Spitzer Observations of Exoplanets Discovered with The Kepler K2 Mission

TL;DR

This study uses the Spitzer Space Telescope to observe and refine the parameters of exoplanets discovered by the Kepler K2 mission, providing more precise data for future research.

Contribution

It presents new Spitzer observations that confirm and refine the orbital and physical parameters of exoplanets in two K2 systems, enhancing the accuracy of planetary data.

Findings

Refined orbital and physical parameters of four exoplanets.

Evidence for a possible Transit Timing Variation in K2-3b.

Improved data quality for future K2 target observations.

Abstract

We have used the {\it Spitzer Space Telescope} to observe two transiting planetary systems orbiting low mass stars discovered in the \Kepler \Ktwo mission. The system K2-3 (EPIC 201367065) hosts three planets while EPIC 202083828 (K2-26) hosts a single planet. Observations of all four objects in these two systems confirm and refine the orbital and physical parameters of the planets. The refined orbital information and more precise planet radii possible with \Spitzer will be critical for future observations of these and other \Ktwo targets. For K2-3b we find marginally significant evidence for a Transit Timing Variation between the \Ktwo and \Spitzer\ epochs.