Precision closure phase measurements obtained with ground-based long baseline optical interferometers is a promising way to directly detect light from nearby hot Jupiters. Here we present our closure phase simulations for the CHARA array for several bright hot Jupiters, υ And b, 51 Peg b, and τ Boo b. The maximum possible closure phase signals from these hot Jupiters are very small, for example, only xs223C0.17 degrees for υ And b, requiring very high precision and stable closure phase measurements. We present preliminary results of a closure phase study on test object β Tau and hot Jupiter system υ And, both obtained with the MIRC instrument at the CHARA array. We demonstrate that directly detecting the light from hot Jupiters is feasible using high precision closure phase measurements obtained by CHARA-MIRC along with its sub-milli-arcsecond resolution, although challenges remain.
|Title of host publication||Proceedings of the International Astronomical Union |
|Subtitle of host publication||Symposium S249 (Exoplanets: Detection, Formation and Dynamics) - October 2007|
|Editors||Y.-S. Sun, S. Ferraz-Mello, J.-L. Zhou|
|Number of pages||7|
|Publication status||Published - 12 May 2008|
- techniques: interferometry, techniques: high angular resolution, exoplanets: hot Jupiters: \upsi And b, 51 Peg b, $ Boo b