The distance in parsec of red supergiant star named as Betelgeuse in Orion, when distance in light-years is 640 ly .

Question

Which star in the HR diagram below has the largest radius? 1060 M 10⁰ 10⁰ 10² 6 10 30 M 10 Solar Radi Lifetime 10 yrs 0.1 Solar Radus 30,000 B Centauri Spica 10M MAIN Bellatrix Lifetime B Deneb Rigal 6M Achemar SEQUENCE Lifetime WHITE SUPERGIANTS Canopus Vega 10 Solar Rad Procyon B 10,000 Srius Lifetime DWARFS Alar Arcturus Procyon Polaris 5 M Littine" 10 yrs S 1M Cet AFG 6,000 GIANTS Centauri A Pollux Centaur B Eridan Antares Aldebaran K Betelgeuse Barnard's Star 61 Cyani A 61 Cyani B Lacalle 9352 0.3M Gliese 725 A Gliese 725 8 Wolf 359 Proxima Centauri M Ross 128 DX Cancri 3,000

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Chapter 18, Problem 5E

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The distance in parsec of red supergiant star named as Betelgeuse in Orion, when distance in light-years is 640 ly .

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Which star in the HR diagram below has the largest radius? 1060 M 10⁰ 10⁰ 10² 6 10 30 M 10 Solar Radi Lifetime 10 yrs 0.1 Solar Radus 30,000 B Centauri Spica 10M MAIN Bellatrix Lifetime B Deneb Rigal 6M Achemar SEQUENCE Lifetime WHITE SUPERGIANTS Canopus Vega 10 Solar Rad Procyon B 10,000 Srius Lifetime DWARFS Alar Arcturus Procyon Polaris 5 M Littine" 10 yrs S 1M Cet AFG 6,000 GIANTS Centauri A Pollux Centaur B Eridan Antares Aldebaran K Betelgeuse Barnard's Star 61 Cyani A 61 Cyani B Lacalle 9352 0.3M Gliese 725 A Gliese 725 8 Wolf 359 Proxima Centauri M Ross 128 DX Cancri 3,000

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