Astronomers discover two new inflated 'hot Jupiters'
http://phys.org/news/2016-09-astronomers-inflated-hot-jupiters.html
An international team of astronomers led by Joel Hartman of Princeton University has detected two new "hot Jupiter" exoplanets, less massive than our
solar system's biggest planet, but with a radius larger than they should have. The findings are reported in a paper published Sept. 9 on arXiv.org.
The newly found exoworlds, designated HAT-P-65b and HAT-P-66b, were classified as "hot Jupiters" as they are gas giant planets similar in characteristics
to Jupiter, with orbital periods of less than 10 days. They have high surface temperatures as they orbit their host stars very closely. However, the new
alien worlds are much larger in diameter than expected, which led astronomers to conclude that these planets must have undergone an inflation process.
HAT-P-65b and HAT-P-66b were detected by the Hungarian-made Automated Telescope Network (HATNet). The team also conducted follow-up spectrographic and
photometric observations to determine physical characteristics of these planets.