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Kepler-70 System

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Exoplanetary Scratchpad

[SysBP Img]

A hot class B sub-dwarf star (also called KIC 05807616 and KOI 55, 0.5 SM, 0.2 SR, passed through red giant phase 18.4 MYA, will later retract to become a white dwarf) that has completed it expansion phase and retracted. Kepler detected two confirmed planets at epistellar distances that apparently survived the expansion in-tact. The first theory is that these are the cores of two giant planets that survived the expansion and retraction of the star, as terrestrial planets disintegrated. Engulfing planets like these may have hastened the loss of the star's outer layers and may be the only way of producing a star of this type. A newer theory is that these planets could be the remnants of a single gas giant planet that was torn apart into smaller planets during the stars expansion. This planet could have stripped away the outer layers of the star and prevented it from engulfing it. A third candidate planet between the other two could also be a remnant, and more remnants could be found. The planets were not detected using transit, but rather their reflected light may be enhancing the star's brightness, which also varies over time. The planets would have diameters of 76% and 87% that of Earth if they are rocky.

KOI 55 System Web PagesEdit

KOI 55 System In the NewsEdit

Planets May Have Survived Star's Expansion (2011)Edit

Giant Planet May Have Been Split in Two (2012)Edit

See AlsoEdit

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