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Results tagged with star
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user 28360
Questions regarding large spheres of plasma undergoing fusion.
4
votes
2
answers
246
views
Does the density in the core of a "higher mass" star stay generally constant while it evolve...
We know the CNO cycle produces the majority of energy production in a "higher mass star" of approx. over 2 solar masses and the core is convective due to the large temperature gradient. …
- 1,111
0
votes
Does the density in the core of a "higher mass" star stay generally constant while it evolve...
I was able to get some insight from my professor, so I figured I'd answer this question. Basically, convection works AGAINST gravity and keeps the density constant.
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11
votes
2
answers
1k
views
Which stellar properties can we describe as "first principles" in which we can derive the rest?
For fun, if we wanted to describe a star in the most simplistic way possible, which properties would we need to know? … My assumption would be the initial chemical composition when the star was made and its initial mass. …
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6
votes
1
answer
402
views
Why do M dwarfs emit more X-ray radiation than larger, more luminous stars?
I have read that "The relative amount of harmful radiation (to life as we know it) that stars emit can be 80 to 500 times more intense for M dwarfs relative to our Sun". Source This seems counterintui …
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5
votes
1
answer
331
views
Which star has the faintest absolute magnitude (largest magnitude) yet is still visible with...
The Bright Star Catalogue includes all the visible stars from Earth when viewing with the naked eye. … For the sake of this question, let's stick with the faintest absolute magnitude main-sequence star. …
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1
vote
1
answer
159
views
How to approximate the distance at which the thin disk peaks along a given LOS from Earth fo...
J. 100 (4) 1191-1222):
$$ r^2 = R_☉^2 + R^2 - 2 R R_☉ \cos b \cos l $$
screenshot
So, for a given r (distance from star or LOS to sun), l and b, we can find R (the distance from the G.C. to the star or … to sun
R=np.arange(0,15000,1)
#distance from star to G.C. …
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