PI: Jason Curtis, Pennsylvania State U., email@example.com
Address: Astronomy Department, 525 Davey Lab, University Park, PA 16802 USA
CoI: Mark Giampapa, National Solar Observatory
Title: Contemporaneous K2 and WIYN/Hydra measurements of stellar rotation and magnetic activity of 3 Gyr Sun-like stars in Ruprecht 147
Abstract: We propose to obtain spectra of magnetic activity diagnostics with WIYN/Hydra for 100 Solar-type stars in the 3 Gyr open cluster, Ruprecht 147. These spectra will be combined with ultra-high precision light curves obtained with the repurposed Kepler mission, K2, in our approved Cycle 2 program (GO 7035). While the fundamental properties of host stars, such as luminosity and effective temperature, determine the boundaries of the Habitable Zone (HZ), variability due to magnetic activity can significantly influence the thermal structure and composition of the atmospheres of exoplanets in the HZ on both short and long time scales. The total data-set will yield insights on the nature of magnetic field-related variability in Sun-like stars at an age when multicellular life first evolved on Earth. Characterization of the conditions of the HZ in old, Sun-like stars where terrestrial-size planets may form and evolve is among the objectives of the NN-EXPLORE program. We will pair this sample with the M67 dataset of similar quality and origin (Program 2015B-0180) to study angular momentum evolution and magnetic activity decay.
Program Type: Standard/NASA WIYN
Run 1 (2016A): WIYN/HYDR -- 7n on Jul 22 - Jul 28 2016
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360