^ http://astrothesaurus.org/uat/5

A stars

Instance information

altLabel

A type stars,Type A stars,Class A stars,A-type stars

broader

http://astrothesaurus.org/uat/430,http://astrothesaurus.org/uat/2051

contributor

http://editor.vocabs.ands.org.au/user/AAS_Frey.Katie

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.

modified

2020-10-26T18:21:50.162Z,2020-10-26T18:21:38.213Z

narrower

http://astrothesaurus.org/uat/50,http://astrothesaurus.org/uat/6,http://astrothesaurus.org/uat/20,http://astrothesaurus.org/uat/4,http://astrothesaurus.org/uat/3,http://astrothesaurus.org/uat/33,http://astrothesaurus.org/uat/8,http://astrothesaurus.org/uat/7

related

http://astrothesaurus.org/uat/1589

Instance relations

Types