We present new radial velocities and photometry of the short-period Algol TT Herculis. Previous attempts to model the light curves of the system have met with limited success, primarily because of the lack of a reliable mass ratio. Our spectroscopic observations are the first to result in radial velocities for the secondary star, and thus provide a spectroscopic mass ratio. Simultaneous analysis of the radial velocities and new photometry shows that the system is a double contact binary, with a rapidly rotating primary that fills its limiting lobe.
@article{arxiv.1401.3698,
title = {The Double Contact Nature of TT Herculis},
author = {Dirk Terrell and Robert H. Nelson},
journal= {arXiv preprint arXiv:1401.3698},
year = {2015}
}
Comments
6 pages, 5 figures, accepted for publication in the Astrophysical Journal