Yerkes galaxy classification
E902179
Yerkes galaxy classification is a detailed system for categorizing galaxies based on their spectral and photometric properties, expanding on earlier morphological schemes to incorporate stellar population and luminosity characteristics.
Statements (32)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical classification scheme
ⓘ
galaxy classification system ⓘ |
| aimsTo | provide more physical galaxy classification than purely morphological schemes ⓘ |
| basedOn |
galaxy luminosity characteristics
ⓘ
photometric properties of galaxies ⓘ spectral properties of galaxies ⓘ stellar population characteristics ⓘ |
| considers |
emission-line strengths
ⓘ
galaxy luminosity distribution ⓘ integrated light of galaxies ⓘ overall galaxy color ⓘ spectral absorption features ⓘ |
| developedAt | Yerkes Observatory NERFINISHED ⓘ |
| distinguishes |
galaxies by photometric type
ⓘ
galaxies by spectral type ⓘ galaxies by stellar population mix ⓘ |
| expandsOn |
Hubble galaxy classification
NERFINISHED
ⓘ
morphological galaxy classification schemes ⓘ |
| field |
astrophysics
ⓘ
extragalactic astronomy ⓘ |
| focusesOn |
luminosity class of galaxies
ⓘ
population I and population II stars in galaxies ⓘ stellar content of galaxies ⓘ |
| relatedTo |
Hubble sequence
NERFINISHED
ⓘ
Morgan–Keenan stellar classification NERFINISHED ⓘ |
| usedFor |
comparing stellar populations in different galaxies
ⓘ
linking galaxy morphology with stellar content ⓘ studying galaxy evolution ⓘ |
| usesCriterion |
bulge-to-disk light ratio
ⓘ
galaxy color indices ⓘ integrated galaxy spectrum ⓘ surface brightness distribution ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.