kepler tagged posts

Cosmic barbecue: Researchers spot 60 new ‘hot Jupiter’ candidates

The diagram above shows a hot Jupiter at various phases of its orbit. The sizes of the star and planet and the separations between them are to scale for a typical hot Jupiter. The amount of reflected starlight that is observed depends on the planet's position within its orbit and the inclination of the orbit with respect to the observer.

The diagram above shows a hot Jupiter at various phases of its orbit. The sizes of the star and planet and the separations between them are to scale for a typical hot Jupiter. The amount of reflected starlight that is observed depends on the planet’s position within its orbit and the inclination of the orbit with respect to the observer.

 
Yale researchers have identified 60 potential new “hot Jupiters” — highly irradiated worlds that glow like coals on a barbecue grill and are found orbiting only 1% of Sun-like stars. Hot Jupiters constitute a class of gas giant planets located so close to their parent stars that they take less than a week to complete an orbit. Second-year Ph.D...
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Kepler has taught us that Rocky Planets are Common

New planet candidates from the eighth Kepler planet candidate catalog show numerous terrestrial worlds that are near the size of Earth and within the habitable zone of their stars. The dark green span represents an optimistic estimate for habitable zone, while the brighter green a more conservative estimate. Blue circles are confirmed exoplanets, while yellow circles are new planet candidates that require follow-up observations. Credit: NASA/Ames Research Center/Wendy Stenzel

New planet candidates from the eighth Kepler planet candidate catalog show numerous terrestrial worlds that are near the size of Earth and within the habitable zone of their stars. The dark green span represents an optimistic estimate for habitable zone, while the brighter green a more conservative estimate. Blue circles are confirmed exoplanets, while yellow circles are new planet candidates that require follow-up observations. Credit: NASA/Ames Research Center/Wendy Stenzel

Rocky planets are probably a whole lot more common in our galaxy than astronomers previously believed—according to the latest release of Kepler Space Telescope data last week—a scenario that enhances the prospects for extraterrestrial life in nearby solar systems...

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Heartbeat Stars’ unlocked in new study

This artist's concept depicts "heartbeat stars"

This artist’s concept depicts “heartbeat stars,” which have been detected by NASA’s Kepler Space Telescope and others. Credits: NASA/JPL-Caltech

Discovered in large numbers by NASA’s Kepler, heartbeat stars are binary stars that got their name because if you were to map out their brightness over time, the result would look like an electrocardiogram. Scientists are interested in them because they are binary systems in elongated elliptical orbits. This makes them natural laboratories for studying the gravitational effects of stars on each other. In a heartbeat star system, the distance between the two stars varies drastically as they orbit each other. Heartbeat stars can get as close as a few stellar radii to each other, and as far as 10 times that distance during one orbit.

At the point of ...

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