A stars

http://astrothesaurus.org/uat/5

alt label
A type stars
A-type stars
Class A stars
Type A stars
dcterms modified equal to or less than 2020-10-26T18:21:38.213Zequal to or more than 2020-10-26T18:21:38.213Z
broader
http://astrothesaurus.org/uat/2051 original
narrower
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http://astrothesaurus.org/uat/430 original
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definition A star whose spectrum shows strong hydrogen Balmer lines accompanied by many faint to moderately strong metallic lines. In contrast to B and O stars, the lines of He I and He II are absent. Their surface temperature ranges from 7,500 to 10,000 K. The main metallic lines seen in A-type stars are those of Fe I and Fe II, Cr I and II, Ti I and II, and account for about two-thirds of all lines. Some famous examples of A star are Sirius, Deneb, Altair, and Vega. Also known as A-type star.
narrower
http://astrothesaurus.org/uat/20 original
broader
5 original
http://astrothesaurus.org/uat/3 original
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http://astrothesaurus.org/uat/33 original
broader
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http://astrothesaurus.org/uat/4 original
broader
5 original
50 original
broader
5 original
http://astrothesaurus.org/uat/6 original
broader
5 original
http://astrothesaurus.org/uat/7 original
broader
5 original
http://astrothesaurus.org/uat/8 original
broader
5 original
type
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contributor AAS_Frey.Katie original