Rain forest world

General physics and astronomy discussions not directly related to Celestia
ZZ-Cephei
Posts: 11
Joined: 28.08.2006
With us: 18 years 2 months
Location: Italy

Post #21by ZZ-Cephei » 04.09.2006, 09:40

Neethis wrote:What I was thinking about definatly wouldnt work around an M-type Dwarf. To be close enough to get the needed heat to keep most of the planets water vapourised in the air, it would become tidally locked, and obviously green (or other coloured) plants could never grow on the dark side, leaving a whole hemisphere with no plants :cry:

I was thinking more about a K or F type maybe... theyre both cooler than G types right? :?


Then if you need a F or K star, you should fix such a planet in an orbit closer than Earth but further than Venus, something like 0.91-0.95 AUs AUs.
If you choose a F star (range F7-F9) with masses between 1.2 - 1 Solar masses, you should put the planet in the correspondent average separation. Idem for K star (range 1.1 - 0.8 Solar masses).

For example:

- A F8V Star (1.2 Solar masses)
- Stellar Lifespan: 7-8 Gyrs (quite good)
- Habitable zone: 1.6 AUs
- Rainforest Planet Comfort Zone: 1.45 - 1.52 AUs

Either:

- A K0V-K2V star (0.95 Solar masses)
- Stellar Lifespan: >>12 Gyrs (even better)
- Habitable Zone: 0.75 AUs
- Rainforest Planet Comfort Zone: 0.68 - 0.71 AUs

Is it right for you?
A lot of hidden planets must be discovered. Many of them are still undercover...see the Gamma Cephei and Pollux's cases...


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