Abstract
BAT99-129 is a rare, short-period eclipsing Wolf-Rayet binary in the Large Magellanic Cloud. We present here medium-resolution NTT/EMMI spectra that allow us to disentangle the spectra of the two components and find the orbital parameters of the binary. We also present VLT/FORS1 spectra of this binary taken during the secondary eclipse, i.e. when the companion star passes in front of the Wolf-Rayet star. With these data we are able to extract, for the first time in absolute units for a WR+O binary, the sizes of the line emitting regions.
Based on observations obtained at the La Silla and Paranal Observatories, European Southern Observatory (Chile).
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© 2006 Springer Science+Business Media B.V.
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Foellmi, C., Moffat, A.F.J., Marchenko, S.V. (2006). Wind Ionization Structure of the Short-Period Eclipsing LMC Wolf-Rayet Binary BAT99-129: Preliminary Results. In: Giménez, À., Guinan, E., Niarchos, P., Rucinski, S. (eds) Close Binaries in the 21st Century: New Opportunities and Challenges. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-5027-5_20
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DOI: https://doi.org/10.1007/978-1-4020-5027-5_20
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Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-5026-8
Online ISBN: 978-1-4020-5027-5
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