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ASTR Final Chapter11

final review

QuestionAnswer
What diagram shows the absolute magnitude (or luminosity) versus the temperature of stars? Hertzsprung-Russell Diagram (H-R)
What technique finds distance by comparing the positions of stars as earth orbits the sun? Parallax Method
What technique finds distance by measuring brightness? Standard-Candles Method
What is luminosity? The amount of energy radiated by the body in one second
What do astronomers use to find the luminosity of stars? Stefan-Boltzmann Law
What is Apparent magnitude? How bright a stars appears to us in the sky
What is absolute magnitude? How bright the star would be at a distance of 10 parsecs from us
Lower the number on Hipparchus' scale means what? Star is brighter
Higher the number on Hipparchus' scale means what? Star is dimmer
What is the magnitude of the sun? -26.5
A star color reveals its surface temperature is a statement from what? Wien's Law
The strip on the H-R diagram that contains most stars Main Sequence stars
What are binary stars? A system in which two stars are in gravitationally bound orbits about their common center of mass
Final stage of lower mass star? White dwarf
Created by: pdoss94