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11 Cards in this Set
- Front
- Back
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What do the Sun and other stars burn for fuel? How do stars convert mass to energy?
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Hydrogen. Nuclear Fusion.
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Where do stars form?
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Higher density regions of the interstellar medium form clouds, where star formation takes place.
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Planetary Nebula
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The ejected envelope of a red giant star, spread over a volume roughly the size of our solar system.
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Emission Nebula
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A glowing cloud of hot interstellar gas.
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White Dwarf
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A dwarf star with sufficently high surface temperature that it glows white.
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Black Dwarf
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The endpoint of the evolution of an isolated, low-mass star.
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Brown Dwarf
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Fragments of collapsing gas and dust that did not contain enough mass to initiate core nuclear fusion.
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What is a pulsar? How are they detected?
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Object that emits raditation in the form of rapid pulses with a characteristic pulse period and duration. Detected through radio telescopes.
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What is a black hole? How are they detected?
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A region of space where the pull of gravity is so great that nothing can escape. Detected by observing the gravitational effects on other objects nearby.
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What is a supernova? How do the two types differ?
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Explosive death of a star, caused by sudden onset of nuclear burning (Type I), or an enormously energetic shock wave (Type II).
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Hayashi Track
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Evolutionary track followed by a protostar during the final pre-main-sequence phase before nuclear fusion begins.
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