The stellar-physics tag has no wiki summary.
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Predicting stellar evolution and life cycle of a star
Is there a way to model/predict the evolution and life cycle of a star based on certain initial conditions? That is, whether it will become a red giant, brown dwarf, etc. I'm basically looking for ...
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1answer
75 views
Dark Matter and Rotational Velocity Curves of Galaxies and Stellar Systems
The way dark matter is introduced to documentary watchers such as myself is to account for the difference between the rotational velocity of the stars in a galaxy compared to that of planets in ...
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Could micro black holes obey the Eddington limit?
A stellar-mass black hole has recently been discovered in the Andromeda galaxy. One interesting part of the release is that this black hole shines close to its Eddington limit.
Quasars are ...
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1answer
681 views
How can such a high exponent arise in this physics equation?
This site http://what-if.xkcd.com/14/ states that during a helium flash, "the reaction rate is proportional to the 40th power of the temperature".
Taking for granted that this is true, how can ...
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921 views
What is the easiest way to stop a star?
On long enough cosmological time scales, hydrogen and helium nucleii will become scarce in the Universe. It seems to me that any advanced civilisations that might exist in that epoch would have the ...
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How were the heavy elements from iron to uranium made? [duplicate]
Possible Duplicate:
Age of the Earth and the star that preceded the Sun
How were the heavy elements from iron to uranium made?
References: ...
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3answers
292 views
Could a Dyson sphere destroy a star?
Freeman Dyson proposed that the power needs of an advanced civilisation would eventually require the entire energy output of a star to be collected, so that the star would end up surrounded by a ...
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1answer
90 views
What proportion of a star's hydrogen is consumed in its life?
I've heard in a lecture that a star like the sun would burn 3% of its Hydrogen before expiring.
I would have thought it would be much more.
7
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1answer
56 views
What's the most accepted theory for Blue Stragglers These Days?
I'm working on a post against a recent creationism article about blue stragglers. From when I was in undergrad, the general explanation was that they were likely second generation stars within ...
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392 views
The Opera Neutrino Experiment and the Supernova 1987
So this probably stems from my massive ignorance about post-Newtonian physics but the supernova results of 1987 which measured neutrinos arriving 3 hours before the light from the supernova have been ...
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2answers
174 views
Are there formulae for calculating stellar luminosity and effective temperature as a function of age?
Is there a manageable formula or set of formulas or simple algorithms that approximate stellar luminosity and effective temperature (or radius) as a function of stellar age?
I'm aware that accurate ...
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1answer
152 views
Solar neutrino predictions
The solar neutrino problem has been "solved" by discovering that neutrinos have mass and they oscillate. So how accurate are now our predictions about the number and types of solar neutrinos that ...
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1answer
635 views
If Betelgeuse were to go supernova
If Betelgeuse were to go supernova would the sky be twice as bright, or day time extended, depending on what time of year it happened in.
Basically when it does supernova how bright and large will it ...
