Kepler-730: A Hot Jupiter System with a Close-in, Transiting, Earth-sized Planet

Caleb I. Canas; Songhu Wang; Suvrath Mahadevan; Chad F. Bender; Nathan De Lee; Scott W. Fleming; D. A. Garcia-Hernández; Fred R. Hearty; Steven R. Majewski; Alexandre Roman-Lopes; Donald P. Schneider; Keivan G. Stassun

doi:10.3847/2041-8213/aafa1e

Kepler-730: A Hot Jupiter System with a Close-in, Transiting, Earth-sized Planet

Caleb I. Canas, Songhu Wang, Suvrath Mahadevan, Chad F. Bender, Nathan De Lee, Scott W. Fleming, D. A. Garcia-Hernández, Fred R. Hearty, Steven R. Majewski, Alexandre Roman-Lopes, Donald P. Schneider, Keivan G. Stassun

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39 Scopus citations

Abstract

Kepler-730 is a planetary system hosting a statistically validated hot Jupiter in a 6.49 day orbit and an additional transiting candidate in a 2.85 day orbit. We use spectroscopic radial velocities from the APOGEE-2N instrument, Robo-AO contrast curves, and Gaia distance estimates to statistically validate the planetary nature of the additional Earth-sized candidate. We perform astrophysical false positive probability calculations for the candidate using the available Kepler data and bolster the statistical validation using radial velocity data to exclude a family of possible binary star solutions. Using a radius estimate for the primary star derived from stellar models, we compute radii of and () for Kepler-730b and Kepler-730c, respectively. Kepler-730 is only the second compact system hosting a hot Jupiter with an inner, transiting planet.

Original language	English (US)
Article number	L17
Journal	Astrophysical Journal Letters
Volume	870
Issue number	2
DOIs	https://doi.org/10.3847/2041-8213/aafa1e
State	Published - Jan 10 2019

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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Canas, C. I., Wang, S., Mahadevan, S., Bender, C. F., De Lee, N., Fleming, S. W., Garcia-Hernández, D. A., Hearty, F. R., Majewski, S. R., Roman-Lopes, A., Schneider, D. P., & Stassun, K. G. (2019). Kepler-730: A Hot Jupiter System with a Close-in, Transiting, Earth-sized Planet. Astrophysical Journal Letters, 870(2), Article L17. https://doi.org/10.3847/2041-8213/aafa1e

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title = "Kepler-730: A Hot Jupiter System with a Close-in, Transiting, Earth-sized Planet",

abstract = "Kepler-730 is a planetary system hosting a statistically validated hot Jupiter in a 6.49 day orbit and an additional transiting candidate in a 2.85 day orbit. We use spectroscopic radial velocities from the APOGEE-2N instrument, Robo-AO contrast curves, and Gaia distance estimates to statistically validate the planetary nature of the additional Earth-sized candidate. We perform astrophysical false positive probability calculations for the candidate using the available Kepler data and bolster the statistical validation using radial velocity data to exclude a family of possible binary star solutions. Using a radius estimate for the primary star derived from stellar models, we compute radii of and () for Kepler-730b and Kepler-730c, respectively. Kepler-730 is only the second compact system hosting a hot Jupiter with an inner, transiting planet.",

author = "Canas, {Caleb I.} and Songhu Wang and Suvrath Mahadevan and Bender, {Chad F.} and {De Lee}, Nathan and Fleming, {Scott W.} and Garcia-Hern{\'a}ndez, {D. A.} and Hearty, {Fred R.} and Majewski, {Steven R.} and Alexandre Roman-Lopes and Schneider, {Donald P.} and Stassun, {Keivan G.}",

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T2 - A Hot Jupiter System with a Close-in, Transiting, Earth-sized Planet

AU - Canas, Caleb I.

AU - Wang, Songhu

AU - Mahadevan, Suvrath

AU - Bender, Chad F.

AU - De Lee, Nathan

AU - Fleming, Scott W.

AU - Garcia-Hernández, D. A.

AU - Hearty, Fred R.

AU - Majewski, Steven R.

AU - Roman-Lopes, Alexandre

AU - Schneider, Donald P.

AU - Stassun, Keivan G.

PY - 2019/1/10

Y1 - 2019/1/10

N2 - Kepler-730 is a planetary system hosting a statistically validated hot Jupiter in a 6.49 day orbit and an additional transiting candidate in a 2.85 day orbit. We use spectroscopic radial velocities from the APOGEE-2N instrument, Robo-AO contrast curves, and Gaia distance estimates to statistically validate the planetary nature of the additional Earth-sized candidate. We perform astrophysical false positive probability calculations for the candidate using the available Kepler data and bolster the statistical validation using radial velocity data to exclude a family of possible binary star solutions. Using a radius estimate for the primary star derived from stellar models, we compute radii of and () for Kepler-730b and Kepler-730c, respectively. Kepler-730 is only the second compact system hosting a hot Jupiter with an inner, transiting planet.

AB - Kepler-730 is a planetary system hosting a statistically validated hot Jupiter in a 6.49 day orbit and an additional transiting candidate in a 2.85 day orbit. We use spectroscopic radial velocities from the APOGEE-2N instrument, Robo-AO contrast curves, and Gaia distance estimates to statistically validate the planetary nature of the additional Earth-sized candidate. We perform astrophysical false positive probability calculations for the candidate using the available Kepler data and bolster the statistical validation using radial velocity data to exclude a family of possible binary star solutions. Using a radius estimate for the primary star derived from stellar models, we compute radii of and () for Kepler-730b and Kepler-730c, respectively. Kepler-730 is only the second compact system hosting a hot Jupiter with an inner, transiting planet.

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JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

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ER -

Kepler-730: A Hot Jupiter System with a Close-in, Transiting, Earth-sized Planet

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