Velocity monitoring of sequence-E red giants.
Abstract
We are currently monitoring radial velocities of LMC red giants from sequences 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. These 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.
- Publication:
-
Memorie della Societa Astronomica Italiana
- Pub Date:
- 2006
- Bibcode:
- 2006MmSAI..77..537A
- Keywords:
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- Stars: binaries: close;
- Stars: late-type;
- Stars: variable