Supergiant star | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-10-04

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Supergiant_star


00:00:25 1 Definition
00:01:14 1.1 Spectral luminosity class
00:03:42 1.2 Evolutionary supergiants
00:05:19 1.3 Categorisation of evolved stars
00:10:57 2 Properties
00:12:28 2.1 Surface gravity
00:13:26 2.2 Temperature
00:14:53 2.3 Luminosity
00:19:10 2.4 Variability
00:21:42 2.5 Chemical abundances
00:23:39 3 Evolution
00:27:17 4 Supernova progenitors
00:28:41 5 Well known examples
00:29:37 6 See also



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SUMMARY
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Supergiants are among the most massive and most luminous stars. Supergiant stars occupy the top region of the Hertzsprung–Russell diagram with absolute visual magnitudes between about −3 and −8. The temperature range of supergiant stars spans from about 3,450 K to over 20,000 K.