FA+
Shop
1820 submissions
Coosa! Another Hayven Celestia species, this another one invented by Gre7g for the upcoming novel Fair Trade! Most of these details don't come into play in the book, given I just made them up (consider these species sheets deuterocanon)
Posted using PostyBirb
Posted using PostyBirb
Category Artwork (Digital) / General Furry Art
Species Unspecified / Any
Size 1280 x 871px
File Size 303.6 kB
You know I had a terrible, terrible thought of there being a lio manga (cartoon) that's basically Gummi Bears, except with the coosa as the gummi bears and krakun in place of Duke Igthorn and lio in place of the good humans, and they have secret coosa berry juice and everything
It's the tanuki from Pom Poko! :P
http://www.dvdactive.com/images/rev.....3_original.jpg :P
http://www.dvdactive.com/images/rev.....3_original.jpg :P
Hm... That atmospheric composition is more than a bit odd from several perspectives. First, both hydrogen gas and ozone are supremely reactive. In fact, ozone is so unstable, it has a half-life of a day or less, decomposing into regular O2. Worse, hydrogen and ozone are supremely reactive with each other to form water. Now, I'm not an actual chemist, just a lowly engineer, but I suspect that at the given percentages, the atmosphere would combust given the least excuse.*
The other issue is that hydrogen has a very strong tendency to rise and then escape the atmosphere of a planet. In order to control this effect, it would require Coosatec to be quite large and/or dense: A quick google search shows that in order to reliably retain hydrogen, a planet has to have about ten times the mass of earth. However, this sort of planet would tend to have an atmosphere rather denser than the 80kpa given.
*Hydrogen usually requires about 4kPa partial pressure (aka, pp) with 20kPa pp worth of O2 to sustain combustion. I strongly suspect adding ~4kPa worth of viciously reactive O3 to the mix will easily compensate for the slightly too low pp of H2.
The other issue is that hydrogen has a very strong tendency to rise and then escape the atmosphere of a planet. In order to control this effect, it would require Coosatec to be quite large and/or dense: A quick google search shows that in order to reliably retain hydrogen, a planet has to have about ten times the mass of earth. However, this sort of planet would tend to have an atmosphere rather denser than the 80kpa given.
*Hydrogen usually requires about 4kPa partial pressure (aka, pp) with 20kPa pp worth of O2 to sustain combustion. I strongly suspect adding ~4kPa worth of viciously reactive O3 to the mix will easily compensate for the slightly too low pp of H2.
Okay, hydrogen being very reactive with ozone IS actually a reason to not run with it. On the other hand, I'm very quickly running out of simple reactive gases to mix with an oxygen atmosphere. Already using ammonia for one species, sulfur dioxide for another. hydrogen bromide for another. I don't want to use something for coosa that's perceived as negative like chlorine gas (I'm saving that one) and I'm not going to use noble gases unless I have to.
Phosphine is too explosive.
Methane is too explosive.
Carbon tetrafluoride or other kinds of freon might work but it'd be really weird to use with a species that is nature-oriented from an optics perspective (I mean, unless I wanted to be ironic)
So . . . I dunno
Phosphine is too explosive.
Methane is too explosive.
Carbon tetrafluoride or other kinds of freon might work but it'd be really weird to use with a species that is nature-oriented from an optics perspective (I mean, unless I wanted to be ironic)
So . . . I dunno
Well, CO2 might be pretty good candidate. It's not very reactive, and as long as there is sufficient pp of O2, it won't harm other species much, though it might make them uncomfortable. Doing some research on this: For humans, at 2-4% CO2 it affects respiration, at about 10% causes tremors and visual disturbances and people start falling unconscious, and at 25% there is a strong risk of death. However, the interesting thing is that there are already cognitive effects when you hit .25% concentration...
Not sure why you don't like the noble gases, neon, argon and krypton should be pretty good candidates. (Maybe not Xenon or Radon, as they'd have a strong tendency to pool unless there is a very active atmosphere to keep things mixed. Though that might make for a good scenario: A species that has an instinctual dislike of closed or sheltered low places, as those might contain pooled xenon. This could have implications for the toleration of space flight...)
Carbon Tetrachloride might be an interesting. While technically a liquid at room temperature, its boiling point is low enough that it could make up a decent percentage of an atmosphere. It's kinda bad for humans, though, if they show up in the story.
You mentioned Carbon Tetrafluoride. IMHO it would actually be quite a good candidate, it's a gas, very stable, isn't poisonous, and its main risk is pooling, due to high molecular weight. Also, it's an excellent greenhouse gas, perfect for a planet that's on the far edge of the habitability zone, to help keep planetary temperatures up. The life on the planet would probably have some 'interesting' fluorine chemistry, though, so foods are very unlikely to be compatible with alien (to them) life.
You could also run a super-dense nitrogen atmosphere on a planet larger than earth. Just keep the partial pressure of oxygen in the 20ish kPa range, and not too much higher, or else you start getting a situation where fires are very hard to put out.
For a planet with at least 6 earth masses, a Helium atmosphere would be stable.
Finally, if you want to move away from oxygen chemistry, there's nothing wrong with a methane atmosphere. You can just reverse earth biology: We consume the fuel, and breathe in the oxidizer. There is in principle nothing that says an alien species can't consume the oxidizer, and breathe in the fuel...
Anyway, just a bunch of random thoughts. Feel free to use everything or nothing, just hope it inspires you. I've enjoyed your work for a good long time.
Not sure why you don't like the noble gases, neon, argon and krypton should be pretty good candidates. (Maybe not Xenon or Radon, as they'd have a strong tendency to pool unless there is a very active atmosphere to keep things mixed. Though that might make for a good scenario: A species that has an instinctual dislike of closed or sheltered low places, as those might contain pooled xenon. This could have implications for the toleration of space flight...)
Carbon Tetrachloride might be an interesting. While technically a liquid at room temperature, its boiling point is low enough that it could make up a decent percentage of an atmosphere. It's kinda bad for humans, though, if they show up in the story.
You mentioned Carbon Tetrafluoride. IMHO it would actually be quite a good candidate, it's a gas, very stable, isn't poisonous, and its main risk is pooling, due to high molecular weight. Also, it's an excellent greenhouse gas, perfect for a planet that's on the far edge of the habitability zone, to help keep planetary temperatures up. The life on the planet would probably have some 'interesting' fluorine chemistry, though, so foods are very unlikely to be compatible with alien (to them) life.
You could also run a super-dense nitrogen atmosphere on a planet larger than earth. Just keep the partial pressure of oxygen in the 20ish kPa range, and not too much higher, or else you start getting a situation where fires are very hard to put out.
For a planet with at least 6 earth masses, a Helium atmosphere would be stable.
Finally, if you want to move away from oxygen chemistry, there's nothing wrong with a methane atmosphere. You can just reverse earth biology: We consume the fuel, and breathe in the oxidizer. There is in principle nothing that says an alien species can't consume the oxidizer, and breathe in the fuel...
Anyway, just a bunch of random thoughts. Feel free to use everything or nothing, just hope it inspires you. I've enjoyed your work for a good long time.
I avoid noble gases basically because of their low-reactive nature. My assumption in this is that you need some kind of gas that's at least mildly reactive for evolutionary support; if little can happen on a chemical level, then it's that much harder for life to employ it as a resource. Hence there's an abundance of nitrogen in the atmosphere but our bodies don't use it; we use oxygen instead specifically because it has a more reactive property (oxidation) while the nitrogen we end up using is part of complex molecules formed post-processing through plants. Noble gases are even LESS reactive than nitrogen.
As it is now I've been keeping partial oxygen atmosphere for all the species because 1) oxide reactions are more familiar and allow a little bit of leeway in saying that there are similar amino acids/complex carbohydrates between atmospheres so SOME food sources are cross-compatible (a significant minority, but some), and 2) it's a bit of a requirement because of the rebreathers that characters use in-story filter out non-oxygen gases.
For the coosa in particular, in the story Fair Trade, Kanti gets the more-or-less magical property of cross-atmosphere survival where he can breathe the krakun air AND his own air AND coosa air at minimum. Probably others, given the sourang also deal with the geordians (ammonia-breathers) and uliyavi or however that's spelled (who I haven't developed anything for as there's exactly one character). This is basically delving into superscience, but I'd still like some methodology of being able to say "he can utilize oxygen from most atmospheres and is protected from non-compatible gas sources as long as they aren't additionally corrosive or suffocating", so I'm still running with coosa atmosphere still being at least partially oxygen.
As it is now I've been keeping partial oxygen atmosphere for all the species because 1) oxide reactions are more familiar and allow a little bit of leeway in saying that there are similar amino acids/complex carbohydrates between atmospheres so SOME food sources are cross-compatible (a significant minority, but some), and 2) it's a bit of a requirement because of the rebreathers that characters use in-story filter out non-oxygen gases.
For the coosa in particular, in the story Fair Trade, Kanti gets the more-or-less magical property of cross-atmosphere survival where he can breathe the krakun air AND his own air AND coosa air at minimum. Probably others, given the sourang also deal with the geordians (ammonia-breathers) and uliyavi or however that's spelled (who I haven't developed anything for as there's exactly one character). This is basically delving into superscience, but I'd still like some methodology of being able to say "he can utilize oxygen from most atmospheres and is protected from non-compatible gas sources as long as they aren't additionally corrosive or suffocating", so I'm still running with coosa atmosphere still being at least partially oxygen.
Comments