TRANSIT TIMING OBSERVATIONS FROM KEPLER. VIII. CATALOG OF TRANSIT TIMING MEASUREMENTS OF THE FIRST TWELVE QUARTERS

By T. Mazeh, G. Nachmani, T. Holczer, D. Fabrycky, Eric B. Ford, Roberto Sanchis-Ojeda, G. Sokol, J. Rowe, S. Zucker, E. Agol and 6 more. 2013

132 citations recorded by the source corpus.

Following the works of Ford et al. and Steffen et al. we derived the transit timing of 1960 Kepler objects of interest (KOIs) using the pre-search data conditioning light curves of the first twelve quarters of the Kepler data. For 721 KOIs with large enough signal-to-noise ratios, we obtained also the duration and depth of each transit. The results are presented as a catalog for the community to use. We derived a few statistics of our results that could be used to indicate significant variations. Including systems found by previous works, we have found 130 KOIs that showed highly significant times of transit variations (TTVs) and 13 that had short-period TTV modulations with small amplitudes. We consider two effects that could cause apparent periodic TTV—the finite sampling of the observations and the interference with the stellar activity, stellar spots in particular. We briefly discuss some statistical aspects of our detected TTVs. We show that the TTV period is correlated with the orbital period of the planet and with the TTV amplitude.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/9d6990c89fcce393a7d15ea591edfb96bc95c442

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In Astronomy and Astrophysics

1. Y. Lithwick
2. S. Hadden
3. D. Fabrycky
4. Suzanne Aigrain
5. Yanqin Wu
6. T. Mazeh
7. Eric B. Ford
8. Timothy Morton

In Instrumentation

1. Y. Lithwick
2. S. Hadden
3. Suzanne Aigrain
4. A. McQuillan
5. T. Mazeh
6. N. Murray
7. D. Fabrycky
8. Eric B. Ford

Citations in the corpus

• DENSITIES AND ECCENTRICITIES OF 139 KEPLER PLANETS FROM TRANSIT TIME VARIATIONS (2013, methodology): “E P] 8 A pr 2 01 4 2 In this paper, we first extract the amplitudes (V and V ′) of 139 Kepler planet candidates from the transit times up to Quarter 12 published in Mazeh et al. (2013).”
• PROBABILISTIC MASS–RADIUS RELATIONSHIP FOR SUB-NEPTUNE-SIZED PLANETS (2015, background): “…Habitable Worlds, and Department of Astronomy and Astrophysics, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA 16802, USA 6 Center for Astrostatistics, 417 Thomas Building, The Pennsylvania State University, University Park, PA 16802, USA ratios (Mazeh et al. 2013).”
• TRANSIT TIMING OBSERVATIONS FROM KEPLER. IX. CATALOG OF THE FULL LONG-CADENCE DATA SET (2016, methodology): “The transit time uncertainty was approximated to be (100 minutes)/(SNR of individual transit) (Mazeh et al. 2013, see also Figure 2).”
• TESTING IN SITU ASSEMBLY WITH THE KEPLER PLANET CANDIDATE SAMPLE (2013, background): “A better comparison may be possible soon as Mazeh et al. (2013) promise that an improved catalog will be shortly forthcoming, based on a longer baseline of data.”
• STELLAR ROTATION PERIODS OF THE KEPLER OBJECTS OF INTEREST: A DEARTH OF CLOSE-IN PLANETS AROUND FAST ROTATORS (2013, background): “A literature search and additional tests allowed us to exclude a further 23 targets from our sample: 17 targets were listed as confirmed or likely eclipsing binaries (EB, flag: ‘E’) (Santerne et al. 2012; Cabrera et al. 2012; Muirhead et al. 2013; Mazeh et al. 2013).”