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27 Cards in this Set

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What is the lifetime of a low mass star?
100 billion years
What is the lifetime of a solar mass star?
10 billion years
What is the lifetime of a massive star?
1 billion years
What is the lifetime of a very massive star?
1 million years
What is the temperature of the sun?
6,000 kelvin
What is the absolute luminosity of the sun?
1
What is the remnant of a solar mass star?
White Dwarf
What is the remnant of a massive star?
Neutron star
What is the remnant of a very massive star?
Black hole
What is the mass of a white dwarf?
1/10 solar mass
What is the composition of the white dwarf?
Carbon Atoms
What is the size of the white dwarf?
10,000 km about the size of earth
What is the mass of a massive star?
About 10 times the sun's
What is the mass of a neutron star?
1 solar mass
What is the composition of a neutron star?
Neutrons
What is the size of a neutron star?
10 km diameter. About from here to brandon
What is a mass of a very massive star?
About 100 times the sun's
What is the mass of a black hole?
10 solar masses
What is the composition of the black hole?
Who knows
What is the size of the black hole?
Approaching zero
What is the evidence of a solar mass star?
Planetary nebula (a white dwarf at the center of an expanding shell of gas)
What is the evidence of a massive star?
Pulsar (At center of supernova remnant of where a neutron star should be)
What is the evidence of a very massive star?
Binary xray systems (one visible star still remains, the other a black hole drawing its materials inward which emits the xrays)
At what tempertature does hydrogen fusion occur?
10,000,000 degrees
What temperature does helium fusion occur?
100,000,000 degrees
On the diagram, what is the range of temperatures of the main sequence stars?
3,000 to 30,000 degrees kelvin (increasing to the left)
On the diagram, what is the range of absolute luminosity of the main sequence stars?
1/100 to 1,000,000 times our suns