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AST 203 > Galaxy clusters > Flashcards

Galaxy clusters Flashcards

1
Q

local group

A

loose galaxy cluster (includes milky way)

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2
Q

gravitational lensing

A

general relativity - light bends due to massive objects in path

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3
Q

tully fisher relation

A

relation between 21 cm line and luminosity of galaxy

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4
Q

cosmological redshift

A

distance proportional to velocity

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5
Q

great attractor

A

local group moving towards virgo cluster - virgo cluster moving towards even bigger cluster

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AST 203 (12 decks)

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