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E.A.K. Adams (Indiana University), P.R. Wood (Research School of Astronomy and Astrophysics, Australian National University), M.-R. Cioni (Institute for Astronomy, University of Edinburgh)
We are currently monitoring radial velocities of LMC red giants from sequence D and E of Wood et al. (1999). The spectra are being obtained with the FLAMES/GIRAFFE instrument on the VLT. Here, some preliminary velocity curves for several sequence E stars are presented. Originally thought to be contact binaries, the stars appear to be Roche lobe filling red giants in binary systems. Preliminary light curve modelling suggests very low masses for the red giants, which may be post-common envelope objects.
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Bulletin of the American Astronomical Society, 37 #4
© 2005. The American Astronomical Soceity.