Barnard 1
E476467
Barnard 1 is a dense, star-forming dark cloud within the Perseus molecular cloud complex, known as a site of low-mass stellar and protostellar formation.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Barnard 1 canonical | 2 |
| Barnard B1 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4885966 — 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: Barnard 1 Context triple: [Perseus molecular cloud complex, containsRegion, Barnard 1]
-
A.
Barnard 33
Barnard 33, commonly known as the Horsehead Nebula, is a small dark nebula in the constellation Orion whose distinctive horse-head shape is silhouetted against the bright emission nebula IC 434.
-
B.
Caldwell 14
Caldwell 14 is an open star cluster in the constellation Perseus, forming part of the famous Double Cluster visible to the naked eye in dark skies.
-
C.
Trumpler 15
Trumpler 15 is a young, compact open star cluster located within the Carina Nebula, notable for its massive, hot stars and role in the region’s intense stellar activity.
-
D.
Trumpler 14
Trumpler 14 is a very young, massive open star cluster in the Carina Nebula, notable for containing some of the most luminous and hottest known stars in the Milky Way.
-
E.
Trumpler 16
Trumpler 16 is a massive young star cluster in the Carina Nebula, notable for hosting some of the most luminous and massive known stars, including Eta Carinae.
- 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: Barnard 1 Target entity description: Barnard 1 is a dense, star-forming dark cloud within the Perseus molecular cloud complex, known as a site of low-mass stellar and protostellar formation.
-
A.
Barnard 33
Barnard 33, commonly known as the Horsehead Nebula, is a small dark nebula in the constellation Orion whose distinctive horse-head shape is silhouetted against the bright emission nebula IC 434.
-
B.
Caldwell 14
Caldwell 14 is an open star cluster in the constellation Perseus, forming part of the famous Double Cluster visible to the naked eye in dark skies.
-
C.
Trumpler 15
Trumpler 15 is a young, compact open star cluster located within the Carina Nebula, notable for its massive, hot stars and role in the region’s intense stellar activity.
-
D.
Trumpler 14
Trumpler 14 is a very young, massive open star cluster in the Carina Nebula, notable for containing some of the most luminous and hottest known stars in the Milky Way.
-
E.
Trumpler 16
Trumpler 16 is a massive young star cluster in the Carina Nebula, notable for hosting some of the most luminous and massive known stars, including Eta Carinae.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
dark nebula
ⓘ
molecular cloud core ⓘ star-forming region ⓘ |
| cataloguedIn | Barnard Catalogue of Dark Markings in the Sky ⓘ |
| contains |
Herbig–Haro objects
ⓘ
dense cores ⓘ embedded young stellar objects ⓘ filamentary structures ⓘ molecular outflows ⓘ |
| distanceFromEarth |
about 300 light-years
ⓘ
about 90 parsecs ⓘ |
| hasAgeCharacteristic | contains very young stellar objects ⓘ |
| hasAlternativeName |
B1
ⓘ
Barnard B1 ⓘ
linked to:
Barnard 1
|
| hasDustComponent | interstellar dust ⓘ |
| hasEnvironment | low-mass star-forming environment ⓘ |
| hasGasComponent |
carbon monoxide
ⓘ
molecular hydrogen ⓘ |
| hasObservationFacility |
observed by IRAM telescopes
ⓘ
observed by JCMT ⓘ observed by Spitzer Space Telescope ⓘ |
| hasPhysicalProperty |
cold temperature
ⓘ
high dust extinction ⓘ high gas density ⓘ |
| hasResearchUse |
laboratory for studying dense core chemistry
ⓘ
laboratory for studying early stages of star formation ⓘ laboratory for studying protostellar evolution ⓘ |
| hasStarFormation |
Class 0 protostars
ⓘ
Class I protostars ⓘ pre-main-sequence stars ⓘ protostellar objects ⓘ |
| hasStarFormationActivity | ongoing ⓘ |
| hasStarFormationType | low-mass star formation ⓘ |
| isPartOf |
Perseus star-forming complex
ⓘ
linked to:
Perseus molecular cloud complex
|
| isTypeOfRegion | low-mass star-forming dark cloud ⓘ |
| locatedIn |
Gould Belt
ⓘ
Milky Way ⓘ |
| locatedInConstellation | Perseus ⓘ |
| namedAfter | Edward Emerson Barnard ⓘ |
| observedIn |
infrared wavelengths
ⓘ
millimeter wavelengths ⓘ submillimeter wavelengths ⓘ |
| partOf | Perseus molecular cloud complex ⓘ |
| tracedByMolecule |
CO
ⓘ
CS ⓘ HCO+ ⓘ N2H+ ⓘ NH3 ⓘ |
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: Barnard 1 Description of subject: Barnard 1 is a dense, star-forming dark cloud within the Perseus molecular cloud complex, known as a site of low-mass stellar and protostellar formation.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Barnard 1