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Exoplanet-Science.com

TTVs are derived from Q1-Q16 Kepler data.  x-axes: “Observed Tc” (Mid-Transit Time): EXOFAST’s best-fits from Kepler light flux vs. time data.  y-axes: “(O – C)”: difference between Observed Tc and the Calculated Tc from the graphically obtained linear ephemeris.  The plots are pictured in the order of orbital periods.

Discussion:
The observed sinusoidal TTV and closely-matching Lomb-Scargle periodicity (LSP) for KOI-3014.01 (268.42 and 268.78 days, respectively) suggests the presence of another unseen (non-transiting) exoplanet in this system.
Further, the observed sinusoidal fit and additional closely-matching LSP of the RESIDUALS from the above TTV plot (604.99 and 598.53 days, respectively) suggests a second unseen planet.


1st: KOI-3014.01 TTV, P = 86.11 days [Plot error bars = ± 11.19 min.]
TTV_minimum: 421.93 ± 34.41 days, Amp_ttv_minimum: -27.68 ± 9.10 min.
TTV_maximum: 556.14 ± 36.39 days, Amp_ttv_maximum: 27.57 ± 9.10 min.
TTV_minimum: 690.35 ± 38.77 days, Amp_ttv_minimum: -27.68 ± 9.10 min.
TTV_maximum: 824.56 ± 41.48 days, Amp_ttv_maximum: 27.57 ± 9.10 min.
TTV_minimum: 958.77 ± 44.45 days, Amp_ttv_minimum: -27.68 ± 9.10 min.
TTV_maximum: 1092.97 ± 47.65 days, Amp_ttv_maximum: 27.57 ± 9.10 min.
TTV_minimum: 1227.18 ± 51.02 days, Amp_ttv_minimum: -27.68 ± 9.10 min.
TTV_maximum: 1361.39 ± 54.54 days, Amp_ttv_maximum: 27.57 ± 9.10 min.
P_ttv: 268.42 ± 8.78 days.
Amp_ttv: 55.25 ± 12.87 minutes.
Lomb-Scargle periodogram, candidate P_ttv: 268.78 days; Power: 3.79; P-value: 0.0401.
Linear ephemeris (this work): Tc = 86.11463145(Tc#) + 67.89271689


2nd: KOI-3014.01 RESIDUALS of TTV, [Plot error bars = ± 14.41 min.]

TTV_minimum: 612.05 ± 48.43 days, Amp_ttv_minimum: -18.53 ± 5.68 min.
TTV_maximum: 914.54 ± 72.37 days, Amp_ttv_maximum: 18.66 ± 5.68 min.
TTV_minimum: 1217.04 ± 96.31 days, Amp_ttv_minimum: -18.53 ± 5.68 min.
P_ttv: 604.99 ± 44.79 days.
Amp_ttv: 37.19 ± 8.03 minutes.
Lomb-Scargle periodogram, candidate P_ttv: 598.53 days; Power: 4.12; P-value: 0.0236.


26 Oct 2013
Kepler KOI-3014.01 (KIC-7347246) 2-(or 3, or more?)-Planet System