Baade’s star
E94255
Baade’s star is a luminous, variable star in the Andromeda Galaxy notable for its role in Walter Baade’s work refining the cosmic distance scale.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Baade’s star canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T781617 — 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: Baade’s star Context triple: [Walter Baade, hasEponym, Baade’s star]
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A.
Carina Nebula
The Carina Nebula is a vast, active star-forming region in the Milky Way known for its towering gas and dust pillars and dramatic young stellar clusters.
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B.
Baade’s Window
Baade’s Window is a relatively dust-free region of the Milky Way’s central bulge that provides a clear observational “window” for studying the galaxy’s core and its stellar populations.
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C.
Betelgeuse Five
Betelgeuse Five is the fictional home planet of Zaphod Beeblebrox in Douglas Adams' "The Hitchhiker's Guide to the Galaxy" series.
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D.
Milky Way center
The Milky Way center is the dense, energetic core of our galaxy, hosting a supermassive black hole surrounded by stars, gas, and dust.
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E.
Triangulum Galaxy
The Triangulum Galaxy is a nearby spiral galaxy in the Local Group, notable as one of the closest large galaxies to the Milky Way and a companion to the Andromeda Galaxy.
- 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: Baade’s star Target entity description: Baade’s star is a luminous, variable star in the Andromeda Galaxy notable for its role in Walter Baade’s work refining the cosmic distance scale.
-
A.
Carina Nebula
The Carina Nebula is a vast, active star-forming region in the Milky Way known for its towering gas and dust pillars and dramatic young stellar clusters.
-
B.
Baade’s Window
Baade’s Window is a relatively dust-free region of the Milky Way’s central bulge that provides a clear observational “window” for studying the galaxy’s core and its stellar populations.
-
C.
Betelgeuse Five
Betelgeuse Five is the fictional home planet of Zaphod Beeblebrox in Douglas Adams' "The Hitchhiker's Guide to the Galaxy" series.
-
D.
Milky Way center
The Milky Way center is the dense, energetic core of our galaxy, hosting a supermassive black hole surrounded by stars, gas, and dust.
-
E.
Triangulum Galaxy
The Triangulum Galaxy is a nearby spiral galaxy in the Local Group, notable as one of the closest large galaxies to the Milky Way and a companion to the Andromeda Galaxy.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
luminous star
ⓘ
star ⓘ variable star ⓘ |
| astronomicalSignificance |
contributed to revision of the Hubble constant
ⓘ
helped distinguish stellar populations in galaxies ⓘ |
| catalogStatus | not widely used as a standard catalog designation in modern databases ⓘ |
| coordinateFrame | equatorial coordinate system (right ascension and declination) ⓘ |
| discoveredBy | Walter Baade ⓘ |
| distanceScaleRole | served as a key reference object in Baade’s distance-scale work ⓘ |
| epochOfKeyObservations | mid-20th century ⓘ |
| fieldOfStudy |
cosmology
ⓘ
extragalactic astronomy ⓘ stellar astrophysics ⓘ |
| galaxyTypeOfHost | spiral galaxy ⓘ |
| hostGalaxy |
Andromeda Galaxy
ⓘ
surface form:
M31
|
| locatedIn | Andromeda Galaxy ⓘ |
| namedAfter | Walter Baade ⓘ |
| observedIn | optical wavelengths ⓘ |
| partOf | stellar population of the Andromeda Galaxy ⓘ |
| researchContext | study of Cepheids and other variables in Andromeda ⓘ |
| roleInHistoryOfAstronomy |
illustrated existence of distinct stellar populations in galaxies
ⓘ
landmark object in establishing modern extragalactic distance scale ⓘ |
| usedFor |
calibration of extragalactic distances
ⓘ
refinement of the cosmic distance scale ⓘ |
| variabilityType | variable star (specific subtype not well established in literature) ⓘ |
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: Baade’s star Description of subject: Baade’s star is a luminous, variable star in the Andromeda Galaxy notable for its role in Walter Baade’s work refining the cosmic distance scale.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.