RR Lyrae star Comparison Table

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RR Lyrae star comparison table

Subject is an instance of is a kind of has definition

Bailey type RR Lyrae star A classification of RR Lyrae stars according to the shape and amplitude of their light variation

RR Lyr RR Lyrae star An old metal-poor white or yellow-white giant star that pulsates like a Cepheid and therefore varies in brightness. Most RR Lyrae stars have periods of under one day, which is shorter than periods for Cepheids. RR Lyrae stars are also fainter than Cepheids, with absolute magnitudes around +0.7, corresponding to a luminosity about 45 times the Sun's. RR Lyrae stars are excellent distance indicators because they all have nearly the same intrinsic brightness. They take their name from the star RR Lyrae, in the constellation Lyra.

Subject	is an instance of	is a kind of	has definition
Bailey type		RR Lyrae star	A classification of RR Lyrae stars according to the shape and amplitude of their light variation
RR Lyr	RR Lyrae star		An old metal-poor white or yellow-white giant star that pulsates like a Cepheid and therefore varies in brightness. Most RR Lyrae stars have periods of under one day, which is shorter than periods for Cepheids. RR Lyrae stars are also fainter than Cepheids, with absolute magnitudes around +0.7, corresponding to a luminosity about 45 times the Sun's. RR Lyrae stars are excellent distance indicators because they all have nearly the same intrinsic brightness. They take their name from the star RR Lyrae, in the constellation Lyra.

Up: horizontal branch star, periodic variable