Bok globules
E476477
Bok globules are small, dense, and dark interstellar clouds of gas and dust that often serve as sites of early star formation.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Bok globules canonical | 3 |
| Bok globule | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4886129 — 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: Bok globules Context triple: [NGC 281, contains, Bok globules]
-
A.
Scutum Star Cloud
The Scutum Star Cloud is a dense, bright region of the Milky Way in the constellation Scutum, rich in stars, clusters, and interstellar material.
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B.
Merope Nebula
The Merope Nebula is a bright reflection nebula in the Pleiades star cluster, illuminated by and surrounding the hot blue star Merope in the constellation Taurus.
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C.
Jewel Box cluster
The Jewel Box cluster is a bright and colorful open star cluster in the constellation Crux, renowned for its striking mix of blue and red stars visible even in small telescopes.
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D.
Sagittarius Star Cloud
The Sagittarius Star Cloud is a bright, densely populated region of the Milky Way rich in stars and nebulae, prominently visible in the constellation Sagittarius.
-
E.
Ring Nebula
The Ring Nebula is a famous planetary nebula in the constellation Lyra, known for its bright, ring-shaped shell of ionized gas surrounding a hot central white dwarf.
- 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: Bok globules Target entity description: Bok globules are small, dense, and dark interstellar clouds of gas and dust that often serve as sites of early star formation.
-
A.
Scutum Star Cloud
The Scutum Star Cloud is a dense, bright region of the Milky Way in the constellation Scutum, rich in stars, clusters, and interstellar material.
-
B.
Merope Nebula
The Merope Nebula is a bright reflection nebula in the Pleiades star cluster, illuminated by and surrounding the hot blue star Merope in the constellation Taurus.
-
C.
Jewel Box cluster
The Jewel Box cluster is a bright and colorful open star cluster in the constellation Crux, renowned for its striking mix of blue and red stars visible even in small telescopes.
-
D.
Sagittarius Star Cloud
The Sagittarius Star Cloud is a bright, densely populated region of the Milky Way rich in stars and nebulae, prominently visible in the constellation Sagittarius.
-
E.
Ring Nebula
The Ring Nebula is a famous planetary nebula in the constellation Lyra, known for its bright, ring-shaped shell of ionized gas surrounding a hot central white dwarf.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical object
ⓘ
dark nebula ⓘ interstellar cloud ⓘ |
| appearance | small dark patches against bright nebular backgrounds ⓘ |
| associatedWith | early stages of star formation ⓘ |
| blocks | background starlight ⓘ |
| canCollapseToForm |
binary star systems
ⓘ
low-mass stars ⓘ protostars ⓘ |
| classification | smallest type of dark molecular cloud ⓘ |
| composedOf |
dust
ⓘ
helium ⓘ molecular hydrogen ⓘ |
| contains |
complex organic molecules in some cases
ⓘ
gas ⓘ interstellar dust ⓘ molecules such as CO ⓘ |
| density | much higher than typical diffuse interstellar clouds ⓘ |
| discoveredBy | Bart Bok ⓘ |
| discoveryDate | 1940s ⓘ |
| environment | often embedded in larger molecular cloud complexes ⓘ |
| evolvesInto | young stellar objects when collapse occurs ⓘ |
| exampleLocation |
Coalsack Nebula region
ⓘ
Horsehead Nebula region ⓘ
linked to:
Horsehead Nebula
IC 2944 ⓘ |
| feature | sharp edges against bright nebular backgrounds ⓘ |
| foundIn |
H II regions
ⓘ
star-forming regions ⓘ |
| location |
interstellar medium
ⓘ
molecular clouds ⓘ |
| namedAfter | Bart Bok ⓘ |
| observationalChallenge | high extinction makes internal structure hard to observe in visible light ⓘ |
| observedIn |
infrared wavelengths for embedded protostars
ⓘ
optical wavelengths as dark silhouettes ⓘ radio wavelengths for molecular line emission ⓘ |
| property |
high density compared to surrounding interstellar medium
ⓘ
low temperature ⓘ |
| roleInAstrophysics |
laboratories for studying low-mass star formation
ⓘ
sites of isolated star formation ⓘ |
| shape |
irregular
ⓘ
roughly spherical ⓘ |
| stability | can be gravitationally bound ⓘ |
| studiedUsing |
infrared space telescopes
ⓘ
millimeter-wave telescopes ⓘ |
| surfaceBrightness | very low ⓘ |
| typicalMass | about 2 to 50 solar masses ⓘ |
| typicalSize | about 1 light year across or less ⓘ |
| typicalTemperature | about 10 Kelvin ⓘ |
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: Bok globules Description of subject: Bok globules are small, dense, and dark interstellar clouds of gas and dust that often serve as sites of early star formation.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.