Subdwarf O star | Wikipedia audio article
Channel: wikipedia tts
Date: 04/10/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Subdwarf_O_star


00:00:44 1 Structure
00:01:08 2 History
00:01:42 3 Occurrence
00:01:59 4 Spectrum
00:02:42 5 Examples
00:03:24 6 Life cycle



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Voice name: en-US-Wavenet-F


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SUMMARY
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A subdwarf O star (sdO) is a type of hot, but low-mass star. O-type subdwarfs are much dimmer than regular O-type main-sequence stars, but with a brightness about 10 to 100 times that of the Sun, and have a mass approximately half that of the Sun. Their temperature ranges from 40,000 to 100,000 K. Ionized helium is prominent in their spectra. Gravity acceleration is expressed by log g between 4.0 and 6.5. Many sdO stars are moving at high velocity through the Milky Way and are found at high galactic latitudes.