Determining the Ages of Nearby A-Stars with Long-Baseline Interferometry
We determine the age of 7 stars in the Ursa Major moving group using a novel method that models the fundamental parameters of rapidly rotating A-stars based on interferometric observations and literature photometry and compares these parameters (namely, radius, luminosity, and rotation velocity) with evolution models that account for rotation. We find these stars to be coeval, thus providing an age estimate for the moving group and validating this technique. With this technique validated, we determine the age of the rapidly rotating, directly imaged planet host star, κ Andromedae.
Publication Source (Journal or Book title)
Proceedings of the International Astronomical Union
Jones, J., White, R., Boyajian, T., Schaefer, G., Baines, E., Ireland, M., & Patience, J. (2015). Determining the Ages of Nearby A-Stars with Long-Baseline Interferometry. Proceedings of the International Astronomical Union, 10, 119-120. https://doi.org/10.1017/S1743921315006171