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 (US) |
|---|---|
| Article number | 86 |
| Journal | Astrophysical Journal |
| Volume | 827 |
| Issue number | 1 |
| DOIs | |
| State | Published - Aug 10 2016 |
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All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Space and Planetary Science
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KEPLER-1647B : The LARGEST and LONGEST-PERIOD KEPLER TRANSITING CIRCUMBINARY PLANET. / Kostov, Veselin B.; Orosz, Jerome A.; Welsh, William F.; Doyle, Laurance R.; Fabrycky, Daniel C.; Haghighipour, Nader; Quarles, Billy; Short, Donald R.; Cochran, William D.; Endl, Michael; Ford, Eric B.; Gregorio, Joao; Hinse, Tobias C.; Isaacson, Howard; Jenkins, Jon M.; Jensen, Eric L.N.; Kane, Stephen; Kull, Ilya; Latham, David W.; Lissauer, Jack J.; Marcy, Geoffrey W.; Mazeh, Tsevi; Müller, Tobias W.A.; Pepper, Joshua; Quinn, Samuel N.; Ragozzine, Darin; Shporer, Avi; Steffen, Jason H.; Torres, Guillermo; Windmiller, Gur; Borucki, William J.
In: Astrophysical Journal, Vol. 827, No. 1, 86, 10.08.2016.Research output: Contribution to journal › Article
TY - JOUR
T1 - KEPLER-1647B
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.
UR - http://www.scopus.com/inward/record.url?scp=84982107237&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84982107237&partnerID=8YFLogxK
U2 - 10.3847/0004-637X/827/1/86
DO - 10.3847/0004-637X/827/1/86
M3 - Article
AN - SCOPUS:84982107237
VL - 827
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 1
M1 - 86
ER -