Nice find, but it looks a bit photoshopped to be honest (That yellow thing at the top of the star, also the fact that there has been no reported findings of earth-likes around brown dwarfs.
A very tight binary pairing with a main sequence star has to be one of the few--and maybe only--configurations possible for an ELW to orbit a brown dwarf. Great find!
A nicely colorful Gas giant. I actually have never seen this combination of colors before. But considering the vasteness of the milkyway, it might be terribly normal anyway.
You could breathe it, but your brain would become starved of oxygen in short order and you would fall unconscious. Being unable to do anything about it, you would then die.
It's a perfectly safe mixture to breathe (assuming the trace gases aren't dangerous) but humans require a minimum of about 19.5% oxygen in the mix for survival. However I believe that is assuming 1 atmosphere, I don't understand the biology behind it but I think those mixtures may change at different atmospheric pressures (i.e. the 3.7 atmospheres on that ELP).
I've had a look and found these items about oxygen concentrations and breathability.
Basically it comes down to getting enough oxygen into the blood which is (mostly ?) determined by the partial pressure of oxygen:
partial pressure = total absolute pressure × volume fraction of gas component
So, PP = 3.7 x 0.6 = 0.222 as opposed to roughly 0.21 for earth sea level. Pretty much earthlike, although I haven't found anything about the effects of (increased) atmospheric pressure on the lungs.
From an article about diving gas mixtures: "The minimum safe partial pressure of oxygen in a breathing gas is commonly held to be 16 kPa (0.16 bar)"
3.7 earth atmospheres is the ambient pressure at about 27m under the sea and I've found that to be perfectly tolerable for short periods. Not sure what the long term effects of trying to live there would be, a 15 litre tank of air only lasts so long, and you can't spend too long at that depth without needing decompression stops on the way up.
Yeah actually my first comment was going to be that the atmospheres would be the hard part of that more than the breathing mix.
Im sort of guessing that life on that planet would be fairly normal, until you tried to leave. Youd have to adjust to the higher atmosphere, but youd probably be fine, I think you wouldnt be able to come to a lower atmosphere pressure (like earth) without adjusting to it, like a diver coming up from depth. you wouldnt need an air tank to live there if your math is right, but as iain said, youd need decompression stops if you tried to leave it.
I've seen some weird systems, but I don't have the details to hand right now...including one with 3 Herbig Ae/Be stars in it - given how rare they are, to find three in one system was a treat.
Here's a snap as I flew towards one of the Herbig Ae/Be and its orbiting stars in that system:
So, just as a placeholder to remind me of this thread, I'll share this planet and its super-close orbiting moon - this photo is not a trick of perspective, it was a small planet and moon, and I was pretty close to them (and I have a video of a fly-through too, but not processed or uploaded yet).
Two class B stars orbiting each other, A class A and a T-Tauri orbiting each other, both pair orbit each other, and a huge Class A star orbits the whole mess (And a planet is circling around the mess somewhere)
The star that can be seen in the middle is the orbiting class A star, it is very huge as that picture is 2000ls from the star.
Following just minutes before my last extraordinary finding, i find this beautiful and rather rare, ringed t-tauri star.
The asteroid field was gorgeous.
If i keep finding stuff like this at this rate, i will not reach my goal, which one could argue isn't that bad, but i really want to get there today as this is the only time i probably will get to play this whole week.