KEPLER-1647B: The LARGEST and LONGEST-PERIOD KEPLER TRANSITING CIRCUMBINARY PLANET

Veselin B. Kostov; Jerome A. Orosz; William F. Welsh; Laurance R. Doyle; Daniel C. Fabrycky; Nader Haghighipour; Billy Quarles; Donald R. Short; William D. Cochran; Michael Endl; Eric B. Ford; Joao Gregorio; Tobias C. Hinse; Howard Isaacson; Jon M. Jenkins; Eric L.N. Jensen; Stephen Kane; Ilya Kull; David W. Latham; Jack J. Lissauer; Geoffrey W. Marcy; Tsevi Mazeh; Tobias W.A. Müller; Joshua Pepper; Samuel N. Quinn; Darin Ragozzine; Avi Shporer; Jason H. Steffen; Guillermo Torres; Gur Windmiller; William J. Borucki

doi:10.3847/0004-637X/827/1/86

KEPLER-1647B: The LARGEST and LONGEST-PERIOD KEPLER TRANSITING CIRCUMBINARY PLANET

Veselin B. Kostov, Jerome A. Orosz, William F. Welsh, Laurance R. Doyle, Daniel C. Fabrycky, Nader Haghighipour, Billy Quarles, Donald R. Short, William D. Cochran, Michael Endl, Eric B. Ford, Joao Gregorio, Tobias C. Hinse, Howard Isaacson, Jon M. Jenkins, Eric L.N. Jensen, Stephen Kane, Ilya Kull, David W. Latham, Jack J. LissauerGeoffrey W. Marcy, Tsevi Mazeh, Tobias W.A. Müller, Joshua Pepper, Samuel N. Quinn, Darin Ragozzine, Avi Shporer, Jason H. Steffen, Guillermo Torres, Gur Windmiller, William J. Borucki

School of Physics and Astronomy

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104 Scopus citations

Abstract

We report the discovery of a new Kepler transiting circumbinary planet (CBP). This latest addition to the still-small family of CBPs defies the current trend of known short-period planets orbiting near the stability limit of binary stars. Unlike the previous discoveries, the planet revolving around the eclipsing binary system Kepler-1647 has a very long orbital period (∼1100 days) and was at conjunction only twice during the Kepler mission lifetime. Due to the singular configuration of the system, Kepler-1647b is not only the longest-period transiting CBP at the time of writing, but also one of the longest-period transiting planets. With a radius of 1.06 ± 0.01 R _Jup, it is also the largest CBP to date. The planet produced three transits in the light curve of Kepler-1647 (one of them during an eclipse, creating a syzygy) and measurably perturbed the times of the stellar eclipses, allowing us to measure its mass, 1.52 ± 0.65 M _Jup. The planet revolves around an 11-day period eclipsing binary consisting of two solar-mass stars on a slightly inclined, mildly eccentric (e _bin = 0.16), spin-synchronized orbit. Despite having an orbital period three times longer than Earth's, Kepler-1647b is in the conservative habitable zone of the binary star throughout its orbit.

Original language	English
Article number	86
Journal	Astrophysical Journal
Volume	827
Issue number	1
DOIs	https://doi.org/10.3847/0004-637X/827/1/86
State	Published - 10 Aug 2016

Funding

Funders	Funder number
National Aeronautics and Space Administration	NNX14AB91G, NNX13AF20G, NNX13AI76G, NNX14AJ38G, 2015-1-850-04
Jet Propulsion Laboratory
Santa Fe Institute
NASA Exoplanet Science Institute
Higher Education Authority
Korea Astronomy and Space Science Institute
Irish Centre for High-End Computing

Keywords

binaries: eclipsing
planetary systems
stars: individual (KIC-5473556, Kepler-1647)
techniques: photometric

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Kostov, V. B., Orosz, J. A., Welsh, W. F., Doyle, L. R., Fabrycky, D. C., Haghighipour, N., Quarles, B., Short, D. R., Cochran, W. D., Endl, M., Ford, E. B., Gregorio, J., Hinse, T. C., Isaacson, H., Jenkins, J. M., Jensen, E. L. N., Kane, S., Kull, I., Latham, D. W., ... Borucki, W. J. (2016). KEPLER-1647B: The LARGEST and LONGEST-PERIOD KEPLER TRANSITING CIRCUMBINARY PLANET. Astrophysical Journal, 827(1), Article 86. https://doi.org/10.3847/0004-637X/827/1/86

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abstract = "We report the discovery of a new Kepler transiting circumbinary planet (CBP). This latest addition to the still-small family of CBPs defies the current trend of known short-period planets orbiting near the stability limit of binary stars. Unlike the previous discoveries, the planet revolving around the eclipsing binary system Kepler-1647 has a very long orbital period (∼1100 days) and was at conjunction only twice during the Kepler mission lifetime. Due to the singular configuration of the system, Kepler-1647b is not only the longest-period transiting CBP at the time of writing, but also one of the longest-period transiting planets. With a radius of 1.06 ± 0.01 R Jup, it is also the largest CBP to date. The planet produced three transits in the light curve of Kepler-1647 (one of them during an eclipse, creating a syzygy) and measurably perturbed the times of the stellar eclipses, allowing us to measure its mass, 1.52 ± 0.65 M Jup. The planet revolves around an 11-day period eclipsing binary consisting of two solar-mass stars on a slightly inclined, mildly eccentric (e bin = 0.16), spin-synchronized orbit. Despite having an orbital period three times longer than Earth's, Kepler-1647b is in the conservative habitable zone of the binary star throughout its orbit.",

keywords = "binaries: eclipsing, planetary systems, stars: individual (KIC-5473556, Kepler-1647), techniques: photometric",

author = "Kostov, {Veselin B.} and Orosz, {Jerome A.} and Welsh, {William F.} and Doyle, {Laurance R.} and Fabrycky, {Daniel C.} and Nader Haghighipour and Billy Quarles and Short, {Donald R.} and Cochran, {William D.} and Michael Endl and Ford, {Eric B.} and Joao Gregorio and Hinse, {Tobias C.} and Howard Isaacson and Jenkins, {Jon M.} and Jensen, {Eric L.N.} and Stephen Kane and Ilya Kull and Latham, {David W.} and Lissauer, {Jack J.} and Marcy, {Geoffrey W.} and Tsevi Mazeh and M{\"u}ller, {Tobias W.A.} and Joshua Pepper and Quinn, {Samuel N.} and Darin Ragozzine and Avi Shporer and Steffen, {Jason H.} and Guillermo Torres and Gur Windmiller and Borucki, {William J.}",

year = "2016",

month = aug,

day = "10",

doi = "10.3847/0004-637X/827/1/86",

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journal = "Astrophysical Journal",

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Kostov, VB, Orosz, JA, Welsh, WF, Doyle, LR, Fabrycky, DC, Haghighipour, N, Quarles, B, Short, DR, Cochran, WD, Endl, M, Ford, EB, Gregorio, J, Hinse, TC, Isaacson, H, Jenkins, JM, Jensen, ELN, Kane, S, Kull, I, Latham, DW, Lissauer, JJ, Marcy, GW, Mazeh, T, Müller, TWA, Pepper, J, Quinn, SN, Ragozzine, D, Shporer, A, Steffen, JH, Torres, G, Windmiller, G & Borucki, WJ 2016, 'KEPLER-1647B: The LARGEST and LONGEST-PERIOD KEPLER TRANSITING CIRCUMBINARY PLANET', Astrophysical Journal, vol. 827, no. 1, 86. https://doi.org/10.3847/0004-637X/827/1/86

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T2 - The LARGEST and LONGEST-PERIOD KEPLER TRANSITING CIRCUMBINARY PLANET

AU - Kostov, Veselin B.

AU - Orosz, Jerome A.

AU - Welsh, William F.

AU - Doyle, Laurance R.

AU - Fabrycky, Daniel C.

AU - Haghighipour, Nader

AU - Quarles, Billy

AU - Short, Donald R.

AU - Cochran, William D.

AU - Endl, Michael

AU - Ford, Eric B.

AU - Gregorio, Joao

AU - Hinse, Tobias C.

AU - Isaacson, Howard

AU - Jenkins, Jon M.

AU - Jensen, Eric L.N.

AU - Kane, Stephen

AU - Kull, Ilya

AU - Latham, David W.

AU - Lissauer, Jack J.

AU - Marcy, Geoffrey W.

AU - Mazeh, Tsevi

AU - Müller, Tobias W.A.

AU - Pepper, Joshua

AU - Quinn, Samuel N.

AU - Ragozzine, Darin

AU - Shporer, Avi

AU - Steffen, Jason H.

AU - Torres, Guillermo

AU - Windmiller, Gur

AU - Borucki, William J.

PY - 2016/8/10

Y1 - 2016/8/10

N2 - We report the discovery of a new Kepler transiting circumbinary planet (CBP). This latest addition to the still-small family of CBPs defies the current trend of known short-period planets orbiting near the stability limit of binary stars. Unlike the previous discoveries, the planet revolving around the eclipsing binary system Kepler-1647 has a very long orbital period (∼1100 days) and was at conjunction only twice during the Kepler mission lifetime. Due to the singular configuration of the system, Kepler-1647b is not only the longest-period transiting CBP at the time of writing, but also one of the longest-period transiting planets. With a radius of 1.06 ± 0.01 R Jup, it is also the largest CBP to date. The planet produced three transits in the light curve of Kepler-1647 (one of them during an eclipse, creating a syzygy) and measurably perturbed the times of the stellar eclipses, allowing us to measure its mass, 1.52 ± 0.65 M Jup. The planet revolves around an 11-day period eclipsing binary consisting of two solar-mass stars on a slightly inclined, mildly eccentric (e bin = 0.16), spin-synchronized orbit. Despite having an orbital period three times longer than Earth's, Kepler-1647b is in the conservative habitable zone of the binary star throughout its orbit.

AB - We report the discovery of a new Kepler transiting circumbinary planet (CBP). This latest addition to the still-small family of CBPs defies the current trend of known short-period planets orbiting near the stability limit of binary stars. Unlike the previous discoveries, the planet revolving around the eclipsing binary system Kepler-1647 has a very long orbital period (∼1100 days) and was at conjunction only twice during the Kepler mission lifetime. Due to the singular configuration of the system, Kepler-1647b is not only the longest-period transiting CBP at the time of writing, but also one of the longest-period transiting planets. With a radius of 1.06 ± 0.01 R Jup, it is also the largest CBP to date. The planet produced three transits in the light curve of Kepler-1647 (one of them during an eclipse, creating a syzygy) and measurably perturbed the times of the stellar eclipses, allowing us to measure its mass, 1.52 ± 0.65 M Jup. The planet revolves around an 11-day period eclipsing binary consisting of two solar-mass stars on a slightly inclined, mildly eccentric (e bin = 0.16), spin-synchronized orbit. Despite having an orbital period three times longer than Earth's, Kepler-1647b is in the conservative habitable zone of the binary star throughout its orbit.

KW - binaries: eclipsing

KW - planetary systems

KW - stars: individual (KIC-5473556, Kepler-1647)

KW - techniques: photometric

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KEPLER-1647B: The LARGEST and LONGEST-PERIOD KEPLER TRANSITING CIRCUMBINARY PLANET

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