|
gptkbp:instanceOf
|
gptkb:galaxy
|
|
gptkbp:armPopulation
|
Younger stars
|
|
gptkbp:bulgePopulation
|
Older stars
|
|
gptkbp:canMerge
|
Yes
|
|
gptkbp:class
|
gptkb:Edwin_Hubble
Hubble Sequence
|
|
gptkbp:color
|
Blue in arms, yellow in bulge
|
|
gptkbp:contains
|
gptkb:Stars
gptkb:gasoline
gptkb:Dark_Matter
Dust
Globular Clusters
Planetary Nebulae
Supernova Remnants
Open Star Clusters
|
|
gptkbp:diameter
|
10,000 to 300,000 light-years
|
|
gptkbp:discoveredBy
|
gptkb:William_Parsons
|
|
gptkbp:discoveredIn
|
1845
|
|
gptkbp:distanceFromEarth
|
Varies
|
|
gptkbp:evolvesFrom
|
Elliptical Galaxy
|
|
gptkbp:example
|
gptkb:Whirlpool_Galaxy
gptkb:Milky_Way
gptkb:Andromeda_Galaxy
|
|
gptkbp:hasBar
|
Sometimes
|
|
gptkbp:hasComponent
|
gptkb:Halo
Disk
Central Bulge
Spiral Arms
|
|
gptkbp:hasDarkMatterEvidence
|
Yes
|
|
gptkbp:hasFeature
|
Spiral structure
|
|
gptkbp:hasInterstellarMedium
|
Yes
|
|
gptkbp:hasRotationCurve
|
Flat
|
|
gptkbp:hasSupermassiveBlackHole
|
Usually in center
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Spiral Galaxy
|
|
gptkbp:location
|
gptkb:Universe
|
|
gptkbp:magneticFieldStrength
|
Yes
|
|
gptkbp:observedBy
|
Optical Telescope
Radio Telescope
|
|
gptkbp:percentageOfGalaxies
|
~60% of galaxies
|
|
gptkbp:range
|
10^9 to 10^12 solar masses
|
|
gptkbp:redshift
|
Varies
|
|
gptkbp:rotationPeriod
|
Differential
|
|
gptkbp:satellite_galaxies
|
Often
|
|
gptkbp:shape
|
Flat, rotating disk
|
|
gptkbp:starFormation
|
Active in arms
|
|
gptkbp:studiedIn
|
Extragalactic Astronomy
|
|
gptkbp:subclassOf
|
Barred Spiral Galaxy
Intermediate Spiral Galaxy
Unbarred Spiral Galaxy
|
|
gptkbp:bfsParent
|
gptkb:Radio_Galaxy
|
|
gptkbp:bfsLayer
|
7
|