Property talk:P881
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Documentation
type of variable star
type of star
type of star
[create Create a translatable help page (preferably in English) for this property to be included here]
Value type “variable star (Q6243)”: This property should use items as value that contain property “subclass of (P279)”. On these, the value for subclass of (P279) should be an item that uses subclass of (P279) with value variable star (Q6243) (or a subclass thereof). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). List of violations of this constraint: Database reports/Constraint violations/P881#Value type Q6243, SPARQL
Type “star (Q523), binary star (Q50053), multiple star (Q878367), triple star system (Q2088753)”: item must contain property “instance of (P31)” with classes “star (Q523), binary star (Q50053), multiple star (Q878367), triple star system (Q2088753)” or their subclasses (defined using subclass of (P279)). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). List of violations of this constraint: Database reports/Constraint violations/P881#Type Q523, Q50053, Q878367, Q2088753, SPARQL
Scope is as main value (Q54828448): the property must be used by specified way only (Help)
List of violations of this constraint: Database reports/Constraint violations/P881#Scope, hourly updated report, SPARQLCitation needed: the property must have at least one reference (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). List of violations of this constraint: Database reports/Constraint violations/P881#citation needed
This property is being used by: Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.) |
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Hierarchy
[edit]Here a proposed hierarchy for variables star taken by the General Catalogue of Variable Stars (Q222662) documentation. The list below is not yet complete! --Paperoastro (talk) 23:43, 9 March 2014 (UTC)
- variable star (Q6243)
- eruptive variable star (Q1362543)
- pulsating variable star (Q353834)
- Alpha Cygni variable (Q622467)
- Beta Cephei variable (Q764463)
- Cepheid variable (Q188593)
- Delta Scuti variable (Q836976)
- Gamma Doradus variable (Q1493194)
- slow irregular variable (Q779609)
- Mira variable (Q744691)
- PV Telescopii variable (Q834620)
- RR Lyrae variable (Q726242)
- RV Tauri variable (Q727379)
- semiregular variable star (Q1054411)
- pulsating white dwarf (Q136562)
- rotating variable star (Q15917122)
- cataclysmic variable star (Q1059564)
- ...
- ...
Check the hierarchy
[edit]Item | Property | Expected value | Found value | |
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eruptive variable star | subclass of | variable star | [[variable star]] | |
pulsating variable star | subclass of | variable star | [[variable star]] | |
rotating variable star | subclass of | variable star | [[variable star]] | |
cataclysmic variable star | subclass of | variable star | [[variable star]] [[contact binary]] |
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Orion variable | subclass of | eruptive variable star | [[eruptive variable star]] [[pre-main-sequence star]] |
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Gamma Cassiopeiae variable | subclass of | eruptive variable star | [[eruptive variable star]] | |
R Coronae Borealis variable | subclass of | eruptive variable star | [[eruptive variable star]] | |
RS Canum Venaticorum variable | subclass of | eruptive variable star | [[binary star]] [[eruptive variable star]] |
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luminous blue variable | subclass of | eruptive variable star | [[eruptive variable star]] | |
flare star | subclass of | eruptive variable star | [[eruptive variable star]] | |
FU Orionis variable | subclass of | Orion variable | [[Orion variable]] | |
Alpha Cygni variable | subclass of | pulsating variable star | [[pulsating variable star]] | |
Beta Cephei variable | subclass of | pulsating variable star | [[pulsating variable star]] | |
Cepheid variable | subclass of | pulsating variable star | [[pulsating variable star]] | |
Delta Scuti variable | subclass of | pulsating variable star | [[pulsating variable star]] | |
Gamma Doradus variable | subclass of | pulsating variable star | [[pulsating variable star]] | |
slow irregular variable | subclass of | pulsating variable star | [[pulsating variable star]] [[long-period variable star]] |
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Mira variable | subclass of | pulsating variable star | [[pulsating variable star]] [[red giant]] [[long-period variable star]] |
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PV Telescopii variable | subclass of | pulsating variable star | [[pulsating variable star]] | |
RR Lyrae variable | subclass of | pulsating variable star | [[pulsating variable star]] | |
RV Tauri variable | subclass of | pulsating variable star | [[pulsating variable star]] | |
semiregular variable star | subclass of | pulsating variable star | [[pulsating variable star]] [[long-period variable star]] |
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pulsating white dwarf | subclass of | pulsating variable star | [[white dwarf]] [[pulsating variable star]] |
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classical Cepheid variable | subclass of | Cepheid variable | [[Cepheid variable]] | |
W Virginis variable | subclass of | Cepheid variable | [[Type II Cepheid]] | |
Rapidly oscillating Ap star | subclass of | Delta Scuti variable | [[Alpha² Canum Venaticorum variable]] [[Ap and Bp stars]] |
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SX Phoenicis variable | subclass of | Delta Scuti variable | [[Delta Scuti variable]] | |
Alpha² Canum Venaticorum variable | subclass of | rotating variable star | [[rotating variable star]] | |
BY Draconis variable | subclass of | rotating variable star | [[rotating variable star]] |
Duplicate of P31
[edit]This property appears to duplicate instance of (P31). --Izno (talk) 03:50, 17 September 2013 (UTC)
- I'm not sure:
- most of the stars is variable and the ontology of this classification is a very complicated tree (see en:Variable star). IMHO This property is a classification as spectral class (P215) with the difference that this property is item datatype, and P215 is string.
- en:Template:Starbox character have a parameter "variable", that can be covered by this property.
- It is a question of semantic: where do we stop P31? We can classify all with P31! Brad Pitt (Q35332) "is a" -> person, not "is a" -> actor" plus "is a" person with light hair" without use properties for job or colour of hair. The same: Delta Cephei (Q13024) "is a" -> "star", not "is a" -> " Cepheid variable" plus "is a" -> "G-type supergiant".
- --Paperoastro (talk) 07:54, 17 September 2013 (UTC)
- One could even classify Brad Pitt (Q35332)instance of (P31)variable star (Q6243)...
- Other than that, I agree with Izno's point that instance of (P31) would fit the bill here. We tend to use instance of (P31) as long as there is a single, universal value. So Meredith Brooks (Q237952)instance of (P31)human (Q5), but not Meredith Brooks (Q237952)instance of (P31)mother (Q7560) because she's also a bunch of other things that are sort-of on the same level. --Matthias Winkelmann (talk) 21:55, 21 November 2020 (UTC)
Note
[edit]- ↑ need a source for the instance of the property subclass of (P279)