Herbig–Haro objects
E290083
Herbig–Haro objects are small, bright patches of nebulosity formed when jets of gas from newborn stars collide with surrounding interstellar material.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Herbig–Haro objects canonical | 20 |
| Herbig-Haro objects | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2706381 — 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: Herbig–Haro objects Context triple: [Carina Nebula, contains, Herbig–Haro objects]
-
A.
Scorpius–Centaurus OB association
The Scorpius–Centaurus OB association is the nearest large group of young, massive stars to the Sun, spanning the constellations Scorpius and Centaurus and playing a key role in studies of recent star formation in our Galactic neighborhood.
-
B.
Barnard's Loop
Barnard's Loop is a large, faint emission nebula forming a sweeping arc across the constellation Orion, believed to be the remnant of ancient supernova activity.
-
C.
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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D.
Rosette Nebula
The Rosette Nebula is a large, circular emission nebula and active star-forming region located in the Milky Way, notable for its striking rose-like appearance in astrophotography.
-
E.
Perseus OB2 association
Perseus OB2 association is a nearby group of young, massive OB-type stars located in the Perseus constellation region of the Milky Way.
- 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: Herbig–Haro objects Target entity description: Herbig–Haro objects are small, bright patches of nebulosity formed when jets of gas from newborn stars collide with surrounding interstellar material.
-
A.
Scorpius–Centaurus OB association
The Scorpius–Centaurus OB association is the nearest large group of young, massive stars to the Sun, spanning the constellations Scorpius and Centaurus and playing a key role in studies of recent star formation in our Galactic neighborhood.
-
B.
Barnard's Loop
Barnard's Loop is a large, faint emission nebula forming a sweeping arc across the constellation Orion, believed to be the remnant of ancient supernova activity.
-
C.
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.
-
D.
Rosette Nebula
The Rosette Nebula is a large, circular emission nebula and active star-forming region located in the Milky Way, notable for its striking rose-like appearance in astrophotography.
-
E.
Perseus OB2 association
Perseus OB2 association is a nearby group of young, massive OB-type stars located in the Perseus constellation region of the Milky Way.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical object
ⓘ
emission nebula ⓘ shock-excited nebula ⓘ |
| associatedWith |
protostar
ⓘ
star formation regions ⓘ young stellar object ⓘ |
| cataloguedAs |
HH 1
ⓘ
HH 111 ⓘ HH 2 ⓘ HH 34 ⓘ |
| discoveredBy |
George Herbig
ⓘ
Guillermo Haro ⓘ |
| discoveryEpoch | 1950s ⓘ |
| distanceFromEarthRange | hundreds to thousands of light-years ⓘ |
| drivenBy |
accretion disk around young star
ⓘ
magnetohydrodynamic processes ⓘ |
| emits |
H-alpha line
ⓘ
forbidden emission lines ⓘ optical emission lines ⓘ |
| formsWhen | jets of gas from young stars collide with surrounding interstellar material ⓘ |
| foundIn |
molecular cloud
ⓘ
star-forming region ⓘ |
| hasAlternativeName | HH object ⓘ |
| hasEnvironment |
cold molecular gas
ⓘ
dense interstellar medium ⓘ |
| hasMorphology |
bow shock
ⓘ
collimated jet ⓘ knotty structure ⓘ |
| hasPhysicalProcess |
gas ionization
ⓘ
shock wave ⓘ supersonic jet ⓘ |
| isA | small bright patch of nebulosity ⓘ |
| lifetime | about 10,000 years ⓘ |
| locatedNear |
Class I protostar
ⓘ
T Tauri star ⓘ |
| namedAfter |
George Herbig
ⓘ
Guillermo Haro ⓘ |
| observedIn |
infrared wavelengths
ⓘ
optical wavelengths ⓘ radio wavelengths ⓘ |
| occursIn | Milky Way ⓘ |
| oftenAppearsAs | bipolar jet system ⓘ |
| spectralCharacteristic |
strong [N II] emission lines
ⓘ
strong [O I] emission lines ⓘ strong [S II] emission lines ⓘ |
| typicalSize | a few thousand astronomical units ⓘ |
| typicalVelocity | hundreds of kilometers per second ⓘ |
| usedToTrace |
accretion and ejection processes in star formation
ⓘ
outflows from young stars ⓘ |
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: Herbig–Haro objects Description of subject: Herbig–Haro objects are small, bright patches of nebulosity formed when jets of gas from newborn stars collide with surrounding interstellar material.
Referenced by (21)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Herbig–Haro objects
subject linked to:
Taurus molecular cloud complex (projected association)