Statements (33)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
stellar classification
|
| gptkbp:alsoKnownAs |
sdB star
sdO star |
| gptkbp:canBe |
binary star system
single star |
| gptkbp:cataloguedIn |
gptkb:Hamburg/ESO_survey
gptkb:Palomar-Green_survey |
| gptkbp:coreComposition |
gptkb:helium
|
| gptkbp:discoveredBy |
gptkb:Willem_Luyten
|
| gptkbp:enveloped |
thin hydrogen layer
|
| gptkbp:evolutionaryStage |
post-red giant
|
| gptkbp:firstDescribed |
1947
|
| https://www.w3.org/2000/01/rdf-schema#label |
Hot subdwarf
|
| gptkbp:location |
gptkb:Milky_Way
|
| gptkbp:luminosity |
gptkb:subdwarf
|
| gptkbp:mainSequenceProgenitor |
A-type star
B-type star |
| gptkbp:mass |
~0.5 solar masses
|
| gptkbp:metallicity |
low
|
| gptkbp:notableExample |
gptkb:Feige_34
gptkb:HD_49798 gptkb:PG_1605+072 |
| gptkbp:relatedTo |
white dwarf
blue horizontal branch star planetary nebula nucleus |
| gptkbp:spectralType |
O
B |
| gptkbp:studiedIn |
stellar evolution
ultraviolet astronomy |
| gptkbp:surfaceGravity |
high
|
| gptkbp:temperature |
20,000–40,000 K
|
| gptkbp:bfsParent |
gptkb:Stars
|
| gptkbp:bfsLayer |
5
|