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Issue A&A
Volume 393, Number 2, October II 2002
Page(s) 503 - 510
Section Formation, structure and evolution of stars
DOI http://dx.doi.org/10.1051/0004-6361:20021047



A&A 393, 503-510 (2002)
DOI: 10.1051/0004-6361:20021047

Outflow from and asymmetries in the nebula around the LBV candidate Sk-69 ${^\circ}$279

K. Weis1, 2 and W. J. Duschl1, 2

1  Institut für Theoretische Astrophysik, Tiergartenstr. 15, 69121 Heidelberg, Germany
2  Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany

(Received 11 May 2000 / Accepted 27 June 2002 )

Abstract
We present and discuss new long-slit Echelle spectra of the LMC LBV candidate Sk $-69^\circ279$ and put them in context with previous images and spectra. While at first glance it resembles a simple spherically expanding symmetric shell, we find a considerably more complex morphology and kinematics. The spectra indicate that morphologically identified deviations from sphericity are outflows of faster material out of the main body of Sk $-69^\circ279$. The morphological as well as the kinematic similarity with other LBV nebulae makes it likely that Sk $-69^\circ279$ is an LBV candidate and poses the question: in how far are outflows out of expanding LBV nebulae a general property of such nebulae - at least during some phases of their evolutions.


Key words: stars: evolution -- stars: individual: Sk $-69^\circ279$  -- stars: mass-loss -- ISM: bubbles -- ISM: jets and outflows

Offprint request: K. Weis, kweis@mpifr-bonn.mpg.de

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