Barnard's Loop

E132844

H II region astronomical object emission nebula

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.

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All labels observed (4)

Label	Occurrences
Barnard's Loop canonical	1
Barnard's Loop region	1
Barnard’s Loop extension regions	1
Lambda Orionis ring	1

Statements (46)

Predicate	Object
instanceOf	H II region ⓘ astronomical object ⓘ emission nebula ⓘ
ageEstimate	on the order of a few million years ⓘ
angularSize	about 10 degrees ⓘ
appearsAs	large faint arc of nebulosity ⓘ
associatedWith	Barnard's Loop self-linksurface differs ⓘ surface form: Lambda Orionis ring Orion Nebula ⓘ Orion OB association ⓘ surface form: Orion OB1 association Loop I superbubble ⓘ surface form: Orion-Eridanus superbubble
bestSeenIn	long-exposure astrophotography ⓘ
catalogCode	Sh 2-276 ⓘ
composedPrimarilyOf	ionized hydrogen gas ⓘ
contains	filamentary gas structures ⓘ
discoveredBy	Edward Emerson Barnard ⓘ
distanceFromEarth	about 1350 light-years ⓘ about 400 parsecs ⓘ
energySource	past supernova explosions ⓘ stellar winds from massive stars ⓘ
extendsAcross	Orion constellation region around Orion's Belt and Sword ⓘ
hasColor	reddish ⓘ
hasShape	arc ⓘ loop ⓘ
ionizedBy	massive stars in Orion OB1 association ⓘ
isBelievedToBe	remnant of ancient supernova activity ⓘ
isFaintTo	unaided human eye ⓘ
isTypeOf	supernova remnant candidate ⓘ
liesNear	Flame Nebula ⓘ Horsehead Nebula ⓘ Orion Nebula ⓘ surface form: Orion Nebula (M42)
locatedIn	Milky Way ⓘ Orion Arm ⓘ surface form: Orion Arm of the Milky Way
locatedInConstellation	Orion ⓘ
namedAfter	Edward Emerson Barnard ⓘ
observedIn	X-ray wavelengths ⓘ radio wavelengths ⓘ
partOf	Orion Molecular Cloud Complex ⓘ surface form: Orion molecular cloud complex Loop I superbubble ⓘ surface form: Orion-Eridanus superbubble
redColorCausedBy	H-alpha emission from ionized hydrogen ⓘ
requires	dark skies for visual detection ⓘ long exposures for photographic detection ⓘ
spectralType	H-alpha emission ⓘ
visibleFrom	Northern Hemisphere ⓘ Southern Hemisphere ⓘ
visibleIn	H-alpha narrowband imaging ⓘ optical wavelengths ⓘ

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

Orion → hasDeepSkyObject → Barnard's Loop ⓘ

Orion Molecular Cloud Complex → contains → Barnard's Loop ⓘ

this entity surface form: Barnard's Loop region

Monoceros → contains → Barnard's Loop ⓘ

this entity surface form: Barnard’s Loop extension regions

Barnard's Loop → associatedWith → Barnard's Loop self-linksurface differs ⓘ

this entity surface form: Lambda Orionis ring