Concept information
Preferred term
Subdwarf stars
Definition
- A metal-poor main-sequence star with spectral type later than M7 and luminosity class VI. They are population II dwarfs which appear less luminous than their solar metallicity counterparts due to the dearth of metals in their atmospheres. Subdwarfs are halo members with high proper motions and large heliocentric velocities. They are important tracers of the chemical enrichment history of the Galaxy and belong to the first generation of stars formed in the Galaxy (at least 10 billion years old). (en)
Broader concept
Narrower concepts
- A subdwarf stars (en)
- B subdwarf stars (en)
- F subdwarf stars (en)
- G subdwarf stars (en)
- O subdwarf stars (en)
- T subdwarfs (en)
URI
http://astrothesaurus.org/uat/2054
{{label}}
{{#each values }} {{! loop through ConceptPropertyValue objects }}
{{#if prefLabel }}
{{/if}}
{{/each}}
{{#if notation }}{{ notation }} {{/if}}{{ prefLabel }}
{{#ifDifferentLabelLang lang }} ({{ lang }}){{/ifDifferentLabelLang}}
{{#if vocabName }}
{{ vocabName }}
{{/if}}