# Seeing Double with K2: Testing Re-inflation with Two Remarkably Similar Planets around Red Giant Branch Stars

@article{Grunblatt2017SeeingDW,
title={Seeing Double with K2: Testing Re-inflation with Two Remarkably Similar Planets around Red Giant Branch Stars},
author={Samuel K. Grunblatt and Daniel Huber and Eric Gaidos and Eric D. Lopez and Andrew W. Howard and Howard T. Isaacson and Evan Sinukoff and Andrew M. Vanderburg and Larissa A. Nofi and Jie Yu and Thomas S. H. North and William J. Chaplin and Daniel Foreman-Mackey and Erik A. Petigura and Megan C. Ansdell and Lauren M. Weiss and Benjamin J. Fulton and Douglas N. C. Lin},
journal={The Astronomical Journal},
year={2017},
volume={154},
pages={254}
}
Despite more than 20 years since the discovery of the first gas giant planet with an anomalously large radius, the mechanism for planet inflation remains unknown. Here, we report the discovery of K2-132b, an inflated gas giant planet found with the NASA K2 Mission, and a revised mass for another inflated planet, K2-97b. These planets orbit on ≈9 day orbits around host stars that recently evolved into red giants. We constrain the irradiation history of these planets using models constrained by… Expand

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