Exoplanet Comparison Gliese 581 c


Forfatter/Opretter:
Aldaron, a.k.a. Aldaron
Attribution:
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Kredit:
Eget arbejde, incorporating public domain images for reference planets (see below)
Shortlink:
https://dkwiki.dk/b/3113f
kilde:
Wikimedia Commons
størrelse:
1040 x 480 Pixel (227776 Bytes)
beskrivelse:
Comparison of several possible sizes for the exoplanet Gliese 581 c with the Solar System planets Earth and Neptune, using approximate models of planetary radius as a function of mass[1] for several possible compositions, based on mass reported in the Open Exoplanet Catalogue[2] as of 2015-11-14. Models include:
 
water world with a rocky core, composed of 75% H2O, 3% Fe, 22% MgSiO3
 
hypothetical pure water (ice) planet, the largest size for Gliese 581 c without a significant H/He envelope
 
rocky terrestrial "Earth-like" planet, composed of 67% Fe, 32.5% MgSiO3
 
hypothetical pure iron planet, Gliese 581 c's theoretical smallest size

Gliese 581 c is not likely to be smaller than the iron planet, and will be considerably larger than the water planet if significant H or He is present. For non-transiting planets, all modeled sizes will be underestimates to the extent that the planet's actual mass is larger than the reported minimum mass.

  1. ↑ Seager, S.; M. Kuchner, C. A. Hier-Majumder and B. Militzer (2007). "Mass–radius relationships for solid exoplanets". The Astrophysical Journal 669: 1279–1297. DOI:10.1086/521346. Retrieved on 2015-11-14.
  2. ↑ Open Exoplanet Catalogue (2015-11-14). Retrieved on 2015-11-14.
Licens:
CC BY-SA 3.0
Licensbetingelser:
Creative Commons Attribution-Share Alike 3.0

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