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Astronomy (orbital + HR) templates

Physics — H-R Diagram: Cepheid Variables

Pulsating standard-candle stars on the instability strip.

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Cepheid variables on the H-R diagramTemperature (K, log, reversed)Luminosity (L☉, log)30000K10000K6000K3700K2500K10^610^310^010^-3Main sequenceDelta CepheiPolarisRR LyraeEta AquilaeSun (reference)

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title "Cepheid variables on the H-R diagram"
type hr
star "Delta Cephei" temp 6800 lum 2000 class F
star "Polaris" temp 6015 lum 2500 class F
star "RR Lyrae" temp 7000 lum 50 class A
star "Eta Aquilae" temp 6000 lum 3000 class F
star "Sun (reference)" temp 5778 lum 1 class G