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 | 5 |
| Herbig-Haro objects | 1 |
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 ⓘ |
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Herbig-Haro objects