Thread: Stellar Mapping
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Old 08-22-2018, 02:14 PM   #17
Phantasm
 
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Join Date: Jun 2006
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Default Re: Stellar Mapping

Quote:
Originally Posted by acrosome View Post
Now if only there were a flag for HABCAT status... :)
I'm puzzled by all the M-class red dwarfs on the HabCat list while it overlooks a number of K, G and F stars (admittedly they are the quieter red dwarfs, so less chances of solar flares stripping away atmospheres). Tide-locking or 3:2 orbital:rotation resonances, and lack of bright enough light in the right wavelengths for photosynthesis (to give and maintain oxygen in atmospheres instead of CO2) seem to be factors against the inclusion of anything dimmer than an M1, in my opinion, but HabCat lists quite a few stars down to M5 in brightness.

Maybe I'm more pessimistic about the likelihood of habitability of comfort zone planets around cooler stars than the HabCat authors.
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