt
Affiliation:
ESO, Alonso de Cordova 3107, Vitacura, Santiago, Chile email: amehner@eso.org
D. Baade
Affiliation:
ESO, Karl-Schwarzschild-Straße 2, 85748 Garching, Germany
H. M. J. Boffin
Affiliation:
ESO, Karl-Schwarzschild-Straße 2, 85748 Garching, Germany
W. J. de Wit
Affiliation:
ESO, Alonso de Cordova 3107, Vitacura, Santiago, Chile email: amehner@eso.org
R. D. Oudmaijer
Affiliation:
School of Physics and Astronomy, The University of Leeds, Leeds, LS2 9JT, UK
T. Rivinius
Affiliation:
ESO, Alonso de Cordova 3107, Vitacura, Santiago, Chile email: amehner@eso.org
F. Selman
Affiliation:
ESO, Alonso de Cordova 3107, Vitacura, Santiago, Chile email: amehner@eso.org
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Abstract

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The role of episodic mass loss in evolved massive stars is one of the outstanding questions in stellar evolution theory. Integral field spectroscopy of nebulae around massive stars provide information on their recent mass-loss history. η Car is one of the most massive evolved stars and is surrounded by a complex circumstellar environment. We have conducted a three-dimensional morpho-kinematic analysis of η Car’s ejecta outside its famous Homunculus nebula. SHAPE modelling of VLT MUSE data establish unequivocally the spatial cohesion of the outer ejecta and the correlation of ejecta with the soft X-ray emission.

Keywords

circumstellar mattermass losswindsoutflows
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S329: The Lives and Death-Throes of Massive Stars , November 2016 , pp. 423
Copyright
Copyright © International Astronomical Union 2017