THE POSSIBLE ORBITAL DECAY and TRANSIT TIMING VARIATIONS of the PLANET WASP-43b

Ing Guey Jiang; Chien Yo Lai; Alexander Savushkin; David Mkrtichian; Kirill Antonyuk; Evgeny Griv; He Feng Hsieh; Li Chin Yeh

doi:10.3847/0004-6256/151/1/17

THE POSSIBLE ORBITAL DECAY and TRANSIT TIMING VARIATIONS of the PLANET WASP-43b

Ing Guey Jiang, Chien Yo Lai, Alexander Savushkin, David Mkrtichian, Kirill Antonyuk, Evgeny Griv, He Feng Hsieh, Li Chin Yeh

Department of Physics

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

Abstract

Motivated by the previously reported high orbital decay rate of the planet WASP-43b, we have obtained and present eight newly transiting light curves. Together with other data in the literature, we perform a self-consistent timing analysis with data covering a timescale of 1849 epochs. The results give an orbital decay rate = -0.02890795 ± 0.00772547 s year^-1, which is one order smaller than previous values. This slow decay rate corresponds to a normally assumed theoretical value of the stellar tidal dissipation factor. In addition, through the frequency analysis, the transit timing variations presented here are unlikely to be periodic, but could be signals of a slow orbital decay.

Original language	English
Article number	17
Journal	Astronomical Journal
Volume	151
Issue number	1
DOIs	https://doi.org/10.3847/0004-6256/151/1/17
State	Published - 1 Jan 2016

Keywords

planetary systems
techniques: photometric

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.3847/0004-6256/151/1/17

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T1 - THE POSSIBLE ORBITAL DECAY and TRANSIT TIMING VARIATIONS of the PLANET WASP-43b

AU - Jiang, Ing Guey

AU - Lai, Chien Yo

AU - Savushkin, Alexander

AU - Mkrtichian, David

AU - Antonyuk, Kirill

AU - Griv, Evgeny

AU - Hsieh, He Feng

AU - Yeh, Li Chin

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Y1 - 2016/1/1

N2 - Motivated by the previously reported high orbital decay rate of the planet WASP-43b, we have obtained and present eight newly transiting light curves. Together with other data in the literature, we perform a self-consistent timing analysis with data covering a timescale of 1849 epochs. The results give an orbital decay rate = -0.02890795 ± 0.00772547 s year-1, which is one order smaller than previous values. This slow decay rate corresponds to a normally assumed theoretical value of the stellar tidal dissipation factor. In addition, through the frequency analysis, the transit timing variations presented here are unlikely to be periodic, but could be signals of a slow orbital decay.

AB - Motivated by the previously reported high orbital decay rate of the planet WASP-43b, we have obtained and present eight newly transiting light curves. Together with other data in the literature, we perform a self-consistent timing analysis with data covering a timescale of 1849 epochs. The results give an orbital decay rate = -0.02890795 ± 0.00772547 s year-1, which is one order smaller than previous values. This slow decay rate corresponds to a normally assumed theoretical value of the stellar tidal dissipation factor. In addition, through the frequency analysis, the transit timing variations presented here are unlikely to be periodic, but could be signals of a slow orbital decay.

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THE POSSIBLE ORBITAL DECAY and TRANSIT TIMING VARIATIONS of the PLANET WASP-43b

Abstract

Keywords

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