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Issue A&A Volume 429, Number 3, January III 2005 Page(s) 1025 - 1030 Section Stellar structure and evolution DOI 10.1051/0004-6361:20041345

A&A 429, 1025-1030 (2005)
DOI: 10.1051/0004-6361:20041345

Chemical compositions of four B-type supergiants in the SMC wing

J.-K. Lee, W. R. J. Rolleston, P. L. Dufton and R. S. I. Ryans

Department of Pure & Applied Physics, The Queen's University of Belfast, BT7 1NN, Northern Ireland, UK
    e-mail: j.k.lee@qub.ac.uk

(Received 24 May 2004 / Accepted 14 September 2004 )

Abstract
High-resolution UCLES/AAT spectra of four B-type supergiants in the SMC South East Wing have been analysed using non-LTE model atmosphere techniques to determine their atmospheric parameters and chemical compositions. The principle aim of this analysis was to determine whether the very low metal abundances (-1.1 dex compared with Galactic value) previously found in the Magellanic Inter Cloud region (ICR) were also present in the SMC Wing. The chemical compositions of the four targets are similar to those found in other SMC objects and appear to be incompatible with those deduced previously for the ICR. Given the close proximity of the Wing to the ICR, this is difficult to understand and some possible explanations are briefly discussed.

Key words: galaxies: Magellanic Clouds -- stars: abundances -- stars: early-type -- stars: supergiants

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© ESO 2005

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