Leading Arm of the Magellanic System
E481656
The Leading Arm of the Magellanic System is a vast stream of gas pulled from the Magellanic Clouds that extends ahead of their orbit around the Milky Way, helping astronomers study galaxy interactions and gas accretion.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| Leading Arm of Magellanic System | 1 |
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
astrophysical structure
ⓘ
gaseous stream ⓘ high‑velocity cloud complex ⓘ |
| associatedWith |
Large Magellanic Cloud
NERFINISHED
ⓘ
Small Magellanic Cloud NERFINISHED ⓘ |
| classification | component of the Magellanic gaseous debris ⓘ |
| composedOf |
ionized gas
ⓘ
neutral hydrogen gas ⓘ |
| contains |
cold neutral gas
ⓘ
multiple gas clumps and filaments ⓘ warm ionized gas ⓘ |
| coordinateSystem | often described in Magellanic coordinates ⓘ |
| directionRelativeToMagellanicClouds | leading ⓘ |
| discoveredThrough | H I 21‑cm surveys of the Galactic halo ⓘ |
| environment | low‑metallicity halo environment ⓘ |
| extendsAheadOf | orbit of the Magellanic Clouds around the Milky Way ⓘ |
| extendsOver | tens of degrees on the sky ⓘ |
| frameOfReference | Milky Way rest frame NERFINISHED ⓘ |
| gasFlowDirection | toward the Milky Way disk ⓘ |
| gasPhase | multi‑phase medium ⓘ |
| hasKinematics | distinct from the Magellanic Stream ⓘ |
| hasRole | source of future star‑forming material for the Milky Way ⓘ |
| hasUncertain | exact origin and formation mechanism ⓘ |
| helpsConstrain |
mass distribution of the Milky Way halo
ⓘ
orbital history of the Magellanic Clouds ⓘ |
| helpsTest | models of the Magellanic Clouds’ first infall scenario ⓘ |
| interactsWith | Milky Way halo gas ⓘ |
| isAsymmetricWithRespectTo | Magellanic Stream NERFINISHED ⓘ |
| locatedIn | Galactic halo of the Milky Way NERFINISHED ⓘ |
| metallicityRelativeToMilkyWayDisk | sub‑solar ⓘ |
| observationalChallenge | confusion with other high‑velocity clouds ⓘ |
| observedIn |
radio wavelengths
ⓘ
ultraviolet absorption lines ⓘ |
| originatesFrom |
ram‑pressure stripping by the Milky Way halo gas
ⓘ
tidal interactions between the Magellanic Clouds and the Milky Way ⓘ |
| partOf |
Magellanic System
NERFINISHED
ⓘ
Magellanic gaseous system NERFINISHED ⓘ |
| relatedPhenomenon |
gas accretion onto galaxies
ⓘ
tidal stripping in galaxy groups ⓘ |
| relatedTo | Magellanic Stream NERFINISHED ⓘ |
| studiedBy | radio surveys of the southern sky ⓘ |
| subjectOf | numerical simulations of the Magellanic System ⓘ |
| tracedBy | 21‑cm H I emission ⓘ |
| usedFor |
probing the Milky Way circumgalactic medium
ⓘ
studying galaxy interactions ⓘ studying gas accretion onto the Milky Way ⓘ |
| velocityType | high‑velocity gas relative to the Galactic disk ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Leading Arm of Magellanic System