Energy Source of the Sun
Energy per time
What is power?
The power output of a star.
What is luminosity?
It is a round letter describing the hottest stars.
Plots luminosity versus temperature.
What is the HR diagram?
The energy source of the Sun.
What is fusion?
Makes the luminosity dimmer when seen at a distance.
What is brightness?
It will tell you with a shift if a star is running from you and even how fast it is rotating!
What is the Doppler effect?
They are the top left corner of the HR diagram.
What is massive and luminous stars?
It takes at least 100,000 years to escape the Sun.
What is a photon.
It is brightness multiplied by 4 pi distance squared.
B*4pid^2
What is luminosity?
Up to 85% of the stars are in this kind of system.
What is binary star systems?
Fusion in the core of a star stops at this element.
What is iron?
Keeps all layers of the Sun balanced.
What is hydrostatic equilibrium?
It is a measure of brightness and goes backwards!
What is magnitude?
It states that the more massive the more luminous.
What is the mass-luminosity relation?
They are burning hydrogen for some time.
What are main sequence stars?
This scientific field allows us to study the inside of the Sun through the surface vibrations.
What is heliosesmology?
Subtracting 2 magnitudes in the UBV photometric system gives us this.
What is color index?
They are the grounds for the spectral classification of stars.
What is hydrogen absorption lines?
The red giant stars in this branch are about to die.
What is asymptotic red giant branch?
In five billion years this star will eject about 50% of its mass and become a White Dwarf.
What is the Sun?