Minineptunus
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En minineptunus kallas en exoplanet som har en massa som är betydligt mindre än Neptunus och Uranus, men som ändå liknar Neptunus med den tjocka atmosfären.[1] Det är möjligt att de har en tjock atmosfär av väte och helium överst och djupa hav med vatten, ammoniak, och tyngre gaser under, men det är inte bekräftat.
De skiljer sig från de så kallade superjordar, som består av sten.[2][3]
Källor
- Den här artikeln är helt eller delvis baserad på material från norska Wikipedia (bokmål/riksmål), 9 oktober 2013.
Fotnoter
- ^ Optical to near-infrared transit observations of super-Earth GJ1214b: water-world or mini-Neptune?, E.J.W. de Mooij (1), M. Brogi (1), R.J. de Kok (2), J. Koppenhoefer (3,4), S.V. Nefs (1), I.A.G. Snellen (1), J. Greiner (4), J. Hanse (1), R.C. Heinsbroek (1), C.H. Lee (3), P.P. van der Werf (1),
- ^ Architecture of Kepler's Multi-transiting Systems: II. New investigations with twice as many candidates, Daniel C. Fabrycky, Jack J. Lissauer, Darin Ragozzine, Jason F. Rowe, Eric Agol, Thomas Barclay, Natalie Batalha, William Borucki, David R. Ciardi, Eric B. Ford, John C. Geary, Matthew J. Holman, Jon M. Jenkins, Jie Li, Robert C. Morehead, Avi Shporer, Jeffrey C. Smith, Jason H. Steffen, Martin Still
- ^ When Does an Exoplanet’s Surface Become Earth-Like?, blogs.scientificamerican.com, 20 juni 2012
Media som används på denna webbplats
PIA23004 K2-288Bb (Artist's Illustration).jpg
The newfound planet K2-288Bb, illustrated here, is slightly smaller than Neptune. Located about 226 light-years away, it orbits the fainter member of a pair of cool M-type stars every 31.3 days. NASA's Jet Propulsion Laboratory, Pasadena, California, manages the Spitzer Space Telescope mission for NASA's Science Mission Directorate, Washington. Science operations are conducted at the Spitzer Science Center at Caltech in Pasadena, California. Spacecraft operations are based at Lockheed Martin Space Systems Company, Littleton, Colorado. Data are archived at the Infrared Science Archive housed at the Infrared Processing and Analysis Center at Caltech. Caltech manages JPL for NASA. NASA Ames manages the Kepler and K2 missions for NASA's Science Mission Directorate. JPL managed Kepler mission development. Ball Aerospace & Technologies Corporation operates the flight system with support from the Laboratory for Atmospheric and Space Physics at the University of Colorado in Boulder. For more information about the Spitzer mission, visit http://www.nasa.gov/spitzer and http://spitzer.caltech.edu. For more information on the Kepler and the K2 mission, visit www.nasa.gov/Kepler.
The newfound planet K2-288Bb, illustrated here, is slightly smaller than Neptune. Located about 226 light-years away, it orbits the fainter member of a pair of cool M-type stars every 31.3 days. NASA's Jet Propulsion Laboratory, Pasadena, California, manages the Spitzer Space Telescope mission for NASA's Science Mission Directorate, Washington. Science operations are conducted at the Spitzer Science Center at Caltech in Pasadena, California. Spacecraft operations are based at Lockheed Martin Space Systems Company, Littleton, Colorado. Data are archived at the Infrared Science Archive housed at the Infrared Processing and Analysis Center at Caltech. Caltech manages JPL for NASA. NASA Ames manages the Kepler and K2 missions for NASA's Science Mission Directorate. JPL managed Kepler mission development. Ball Aerospace & Technologies Corporation operates the flight system with support from the Laboratory for Atmospheric and Space Physics at the University of Colorado in Boulder. For more information about the Spitzer mission, visit http://www.nasa.gov/spitzer and http://spitzer.caltech.edu. For more information on the Kepler and the K2 mission, visit www.nasa.gov/Kepler.