Why are Class L brown dwarves (dwarfs) just as hot as Class O blue Giants?
- Thread starter GraXXoR
- Start date
Because...physics....?
Yeah I think stars need to produce more heat based on their class and luminosity aswell
Yeah I think stars need to produce more heat based on their class and luminosity aswell
You are a lot closer to the Brown dwarf than the O class. If you go to the same distance you will find that there is no % with the Brown dwarf
This, you standard O class is a lot bigger then your standard brown dwarf, its easy to missjudge distance.
Oh btw, I should mention you can have the exact temperature of a star, the info is in the system map.
.... Because everyone is hot to someone ...
...I'll get my coat...
...I'll get my coat...
Star temperatures are typically measured by surface temp.
However, you are scooping in the corona which for the sun is between 1-3M Kelvin.
https://en.wikipedia.org/wiki/Corona
Beyond a certain temp. it just becomes 'hot', so no effective difference in how fast your ship heats up.
However, you are scooping in the corona which for the sun is between 1-3M Kelvin.
https://en.wikipedia.org/wiki/Corona
Beyond a certain temp. it just becomes 'hot', so no effective difference in how fast your ship heats up.
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Still, an O class a much, much higher power density (CNO cycle dominated) than a brown dwarf (little to no fusion, most heat is from gravitational contraction).
Brown dwarf do not have a hot corona as far as I remember. Also it's not just the temperature, but the energy fluence that is important here.
I seriously think that O class and WR stars should be major hazards, stripping shield and hull with their hard UV light and crazy stellar winds.
As in : jump in such system, better have 4 pips to shields and run away fast from the star.
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If you go as close to them as you do with brown dwarfs they will completley toast you for good.
^^This.
I'm talking with a brown dwarf taking up half the screen vs a blue giant taking up half the screen. Try it.
Make both angular diameters the same and try it!
Exactly, I'm glad someone on this thread agrees with me. The radiation you receive from two stars with identical surface temperature is proportional the surface area of the star (a Radius squared function) and inversely proportional to the square of the distance you are from the
star...
Simplifying the geometry (I know, I know) :
1) You have a star with apparent radius (Ra) and the radiation received from it (F)
2) Double your distance from the star it will look half as big (Ra/2) and radiation received will be quartered (F/4).
3) Double the RADIUS of the star but maintain surface temperature so that it looks just like it did in 1, i.e. Ra. and you have quadruple the surface area again, radiating 4 times as much back to radiation of (F).
Therefore, two stars of identical thermal colour (say 3000k) which look identical to the observer, (say Angular Radius 45 degrees) would bombard you with similar levels of radiation (heat).
In other words, hotter stars that look the same size as cooler ones would bombard you with significantly more radiation. "Black Body Radiation" has a T^4 relationship, meaning double the temperature increases radiation 16-fold!
700K and 20,000K are very different surface temperatures with a power 4 relationship means serious radiation.
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Good point about the dwarf stars not having coronae. More surprising is that apparently O-B and A stars don't either - go figure!?
https://en.wikipedia.org/wiki/Corona#Stellar_coronae
The O/B I've met DO have a corona. A very visible one at that. (if it's a matter of graphics settings, I run things ultra/high).
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People keep thinking I'm talking about distance...
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Folks, I'm talking about Angular Diameter. Two stars which appear the same size in the sky and have the same surface temperature will irradiate the observer with similar amounts of radiation (heat) if we ignore corona and sunspot activity, etc. Admittdedly, this case breaks down as one nears the "surface" of the star since the above simplification assumes a flat circle rather than a sphere.
Doesn't matter how much of the screen the star fills up, says nothing about size and distance. Target both stars and compare the distance to each one of them you have as shown by the game.
Thank you.... Real science.
Yes, a Y class is only about 700 kelvin or something stupid like that. (a mere 426 Celcius)
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... shakes head and sighs ... learns how Father Ted felt.
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And Im talking about the LS away from the star
I think he's talking about IRL.
I'm sure FD are using the same modelling of stars regardless of class - I'll rely on physics over FD when it comes to simulation accuracy.
But so long as it looks pretty and somewhat believable, I don't think it matters that much.