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NASA Ames Research Center


See Discovery paper - - Megan E. Schwamb et al.
Planet Hunters: A Transiting Circumbinary Planet in a Quadruple Star System.
Astrophysical Journal, version: March 27, 2013.

See also related Kepler news item and Planet Hunters blog entry.

Kepler-64 Light Curves

Kepler-64b light curve as viewed in Planet Hunters interface
Fig. 1.— Planetary transits in addition to binary-star eclipses identified by Planet Hunters volunteers in KIC 4862625 as viewed in the Planet Hunters interface.
Kepler light curve for PH1b, Kepler-64b, KIC 4862625
Fig. 2.— Reduced Kepler light curve for KIC 4862625 for Quarters 1-11 used to measure stellar eclipse timing variations, timing offsets of the planet transits, and changes in planet transit duration described in Section 3. Top: Full light curve for KIC 4862625 including stellar eclipse and planet transits. The colors plotted (on the online version) are used to separate the different Kepler Quarters. Bottom: Isolated individual identified transits of the planet across star Aa. In Quarter 4 (Q4), the planet transit occurs just before a primary eclipse.
photometric-dynamical model for Kepler-64b
Fig. 12.— Best-fitting EB-fixed photometric-dynamical model ( solid line -red in the online version) and reduced Kepler light curve isolated for the planet transits. Fit residuals for the model compared to the light curve data are also shown below each transit plot. In Quarter 4 (Q4) , the planet transit occurs just before a primary eclipse.