Main sequence (Hertzsprung–Russell diagram)

URI: https://gptkb.org/entity/Main_sequence_(Hertzsprung–Russell_diagram)
GPTKB entity
Statements (23)
Predicate Object
gptkbp:instanceOf stellar classification
gptkbp:characterizedBy hydrogen fusion in core
gptkbp:composedOf main-sequence stars
gptkbp:discoveredBy gptkb:Henry_Norris_Russell
gptkb:Ejnar_Hertzsprung
gptkbp:endDate hydrogen exhaustion in core
gptkbp:firstDescribed early 20th century
https://www.w3.org/2000/01/rdf-schema#label Main sequence (Hertzsprung–Russell diagram)
gptkbp:includes Sun
gptkbp:locationOnDiagram diagonal band from upper left to lower right
gptkbp:luminosity V
~0.0001 to ~1,000,000 solar luminosities
gptkbp:mainSequenceTurnoff indicator of cluster age
gptkbp:numberOfSpans O-type to M-type stars
gptkbp:partOf gptkb:Hertzsprung–Russell_diagram
gptkbp:powerSource nuclear fusion
gptkbp:range ~0.08 to ~50 solar masses
gptkbp:starsLeaveMainSequenceAs giants or supergiants
gptkbp:starsSpendMostOfLifeOn gptkb:main_sequence
gptkbp:stellarEvolutionPhase main sequence phase
gptkbp:temperature ~3,000 K to ~50,000 K
gptkbp:bfsParent gptkb:Main-sequence_star
gptkbp:bfsLayer 6