We present the results of our Hubble Space Telescope program and describe how our analysis methods were used to re-evaluate the habitability of some of the most interesting Kepler planet candidates .
Our program observed 22 Kepler Object of Interest ( KOI ) host stars , several of which were found to be multiple star systems unresolved by Kepler .
We use our high-resolution imaging to spatially resolve the stellar multiplicity of Kepler -296 , KOI-2626 , and KOI-3049 , and develop a conversion to the Kepler photometry ( Kp ) from the F555W and F775W filters on WFC3/UVIS .
The binary system Kepler -296 ( 5 planets ) has a projected separation of 0 \farcs 217 ( 80 AU ) ; KOI-2626 ( 1 planet candidate ) is a triple star system with a projected separation of 0 \farcs 201 ( 70 AU ) between the primary and secondary components and 0 \farcs 161 ( 55 AU ) between the primary and tertiary ; and the binary system KOI-3049 ( 1 planet candidate ) has a projected separation of 0 \farcs 464 ( 225 AU ) .
We use our measured photometry to fit the separated stellar components to the latest Victoria-Regina Stellar Models with synthetic photometry to conclude that the systems are coeval .
The components of the three systems range from mid-K dwarf to mid-M dwarf spectral types.We solved for the planetary properties of each system analytically and via an MCMC algorithm using our independent stellar parameters .
The planets range from { \sim { 1.6 } { R _ { \oplus } } to \sim 4.2 { R _ { \oplus } } } , mostly Super Earths and mini-Neptunes .
As a result of the stellar multiplicity , some planets previously in the Habitable Zone are , in fact , not , and other planets may be habitable depending on their assumed stellar host .