Blue, White, & Black dwarfs and the Star Frontiers setting

jedion357's picture
jedion357
August 10, 2016 - 5:33pm
I was reading up on blue dwarf stars specifically and its said these are only theoretical as the universe is not old enough for a red dwarf to evolve into a blue dwarf let alone the white and black stages of a red dwarf's life cycle.

AD disconnects the setting from the Milky Way; so can we not imagine the setting in this universe to be old enough to contain blue dwarfs?


I might not be a dralasite, vrusk or yazirian but I do play one in Star Frontiers!
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jedion357's picture
jedion357
August 10, 2016 - 5:40pm
Or even a stellar fragment like a black dwarf.
I might not be a dralasite, vrusk or yazirian but I do play one in Star Frontiers!

TerlObar's picture
TerlObar
August 10, 2016 - 5:58pm
As an astronomer I'm not even sure what you are talking about.  As far as I know, a blue dwarf is just a blue main sequence star (think B, A, F spectral types) as all main sequence stars (lumiosity class V) are "dwarfs".  i.e. the sun is a yellow dwarf star.  I've never heard it used any other way.  Can you provide a reference?

A white dwarf is what the sun will evolve into when it dies and sheds it's outer layers.  There are lots of those around.  A black dwarf is a white dwarf that has cooled enough to not be radiating.  The universe probably isn't old enough for these to have formed and definitely not old enough for red dwarfs to have used up all their fuel (it takes 50-100 billion years).
Ad Astra Per Ardua!
Webmaster - The Star Frontiers Network & this site
Founding Editor - The Frontier Explorer Magazine
Managing Editor - The Star Frontiersman Magazine

jedion357's picture
jedion357
August 10, 2016 - 6:01pm
They were talking about a red dwarf evolving into a blue then white dwarf then black but since a red dwarf is so long lived these other stages are only speculative due to the age of the universe.


https://en.m.wikipedia.org/wiki/Blue_dwarf_(red-dwarf_stage)
I might not be a dralasite, vrusk or yazirian but I do play one in Star Frontiers!

TerlObar's picture
TerlObar
August 10, 2016 - 6:53pm
Interesting. I'll have to read through the full paper referenced by the wikipedia article.  Looking at it's citations (it only has 10 in the past 11 years, so not much) they are all about the planet forming properties, not about the stellar evolution.
Ad Astra Per Ardua!
Webmaster - The Star Frontiers Network & this site
Founding Editor - The Frontier Explorer Magazine
Managing Editor - The Star Frontiersman Magazine

Tchklinxa's picture
Tchklinxa
August 10, 2016 - 7:19pm
It seems like we could have a wider spectrum of star types with reasons why people would go there. 


 "Never fire a laser at a mirror."

jedion357's picture
jedion357
August 11, 2016 - 3:37am
I found it interesting that with the evolution from red to blue dwarf and the greater output of energy a planet that had previously been frozen could suddenly be habitable.

However, as intriguing as that is I don't guess it happens overnight. So if used the a red dwarf that transitioned to blue that transition probably would not happen during the recorded history of the Frontier. 

I suppose what you could do is have the previously habitable tidally locked planet is now baked out but there are ruins of its previous civilization. There is a new even more lovely habitable planet in the system.

EDIT:
The Previously inhabitable planet is baked out and the ruins of a dead civilization are plain to see. It seems that this civilization managed to move to the newly inhabitable world. The mystery is the tech of this civilization is not advanced enough for space travel. The population growth number, worked backward point to zero population at about the time the astrophysicist say the star transitioned. The legends of this civilization claim "god or gods" judged them with fire but a select few were brought to "heaven".  In fact when the first exploration craft landed the sapients asked the explorers if the were their societies analog if angels or devils. The explorers denied both but the jury is still out as far as the locals are concerned though there is a strong current of thought that suggests that the visitors (core four) are most likely devils ( and of course there has been some behavior displayed by members of the core four that is easily cast as devilish after all it will be impossible to keep corporate reps from showing up. ). 
I might not be a dralasite, vrusk or yazirian but I do play one in Star Frontiers!

Tchklinxa's picture
Tchklinxa
September 5, 2016 - 8:56pm
Good plot... :)

 "Never fire a laser at a mirror."