NGC 7538
E109441
NGC 7538 is a massive star-forming nebula in the constellation Cepheus, notable for hosting some of the largest known protostars in the Milky Way.
All labels observed (18)
| Label | Occurrences |
|---|---|
| NGC 7538 canonical | 1 |
| NGC 7538 E | 1 |
| NGC 7538 IRS 1 | 1 |
| NGC 7538 IRS 10 | 1 |
| NGC 7538 IRS 11 | 1 |
| NGC 7538 IRS 12 | 1 |
| NGC 7538 IRS 13 | 1 |
| NGC 7538 IRS 14 | 1 |
| NGC 7538 IRS 2 | 1 |
| NGC 7538 IRS 3 | 1 |
| NGC 7538 IRS 4 | 1 |
| NGC 7538 IRS 5 | 1 |
| NGC 7538 IRS 6 | 1 |
| NGC 7538 IRS 7 | 1 |
| NGC 7538 IRS 8 | 1 |
| NGC 7538 IRS 9 | 1 |
| NGC 7538 N | 1 |
| NGC 7538 S | 1 |
Statements (63)
| Predicate | Object |
|---|---|
| instanceOf |
H II region
ⓘ
emission nebula ⓘ molecular cloud ⓘ star-forming region ⓘ |
| catalog | New General Catalogue ⓘ |
| constellation |
Cassiopeia
ⓘ
surface form:
Cepheus
|
| contains |
NGC 7538
self-linksurface differs
ⓘ
surface form:
NGC 7538 E
NGC 7538 self-linksurface differs ⓘ
surface form:
NGC 7538 IRS 1
NGC 7538 self-linksurface differs ⓘ
surface form:
NGC 7538 IRS 10
NGC 7538 self-linksurface differs ⓘ
surface form:
NGC 7538 IRS 11
NGC 7538 self-linksurface differs ⓘ
surface form:
NGC 7538 IRS 12
NGC 7538 self-linksurface differs ⓘ
surface form:
NGC 7538 IRS 13
NGC 7538 self-linksurface differs ⓘ
surface form:
NGC 7538 IRS 14
NGC 7538 self-linksurface differs ⓘ
surface form:
NGC 7538 IRS 2
NGC 7538 self-linksurface differs ⓘ
surface form:
NGC 7538 IRS 3
NGC 7538 self-linksurface differs ⓘ
surface form:
NGC 7538 IRS 4
NGC 7538 self-linksurface differs ⓘ
surface form:
NGC 7538 IRS 5
NGC 7538 self-linksurface differs ⓘ
surface form:
NGC 7538 IRS 6
NGC 7538 self-linksurface differs ⓘ
surface form:
NGC 7538 IRS 7
NGC 7538 self-linksurface differs ⓘ
surface form:
NGC 7538 IRS 8
NGC 7538 self-linksurface differs ⓘ
surface form:
NGC 7538 IRS 9
NGC 7538 self-linksurface differs ⓘ
surface form:
NGC 7538 N
NGC 7538 self-linksurface differs ⓘ
surface form:
NGC 7538 S
dense molecular cores ⓘ infrared sources ⓘ maser sources ⓘ massive protostars ⓘ ultracompact H II regions ⓘ |
| declination | +61° 30′ ⓘ |
| discoveredBy | William Herschel ⓘ |
| discoveryYear | 1787 ⓘ |
| distanceFromEarth |
approximately 2.8 kiloparsecs
ⓘ
approximately 9100 light-years ⓘ |
| environment |
cold dense molecular gas
ⓘ
strong UV radiation field ⓘ |
| galacticLatitude | +0.78 degrees ⓘ |
| galacticLongitude | 111.54 degrees ⓘ |
| hasFeature |
CO outflows
ⓘ
OH masers ⓘ bipolar molecular outflows ⓘ complex filamentary structure ⓘ dust lanes ⓘ embedded young stellar objects ⓘ methanol masers ⓘ reflection nebula components ⓘ water masers ⓘ |
| hasStarFormation |
clustered star formation
ⓘ
high-mass star formation ⓘ |
| ionizingSource | massive O-type stars ⓘ |
| locatedIn |
Milky Way
ⓘ
Perseus Arm ⓘ |
| notableFor |
hosting some of the largest known protostars in the Milky Way
ⓘ
massive star formation ⓘ |
| observedIn |
infrared wavelengths
ⓘ
radio wavelengths ⓘ submillimeter wavelengths ⓘ |
| partOf | Cepheus OB2 association ⓘ |
| regionType | giant molecular cloud complex ⓘ |
| researchUse |
laboratory for studying maser emission
ⓘ
laboratory for studying massive star formation ⓘ laboratory for studying protostellar evolution ⓘ |
| rightAscension | 23h 13m ⓘ |
| visibleIn | small amateur telescopes under dark skies ⓘ |
Referenced by (18)
Full triples — surface form annotated when it differs from this entity's canonical label.