Milky Way dark matter halo
E481640
The Milky Way dark matter halo is the vast, roughly spherical, invisible mass of dark matter surrounding our galaxy that dominates its gravitational potential and governs the motions of its stars, gas, and satellite galaxies.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Milky Way dark matter halo canonical | 2 |
| Milky Way mass distribution | 1 |
| Milky Way tidal field | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4943415 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Milky Way dark matter halo Context triple: [LMC, influences, Milky Way dark matter halo]
-
A.
Milky Way stellar halo
The Milky Way stellar halo is a vast, diffuse, roughly spherical population of old, metal-poor stars and dark matter that surrounds the Milky Way’s disk and bulge, extending far into its outer regions.
-
B.
Milky Way globular cluster system
The Milky Way globular cluster system is the population of ancient, densely packed star clusters that orbit the Milky Way’s halo and bulge, serving as key tracers of the galaxy’s formation and evolution.
-
C.
Galactic thin disk
The Galactic thin disk is the relatively flat, rotating component of the Milky Way where most of its young to middle-aged stars, gas, and spiral arms are concentrated.
-
D.
Canis Major Overdensity
The Canis Major Overdensity is a debated stellar overdensity near the plane of the Milky Way, often interpreted as either the remnant core of a disrupted dwarf galaxy or a warp/flare feature of the Galactic disk.
-
E.
Galactic rotation
Galactic rotation is the large-scale orbital motion of stars and gas around the center of a galaxy, revealing its mass distribution and the presence of dark matter.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Milky Way dark matter halo Target entity description: The Milky Way dark matter halo is the vast, roughly spherical, invisible mass of dark matter surrounding our galaxy that dominates its gravitational potential and governs the motions of its stars, gas, and satellite galaxies.
-
A.
Milky Way stellar halo
The Milky Way stellar halo is a vast, diffuse, roughly spherical population of old, metal-poor stars and dark matter that surrounds the Milky Way’s disk and bulge, extending far into its outer regions.
-
B.
Milky Way globular cluster system
The Milky Way globular cluster system is the population of ancient, densely packed star clusters that orbit the Milky Way’s halo and bulge, serving as key tracers of the galaxy’s formation and evolution.
-
C.
Galactic thin disk
The Galactic thin disk is the relatively flat, rotating component of the Milky Way where most of its young to middle-aged stars, gas, and spiral arms are concentrated.
-
D.
Canis Major Overdensity
The Canis Major Overdensity is a debated stellar overdensity near the plane of the Milky Way, often interpreted as either the remnant core of a disrupted dwarf galaxy or a warp/flare feature of the Galactic disk.
-
E.
Galactic rotation
Galactic rotation is the large-scale orbital motion of stars and gas around the center of a galaxy, revealing its mass distribution and the presence of dark matter.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
astrophysical structure
ⓘ
dark matter halo ⓘ |
| affects |
formation of stellar streams
ⓘ
orbital decay of satellite galaxies ⓘ stability of Milky Way disk ⓘ |
| contains |
Local Group satellite galaxies
ⓘ
dark matter subhalos ⓘ dwarf spheroidal galaxies ⓘ |
| contributesTo | flat rotation curve of Milky Way ⓘ |
| detectedBy | gravitational effects ⓘ |
| doesNotInteractVia |
electromagnetic force
ⓘ
strong nuclear force ⓘ |
| dominates | Milky Way gravitational potential NERFINISHED ⓘ |
| enclosesMassWithin | ~200 kiloparsecs ⓘ |
| extendsBeyond |
Milky Way stellar disk
NERFINISHED
ⓘ
Milky Way visible matter distribution NERFINISHED ⓘ |
| formedFrom | cold dark matter (in standard cosmology) ⓘ |
| formedThrough | hierarchical structure formation ⓘ |
| governs |
motions of Milky Way gas
ⓘ
motions of Milky Way satellite galaxies ⓘ motions of Milky Way stars ⓘ |
| hasCentralRegion | inner halo ⓘ |
| hasComponent | dark matter ⓘ |
| hasDensityProfile | decreasing with radius ⓘ |
| hasMass | on the order of 10^12 solar masses ⓘ |
| hasOuterRegion | outer halo ⓘ |
| hasShape | roughly spherical ⓘ |
| hasVirialMass | approximately 0.5–2 × 10^12 solar masses ⓘ |
| hasVirialRadius | approximately 200–300 kiloparsecs ⓘ |
| inferredFrom |
dynamics of globular clusters
ⓘ
galactic rotation curve ⓘ motions of satellite galaxies ⓘ stellar halo kinematics ⓘ tidal streams ⓘ |
| interactsVia | gravity ⓘ |
| isDominantMassComponentOf | Milky Way NERFINISHED ⓘ |
| isInvisibleIn | electromagnetic spectrum ⓘ |
| isMemberOf | Local Group dark matter halo population ⓘ |
| isStudiedIn |
cosmology
ⓘ
dark matter indirect detection ⓘ galactic dynamics ⓘ |
| mayBe |
oblate
ⓘ
prolate ⓘ slightly triaxial ⓘ |
| oftenModeledWith |
Einasto profile
NERFINISHED
ⓘ
Navarro–Frenk–White profile NERFINISHED ⓘ |
| partOf | Milky Way NERFINISHED ⓘ |
| providesEnvironmentFor | baryonic galaxy formation ⓘ |
| weaklyInteractsVia | weak nuclear force (hypothetical) ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Milky Way dark matter halo Description of subject: The Milky Way dark matter halo is the vast, roughly spherical, invisible mass of dark matter surrounding our galaxy that dominates its gravitational potential and governs the motions of its stars, gas, and satellite galaxies.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Milky Way mass distribution
this entity surface form:
Milky Way tidal field