Surface flux patterns on planets in circumbinary systems and potential for photosynthesis

@article{Forgan2014SurfaceFP,
  title={Surface flux patterns on planets in circumbinary systems and potential for photosynthesis},
  author={Duncan H. Forgan and Alexander Mead and Charles S Cockell and John A. Raven},
  journal={International Journal of Astrobiology},
  year={2014},
  volume={14},
  pages={465 - 478}
}
Abstract Recently, the Kepler Space Telescope has detected several planets in orbit around a close binary star system. These so-called circumbinary planets will experience non-trivial spatial and temporal distributions of radiative flux on their surfaces, with features not seen in their single-star orbiting counterparts. Earth-like circumbinary planets inhabited by photosynthetic organisms will be forced to adapt to these unusual flux patterns. We map the flux received by putative Earth-like… Expand
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References

SHOWING 1-10 OF 62 REFERENCES
Kepler-47: A Transiting Circumbinary Multiplanet System
TLDR
The detection of Kepler-47 establishes that close binary stars can host complete planetary systems, and reveals two small planets orbiting a pair of two low-mass stars. Expand
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. Expand
On the Habitable Zones of Circumbinary Planetary Systems
The effect of the stellar flux on exoplanetary systems is becoming an increasingly important property as more planets are discovered in the habitable zone (HZ). The Kepler mission has recentlyExpand
Habitable planets around the star Gliese 581
Radial velocity surveys are now able to detect terrestrial planets at habitable distance from M-type stars. Recently, two planets with minimum masses below 10 Earth masses were reported in a tripleExpand
Habitability of Earth-mass Planets and Moons in the Kepler-16 System
We demonstrate that habitable Earth-mass planets and moons can exist in the Kepler-16 system, known to host a Saturn-mass planet around a stellar binary, by investigating their orbital stability inExpand
An Analytic Theory for the Orbits of Circumbinary Planets
Three transiting circumbinary planets (Kepler-16 b, Kepler-34 b, and Kepler-35 b) have recently been discovered from photometric data taken by the Kepler spacecraft. Their orbits are significantlyExpand
Prevalence of Earth-size planets orbiting Sun-like stars
TLDR
The National Aeronautics and Space Administration Kepler telescope is used to survey 42,000 Sun-like stars for periodic dimmings that occur when a planet crosses in front of its host star, finding 603 planets, 10 of which are Earth size and orbit in the habitable zone, where conditions permit surface liquid water. Expand
Kepler-16: A Transiting Circumbinary Planet
TLDR
The detection of a planet whose orbit surrounds a pair of low-mass stars, comparable to Saturn in mass and size and on a nearly circular 229-day orbit around its two parent stars, suggests that the planet formed within a circumbinary disk. Expand
HABITABLE ZONES AROUND MAIN-SEQUENCE STARS: DEPENDENCE ON PLANETARY MASS
The ongoing discoveries of extra-solar planets are unveiling a wide range of terrestrial mass (size) planets around their host stars. In this Letter, we present estimates of habitable zones (HZs)Expand
Calculating the Habitable Zone of Binary Star Systems II: P-Type Binaries
We have developed a comprehensive methodology for calculating the circumbinary HZ in planet-hosting P-type binary star systems. We present a general formalism for determining the contribution of eachExpand
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