TY - JOUR
T1 - THE POPULATION of LONG-PERIOD TRANSITING EXOPLANETS
AU - Foreman-Mackey, Daniel
AU - Morton, Timothy D.
AU - Hogg, David W.
AU - Agol, Eric
AU - Schölkopf, Bernhard
N1 - Publisher Copyright:
© 2016. The American Astronomical Society. All rights reserved.
PY - 2016/12
Y1 - 2016/12
N2 - The Kepler mission has discovered thousands of exoplanets and revolutionized our understanding of their population. This large, homogeneous catalog of discoveries has enabled rigorous studies of the occurrence rate of exoplanets and planetary systems as a function of their physical properties. However, transit surveys such as Kepler are most sensitive to planets with orbital periods much shorter than the orbital periods of Jupiter and Saturn, the most massive planets in our solar system. To address this deficiency, we perform a fully automated search for long-period exoplanets with only one or two transits in the archival Kepler light curves. When applied to the ∼40,000 brightest Sun-like target stars, this search produces 16 long-period exoplanet candidates. Of these candidates, six are novel discoveries and five are in systems with inner short-period transiting planets. Since our method involves no human intervention, we empirically characterize the detection efficiency of our search. Based on these results, we measure the average occurrence rate of exoplanets smaller than Jupiter with orbital periods in the range 2-25 years to be 2.0 ±0.7 planets per Sun-like star.
AB - The Kepler mission has discovered thousands of exoplanets and revolutionized our understanding of their population. This large, homogeneous catalog of discoveries has enabled rigorous studies of the occurrence rate of exoplanets and planetary systems as a function of their physical properties. However, transit surveys such as Kepler are most sensitive to planets with orbital periods much shorter than the orbital periods of Jupiter and Saturn, the most massive planets in our solar system. To address this deficiency, we perform a fully automated search for long-period exoplanets with only one or two transits in the archival Kepler light curves. When applied to the ∼40,000 brightest Sun-like target stars, this search produces 16 long-period exoplanet candidates. Of these candidates, six are novel discoveries and five are in systems with inner short-period transiting planets. Since our method involves no human intervention, we empirically characterize the detection efficiency of our search. Based on these results, we measure the average occurrence rate of exoplanets smaller than Jupiter with orbital periods in the range 2-25 years to be 2.0 ±0.7 planets per Sun-like star.
KW - catalogs
KW - methods: data analysis
KW - methods: statistical
KW - planetary systems
KW - stars: statistics
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U2 - 10.3847/0004-6256/152/6/206
DO - 10.3847/0004-6256/152/6/206
M3 - Article
AN - SCOPUS:85009127196
SN - 0004-6256
VL - 152
JO - Astronomical Journal
JF - Astronomical Journal
IS - 6
M1 - 206
ER -