Local Group dwarf galaxies
E504050
Local Group dwarf galaxies are small, low-luminosity satellite galaxies gravitationally bound within the Local Group, typically orbiting larger galaxies like the Milky Way and Andromeda.
All labels observed (7)
How this entity was disambiguated
This entity first appeared as the object of triple T5219538 — 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: Local Group dwarf galaxies Context triple: [Andromeda XIII, belongsTo, Local Group dwarf galaxies]
-
A.
Milky Way subgroup
The Milky Way subgroup is the collection of nearby galaxies gravitationally bound to and dominated by the Milky Way within the larger Local Group.
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B.
Andromeda subgroup
The Andromeda subgroup is the collection of galaxies gravitationally bound to and dominated by the Andromeda Galaxy (M31) within the Local Group.
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C.
Sculptor Dwarf Galaxy
The Sculptor Dwarf Galaxy is a faint, spheroidal dwarf galaxy and satellite of the Milky Way, notable for its old, metal-poor stellar population and role in studies of galaxy formation in the Local Group.
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D.
Fornax Dwarf Galaxy
The Fornax Dwarf Galaxy is a small spheroidal satellite galaxy of the Milky Way, notable for its rich population of globular clusters and its membership in the Local Group.
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E.
Carina Dwarf Galaxy
The Carina Dwarf Galaxy is a faint, spheroidal satellite galaxy of the Milky Way located in the Local Group, notable for its low luminosity and predominantly old stellar population.
- 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: Local Group dwarf galaxies Target entity description: Local Group dwarf galaxies are small, low-luminosity satellite galaxies gravitationally bound within the Local Group, typically orbiting larger galaxies like the Milky Way and Andromeda.
-
A.
Milky Way subgroup
The Milky Way subgroup is the collection of nearby galaxies gravitationally bound to and dominated by the Milky Way within the larger Local Group.
-
B.
Sagittarius dwarf galaxy globular cluster system
The Sagittarius dwarf galaxy globular cluster system is a collection of globular star clusters gravitationally bound to and associated with the Sagittarius Dwarf Spheroidal Galaxy, a satellite of the Milky Way.
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C.
Andromeda subgroup
The Andromeda subgroup is the collection of galaxies gravitationally bound to and dominated by the Andromeda Galaxy (M31) within the Local Group.
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D.
Sculptor Dwarf Galaxy
The Sculptor Dwarf Galaxy is a faint, spheroidal dwarf galaxy and satellite of the Milky Way, notable for its old, metal-poor stellar population and role in studies of galaxy formation in the Local Group.
-
E.
Fornax Dwarf Galaxy
The Fornax Dwarf Galaxy is a small spheroidal satellite galaxy of the Milky Way, notable for its rich population of globular clusters and its membership in the Local Group.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
class of astronomical object
ⓘ
dwarf galaxy population ⓘ |
| containsSubtype |
dwarf irregular galaxies
ⓘ
dwarf spheroidal galaxies ⓘ transition-type dwarf galaxies ⓘ ultra-faint dwarf galaxies ⓘ |
| darkMatterToStellarMassRatio | very high compared to larger galaxies ⓘ |
| discoveredBy |
Dark Energy Survey
ⓘ
Pan-STARRS ⓘ
linked to:
Pan-STARRS survey
Sloan Digital Sky Survey ⓘ various optical sky surveys ⓘ |
| environment |
within a few megaparsecs of the Milky Way
ⓘ
within the Local Group virial volume ⓘ |
| formationInfluencedBy |
cosmic reionization
ⓘ
feedback from supernovae ⓘ ram-pressure stripping ⓘ tidal stripping ⓘ |
| gravitationallyBoundTo |
Andromeda Galaxy
ⓘ
Milky Way ⓘ |
| hasCharacteristic |
dominated by dark matter
ⓘ
low luminosity ⓘ low metallicity ⓘ low stellar mass ⓘ low surface brightness ⓘ often gas-poor ⓘ often pressure-supported ⓘ old stellar populations ⓘ small physical size ⓘ some with extended star-formation histories ⓘ |
| includes |
Andromeda satellite galaxies
ⓘ
Milky Way satellite galaxies ⓘ isolated Local Group dwarfs ⓘ |
| kinematics | low velocity dispersions ⓘ |
| observedIn | Local Volume ⓘ |
| orbits |
Andromeda Galaxy
ⓘ
Milky Way ⓘ |
| partOf | Local Group ⓘ |
| spatialDistribution | often aligned in planes around host galaxies ⓘ |
| subjectOf |
missing satellites problem
ⓘ
near-field cosmology studies ⓘ too-big-to-fail problem ⓘ |
| typicalAbsoluteMagnitude | −8 to −14 in V band ⓘ |
| typicalHalfLightRadius | tens to thousands of parsecs ⓘ |
| typicalStellarMass | 10^3 to 10^9 solar masses ⓘ |
| usedFor |
constraining dark matter properties
ⓘ
probing chemical evolution at low metallicity ⓘ studying reionization effects on small galaxies ⓘ studying tidal interactions with massive galaxies ⓘ testing galaxy formation models ⓘ |
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: Local Group dwarf galaxies Description of subject: Local Group dwarf galaxies are small, low-luminosity satellite galaxies gravitationally bound within the Local Group, typically orbiting larger galaxies like the Milky Way and Andromeda.
Referenced by (20)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Local Group dwarf galaxies
linked to: Local Group dwarf galaxies
linked to: Local Group dwarf galaxies
linked to: Local Group dwarf galaxies
linked to: Local Group dwarf galaxies