Transit Timing Observations from Kepler: VI. Potentially interesting candidate systems from Fourier-based statistical tests

TL;DR

This paper analyzes Kepler transit timing data using Fourier-based statistical tests to identify systems with interesting transit timing variations, aiding in planet confirmation and mass measurement.

Contribution

It introduces Fourier-based statistical tests for detecting transit timing variations in Kepler data, highlighting promising systems for further study.

Findings

Identified several systems with significant TTVs.

Strong TTV signals can confirm planets and measure their masses.

Many systems are suitable for detailed TTV analysis.

Abstract

We analyze the deviations of transit times from a linear ephemeris for the Kepler Objects of Interest (KOI) through Quarter six (Q6) of science data. We conduct two statistical tests for all KOIs and a related statistical test for all pairs of KOIs in multi-transiting systems. These tests identify several systems which show potentially interesting transit timing variations (TTVs). Strong TTV systems have been valuable for the confirmation of planets and their mass measurements. Many of the systems identified in this study should prove fruitful for detailed TTV studies.