Statements (23)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
astronomical structure
|
| gptkbp:characterizedBy |
older stars
greater scale height higher velocity dispersion lower metallicity |
| gptkbp:component |
galactic disk
|
| gptkbp:contains |
gptkb:Population_II_stars
|
| gptkbp:discoveredBy |
gptkb:Gilmore_and_Reid
|
| gptkbp:discoveredIn |
1983
|
| gptkbp:distinctiveFeature |
gptkb:galactic_thin_disk
|
| gptkbp:formationTheory |
accretion of satellite galaxies
heating of thin disk merger events |
| https://www.w3.org/2000/01/rdf-schema#label |
galactic thick disk
|
| gptkbp:location |
above and below galactic plane
|
| gptkbp:metallicity |
[Fe/H] ≈ -0.6
|
| gptkbp:partOf |
gptkb:Milky_Way
|
| gptkbp:rotationPeriod |
slower than thin disk
|
| gptkbp:scaleHeight |
~1 kpc
|
| gptkbp:stellarAge |
8-12 billion years
|
| gptkbp:studiedIn |
galactic archaeology
|
| gptkbp:bfsParent |
gptkb:subdwarf
|
| gptkbp:bfsLayer |
7
|