Tucana Dwarf Galaxy

E136264

The Tucana Dwarf Galaxy is a faint, isolated dwarf spheroidal galaxy located on the outskirts of the Local Group, notable for its old stellar population and lack of recent star formation.

All labels observed (2)

Label Occurrences
Tucana Dwarf Galaxy canonical 7
Tucana dwarf galaxy 1

How this entity was disambiguated

Statements (47)

Predicate Object
instanceOf dwarf spheroidal galaxy ⓘ
galaxy ⓘ
satellite galaxy ⓘ
belongsTo southern sky ⓘ
discoveredBy H. C. Arp ⓘ
linked to: Halton Arp

R. G. Tifft ⓘ
discoveryYear 1969 ⓘ
hasAbsoluteMagnitudeV about −9.5 ⓘ
hasAlternativeName Tucana Dwarf Spheroidal ⓘ
Tucana dSph ⓘ
hasAngularSize ~15 arcminutes ⓘ
hasApparentMagnitudeV ~15.1 ⓘ
hasClassification isolated dwarf spheroidal of the Local Group ⓘ
hasColor red ⓘ
hasDarkMatterContent dark-matter-dominated ⓘ
hasDeclination −64° 25′ ⓘ
hasDistanceFromEarth ~2.8 million light-years ⓘ
~870 kiloparsecs ⓘ
hasDominantStellarPopulation red giant branch stars ⓘ
hasDominantStellarPopulationAge >8 Gyr ⓘ
hasEnvironment relatively isolated from massive Local Group galaxies ⓘ
hasEscapeEnvironment far from Milky Way and Andromeda ⓘ
hasGalaxyType early-type dwarf ⓘ
hasGasContent gas-poor ⓘ
hasGasPhaseStarFormation absent ⓘ
hasGlobularClusters none known ⓘ
hasHIEmission undetected or extremely weak ⓘ
hasKinematics pressure-supported ⓘ
hasLuminosityClass low-luminosity ⓘ
hasMetallicity low ⓘ
hasMorphologicalType dSph ⓘ
hasNeutralHydrogenContent very low ⓘ
hasRadialVelocity ~+194 km/s (heliocentric) ⓘ
hasRecentStarFormation no ⓘ
hasRightAscension 22h 41m ⓘ
hasShape spheroidal ⓘ
hasStarFormation quiescent ⓘ
hasStarFormationHistory no significant star formation in the last several Gyr ⓘ
hasStarFormationRate negligible ⓘ
hasStellarComponent old, metal-poor stars ⓘ
hasStellarPopulation old ⓘ
hasSurfaceBrightness low ⓘ
isIsolated true ⓘ
locatedIn constellation Tucana ⓘ
locatedOnOutskirtsOf Local Group ⓘ
memberOf Local Group ⓘ
orbits Local Group barycenter ⓘ

How these facts were elicited

Referenced by (8)

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

Local Group → contains → Tucana Dwarf Galaxy ⓘ
LG → containsGalaxy → Tucana Dwarf Galaxy ⓘ
Tucana → contains → Tucana Dwarf Galaxy ⓘ
subject linked to: constellation Tucana
Tucana → notableDeepSkyObject → Tucana Dwarf Galaxy ⓘ
subject linked to: constellation Tucana
Tucana → contains → Tucana Dwarf Galaxy ⓘ
Tucana dSph → alternativeName → Tucana dwarf galaxy ⓘ
linked to: Tucana Dwarf Galaxy
Tucana Dwarf Spheroidal → alternateName → Tucana Dwarf Galaxy ⓘ
R. G. Tifft → discovered → Tucana Dwarf Galaxy ⓘ