Subdwarf stars
type: Concept
narrower: O subdwarf stars
narrower: F subdwarf stars
narrower: A subdwarf stars
narrower: G subdwarf stars
narrower: T subdwarfs
narrower: B subdwarf stars
creator: AAS Frey.Katie Admin
contributor: AAS Frey.Katie Admin
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).
broader: Stellar evolutionary types
modified: 2020-11-04T18:47:37.339Z
modified: 2020-11-04T18:47:26.827Z
created: 2018-09-13T17:00:21Z

A subdwarf stars
type: Concept
broader: Subdwarf stars

B subdwarf stars
type: Concept
broader: Subdwarf stars

G subdwarf stars
type: Concept
broader: Subdwarf stars

Stellar evolutionary types
type: Concept
narrower: Subdwarf stars

T subdwarfs
type: Concept
broader: Subdwarf stars

O subdwarf stars
type: Concept
broader: Subdwarf stars

F subdwarf stars
type: Concept
broader: Subdwarf stars