We present our first results for a sample of southern high-amplitude delta Scuti stars (HADS), based on a spectrophotometric survey started in 2003. For CY Aqr and AD CMi, we found very stable light and radial velocity curves; we confirmed the double-mode nature of ZZ Mic, BQ Ind and RY Lep. Finally, we detected gamma-velocity changes in RS Gru and RY Lep
@article{arxiv.astro-ph/0509485,
title = {Binarity and multiperiodicity in high-amplitude delta Scuti stars},
author = {A. Derekas and L. L. Kiss and B. Csak and J. Griffin and C. Lindstrom and Sz. Meszaros and P. Szekely and M. C. B. Ashley and T. R. Bedding},
journal= {arXiv preprint arXiv:astro-ph/0509485},
year = {2010}
}
Comments
2 pages, conference proceedings, Workshop on Stellar Pulsation and Evolution, Rome, June 2005