File:HR-diag-no-text-2.svg · Wikimedia Commons · See Wikimedia Commons
red supergiant
Sign in to saveAlso known as RSG, M-type supergiant star, red supergiant star
stars with a supergiant luminosity class
Wikidata facts
- Subclass of
- supergiant
- Image
- Artist’s impression of the red supergiant star Antares.jpg
Show 3 more facts
- Commons category
- Red supergiants
- topic's main category
- Category:M-type supergiants
- short name
- RSG
Sources (2)
via Wikidata · CC0
~20 min read
Encyclopedic overview
Red supergiants (RSGs) are stars with a supergiant luminosity class (Yerkes class I) and a stellar classification K or M. They are the largest stars in the universe in terms of volume, although they are not the most massive or luminous. Betelgeuse and Antares A are the brightest and best known red supergiants (RSGs), indeed the only first magnitude red supergiant stars.
Hertzsprung–Russell diagram
Excerpted from Wikipedia’s “red supergiant” article, available under the CC BY-SA 4.0 licence.