Kepler-47: A Transiting Circumbinary Multiplanet System

@article{Orosz2012Kepler47AT,
  title={Kepler-47: A Transiting Circumbinary Multiplanet System},
  author={Jerome A. Orosz and William F. Welsh and Joshua A. Carter and Daniel C. Fabrycky and William D. Cochran and Michael Endl and Eric B. Ford and Nader Haghighipour and Phillip J. MacQueen and Tsevi Mazeh and Roberto Sanchis-Ojeda and Donald R. Short and Guillermo Torres and Eric Agol and Lars A. Buchhave and Laurance R. Doyle and Howard T. Isaacson and Jack J. Lissauer and Geoffrey W. Marcy and Avi Shporer and Gur Windmiller and Thomas Barclay and Alan P. Boss and Bruce D. Clarke and Jonathan J. Fortney and John Charles Geary and Matthew J. Holman and Daniel Huber and Jon M. Jenkins and Karen Kinemuchi and Ethan Kruse and Darin Ragozzine and Dimitar D. Sasselov and Martin D. Still and Peter Tenenbaum and Kamal Uddin and Joshua N. Winn and David G. Koch and William J. Borucki},
  journal={Science},
  year={2012},
  volume={337},
  pages={1511 - 1514}
}
A Pair of Planets Around a Pair of Stars Most of the planets we know about orbit a single star; however, most of the stars in our galaxy are not single. Based on data from the Kepler space telescope, Orosz et al. (p. 1511, published online 28 August) report the detection of a pair of planets orbiting a pair of stars. These two planets are the smallest of the known transiting circumbinary planets and have the shortest and longest orbital periods. The outer planet resides in the habitable zone… 

Evolution of circumbinary planets around eccentric binaries: The case of Kepler-34

The existence of planets orbiting a central binary star system immediately raises questions regarding their formation and dynamical evolution. Recent discoveries of circumbinary planets by the Kepler

Kepler 47: First Multi-circumbinary Planet System

The eclipsing binary Kepler-47 is the first system detected to have multiple ▶ circumbinary planets (Orosz et al. 2012). The binary consists of a Sun-like star and a companion roughly one-third its

Five Planets Transiting a Ninth Magnitude Star

The Kepler mission has revealed a great diversity of planetary systems and architectures, but most of the planets discovered by Kepler orbit faint stars. Using new data from the K2 mission, we

P-TYPE PLANET–PLANET SCATTERING: KEPLER CLOSE BINARY CONFIGURATIONS

A hydrodynamical simulation shows that a circumbinary planet will migrate inward to the edge of the disk cavity. If multiple planets form in a circumbinary disk, successive migration will lead to

No circumbinary planets transiting the tightest Kepler binaries – a possible fingerprint of a third star

The Kepler mission has yielded the discovery of eight circumbinary systems, all found around eclipsing binaries with periods greater than 7 d. This is longer than the typical eclipsing binary period

PREDICTING A THIRD PLANET IN THE KEPLER-47 CIRCUMBINARY SYSTEM

We have studied the possibility that a third circumbinary planet in the Kepler-47 planetary system is the source of the single unexplained transiting event reported during the discovery of these

Modeling circumbinary planets: The case of Kepler-38

Context. Recently, a number of planets orbiting binary stars have been discovered by the Kepler space telescope. In a few systems the planets reside close to the dynamical stability limit. Owing to

On the abundance of circumbinary planets

Circumbinary planets are bodies that orbit both components in a binary star system. This thesis focuses on transits of these planets, which with the aid of the Kepler space telescope have recently

TATOOINE'S FUTURE: THE ECCENTRIC RESPONSE OF KEPLER'S CIRCUMBINARY PLANETS TO COMMON-ENVELOPE EVOLUTION OF THEIR HOST STARS.

TLDR
This work combines binary star evolution models with dynamical simulations to study the orbital evolution of circumbinary planets as their hosts undergo common-envelope (CE) stages, losing in the process a tremendous amount of mass on dynamical timescales.

Parking planets in circumbinary discs

The Kepler space mission has discovered about a dozen planets orbiting around binary stars systems. Most of these circumbinary planets lie near their instability boundaries, at about three to five
...

References

SHOWING 1-10 OF 70 REFERENCES

Kepler-36: A Pair of Planets with Neighboring Orbits and Dissimilar Densities

TLDR
Another violation of the orbit-composition pattern is reported: two planets orbiting the same star with orbital distances differing by only 10% and densities differing by a factor of 8, likely a rocky “super-Earth,” whereas the other is more akin to Neptune.

Transiting circumbinary planets Kepler-34 b and Kepler-35 b

TLDR
The observed rate of circumbinary planets in this sample implies that more than ∼1% of close binary stars have giant planets in nearly coplanar orbits, yielding a Galactic population of at least several million.

Kepler Planet-Detection Mission: Introduction and First Results

TLDR
The planetary findings derived from the first six weeks of observations with the Kepler mission are summarized, which include the detection of five new exoplanets, which confirm the existence of planets with densities substantially lower than those predicted for gas giant planets.

Alignment of the stellar spin with the orbits of a three-planet system

TLDR
An analysis of transits of planets over starspots on the Sun-like star Kepler-30 is reported, and it is shown that the orbits of its three planets are aligned with the stellar equator, similar to that of the Solar System, and contrasts with the isolated hot Jupiters.

An abundance of small exoplanets around stars with a wide range of metallicities

TLDR
Spectroscopic metallicities of the host stars of 226 small exoplanet candidates discovered by NASA's Kepler mission are reported, finding that planets with radii less than four Earth radii form around host stars with a wide range of metallicities (but on average a metallicity close to that of the Sun), whereas large planets preferentially form around stars with higher metallicities.

Exoplanet properties from Lick, Keck and AAT

Doppler-shift measurements with a remarkable precision of Δλ/λ=3×10−9, corresponding to velocities of 1 m s−1, have been made repeatedly of 2500 stars located within 300 light years. The observed

Measurement of Spin-Orbit Alignment in an Extrasolar Planetary System

We determine the stellar, planetary, and orbital properties of the transiting planetary system HD 209458 through a joint analysis of high-precision radial velocities, photometry, and timing of the

On the formation and migration of giant planets in circumbinary discs

Aims. We present the results of hydrodynamic simulations of the formation and subsequent orbital evolution of giant planets embedded in a circumbinary disc. The aim is to examine whether or not giant

USING STAR SPOTS TO MEASURE THE SPIN–ORBIT ALIGNMENT OF TRANSITING PLANETS

Spectroscopic follow-up of dozens of transiting planets has revealed the degree of alignment between the equators of stars and the orbits of the planets they host. Here we determine a method,

Long-Term Stability of Planets in Binary Systems

A simple question of celestial mechanics is investigated: in what regions of phase space near a binary system can planets persist for long times? The planets are taken to be test particles moving in
...