de Vaucouleurs system of galaxy classification
E902178
The de Vaucouleurs system of galaxy classification is an extended and more detailed refinement of the Hubble scheme that categorizes galaxies using a three-dimensional notation incorporating features such as bars, rings, and spiral arm structure.
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical classification scheme
ⓘ
galaxy morphological classification system ⓘ |
| alsoKnownAs |
de Vaucouleurs revised Hubble system
NERFINISHED
ⓘ
de Vaucouleurs revised Hubble–Sandage system NERFINISHED ⓘ |
| basedOn | Hubble sequence NERFINISHED ⓘ |
| capturesFeature |
inner rings
ⓘ
outer rings ⓘ pseudo-rings ⓘ |
| classifiesBy |
bulge-to-disk ratio
ⓘ
degree of arm winding ⓘ lens components ⓘ presence of bar ⓘ ring structures ⓘ spiral arm structure ⓘ |
| developedBy | Gérard de Vaucouleurs NERFINISHED ⓘ |
| dimensionIncludes |
family
ⓘ
stage ⓘ variety ⓘ |
| distinguishes |
strongly barred spirals
ⓘ
unbarred spirals ⓘ weakly barred spirals ⓘ |
| extends | Hubble tuning fork diagram NERFINISHED ⓘ |
| field |
extragalactic astronomy
ⓘ
galaxy morphology ⓘ |
| goal | provide more detailed description of galaxy morphology ⓘ |
| includes |
barred spiral galaxies
ⓘ
elliptical galaxies ⓘ irregular galaxies ⓘ lenticular galaxies ⓘ spiral galaxies ⓘ |
| influenced |
RC2 galaxy catalog classifications
ⓘ
RC3 galaxy catalog classifications NERFINISHED ⓘ |
| introducedIn | mid-20th century ⓘ |
| namedAfter | Gérard de Vaucouleurs NERFINISHED ⓘ |
| notationExample |
(r)
ⓘ
(rs) ⓘ (s) ⓘ SA ⓘ SAB ⓘ SB ⓘ a ⓘ b ⓘ c ⓘ d ⓘ e ⓘ |
| refines | Hubble galaxy classification scheme NERFINISHED ⓘ |
| supports | continuous sequence of galaxy types ⓘ |
| usedIn | cataloging nearby galaxies ⓘ |
| uses | three-dimensional notation ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
Hubble sequence of galaxy classification
→
inspired
→
de Vaucouleurs system of galaxy classification
ⓘ