Data Columns in the Kepler Stellar Table

• KIC = the parameters are extracted from the Kepler Input Catalog (Brown et al. 2011). Uncertainties of Teff = 200 K, log(g) = 0.3 dex and [Fe/H] = 0.4.


• J-K = the star is unclassified in the KIC, J-K has been used to estimate temperature. The host star is assumed to be on the ZAMS with corresponding log(g) based on the Schmidt-Kaler relation.


• Pinsonneault = uses a revised T_eff scale from Pinsonneault et al. (2012) with [Fe/H] fixed at -0.2. The quantity log(g) is taken from the KIC. Values are then revised by fitting to Yonsei-Yale stellar evolution models (Yi et al. 2001).


• SPE = Spectroscopy


• PHO = Photometry


• TRA = Transits or Eclipsing Binaries


• AST = Asteroseismology


• Solar = No physical parameters are known for this object and so the pipeline used Solar values. These values were used directly without fitting.

If the letter code is trailed by a number, the number corresponds to a specific paper. That list is available here.

• DSEP = Based on Dartmouth Stellar Evolution Program. DSEP given without a reference number corresponds to values derived with the model grid presented in Huber et al. 2013.


• MULT = Based on multiple evolutionary tracks/isochrones, including DSEP

If the letter code is trailed by a number, the number corresponds to a specific paper. That list is available here.

The Multiple Event Statistic (MES) threshold reports the transit-signal significance level achieved by the transiting planet search (TPS) module.

There is one entry for each of the 14 transit durations (1.5, 2.0, 2.5, 3.0, 3.5, 4.5, 5.0, 6.0, 7.5, 9.0, 10.5, 12.0, 12.5, 15.0 hr) explored by TPS in the transit search.

A value of 7.1 indicates that TPS reached the nominal search threshold significance, whereas a value above 7.1 indicates that TPS ended the search prematurely at the higher specified significance threshold.

The robust root-mean-square (RMS) combined differential photometric precision (CDPP) is an empirical estimate of the noise in the relative flux time series observations. TPS computes a non-stationary time series of CDPP, which sets the significance level of detected transit signals.

The 14 entries are the CDPP time series summary statistics for 14 transit durations (i.e., 1.5, 2.0, 2.5, 3.0, 3.5, 4.5, 5.0, 6.0, 7.5, 9.0, 10.5, 12.0, 12.5, 15.0 hr) searched by TPS. These summary statistics are calculated in a robust fashion by excluding cadences de-weighted during the transit search and employing median and mean absolute deviation algorithms, rather than the less robust arithmetic mean and standard deviation. Specifically, the standard definition of the root mean square deviation of a data set X is Xrms² = Xmean²+Xstd², where Xmean is the arithmetic mean of X and Xstd is the standard deviation of X. For the robust version, the arithmetic mean is replaced with the median and the standard deviation is replaced with the mean absolute deviation (mad) scaled to approximate the standard deviation, so that (Xrobust_rms)² = (Xmedian)² + (1.4826*Xmad)².

The rmsCDPP slope for long transit durations is a linear fit to the log10(transit duration) versus log10(rmsCDPP) values for the six longest transit durations (e.g. 7.5, 9.0, 10.5, 12.0, 12.5, 15.0 hr).

Note: For white Gaussian noise, the rmsCDPP is expected to decrease with increasing transit duration because the noise decreases as the square-root of the number of in-transit cadences. However, targets with astrophysical noise or non-uniform power spectral densities can have rmsCDPP values that actually increase with increasing transit duration. Hence, this rmsCDPP slope serves as an indicator of non-white Gaussian noise behavior on the longest timescales searched. Monte-Carlo transit injection and recovery tests of the Kepler pipeline reveal that targets with large values of this rmsCDPP slope have suppressed transit recovery relative to targets with nominal rmsCDPP slopes.

Timeout indicator values:

• 0 (zero) = the search ended normally after reaching its nominal significance threshold of 7.1;
• 1 = the search ended prematurely, before the 7.1 significance threshold was achieved;
• 2 = no transit search was attempted.