Examining each Kepler system individually considering multiple avenues (isochrone mapping, contrast curves, probability of being bound), we suggest two cases for which the techniques most likely agree in their companion detections (detect the same companion star). (arxiv.org)
We compare these values to model stellar isochrones to constrain the stellar mass to be M * = 1.22 + / - 0.17 Msun. (arxiv.org)
With a metallicity around 1.12 Sol's and higher chromospheric activity than Sol the star appears to be 2.5 + / -1.8 billion years old — probably younger than Sol's 4.6 billion years (press release), and one analysis of isochrones suggests that the star may only be 2.0 billion years old (Crepp et al, 2012); and Guinan et al, 1999). (solstation.com)