Tau ceti planetary orbits


Författare/Upphovsman:
Icalanise
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https://sewiki.info/b/7a0cf
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This diagram depicts the orbits of the planets orbiting the star Tau Ceti. Orbital parameters are taken from:

Tuomi et al. (2012) "Signals embedded in the radial velocity noise. Periodic variations in the tau Ceti velocities" https://arxiv.org/abs/1212.4277

Planets e and f which are only detected in the combined datasets are shown with dotted orbits to indicate their less-certain status. For orbital positions the mean anomalies were computed from the time of periastron values given in table 9 of that paper. The symbols for the star and the planets are not drawn to scale.

The habitable zone is plotted according to the formulae given in:

Underwood, Jones and Sleep (2003) "The evolution of habitable zones during stellar lifetimes and its implications on the search for extraterrestrial life" https://arxiv.org/abs/astro-ph/0312522

  • Red = Recent Venus (inner) – Runaway greenhouse (outer)
  • Yellow = Runaway greenhouse (inner) – Water loss (outer)
  • Green = Water loss (inner) – First CO2 condensation (outer) = most conservative habitable zone
  • Cyan = First CO2 condensation (inner) – Maximum greenhouse (outer)
  • Blue = Maximum greenhouse (inner) – Early Mars (outer)
The debris disc is too large to be shown on this scale.
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CC BY-SA 3.0
Licensvillkor:
Creative Commons Attribution-Share Alike 3.0

Mer information om licensen för bilden finns här. Senaste uppdateringen: Sat, 07 Jan 2023 21:36:58 GMT