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- Classical_Cepheid_variable abstract "Classical Cepheids (also known as Population I Cepheids, Type I Cepheids, or Delta Cephei variables) are a type of Cepheid variable star. They are population I, variable stars that exhibit pulsation periods in the order of a few days to months, are 4–20 times more massive than the Sun, and up to 100,000 times more luminous. Classical Cepheids are yellow supergiants of spectral class F6 – K2 and their radii change by (~25% for the longer-period l Car) millions of kilometers during a pulsation cycle.There exists a well-defined relationship between a Classical Cepheid variable's luminosity and pulsation period, securing Cepheids as viable standard candles for establishing the Galactic and extragalactic distance scales. HST observations of Classical Cepheid variables have enabled firmer constraints on Hubble's law. Classical Cepheids have also been used to clarify many characteristics of our galaxy, such as the Sun's height above the galactic plane and the Galaxy's local spiral structure.Over 700 classical Cepheids are known in the Milky Way Galaxy, and several thousand extragalactic Cepheids have been discovered. The Hubble Space Telescope has identified classical Cepheids in NGC 4603, which is 100 million light years distant.".
- Classical_Cepheid_variable wikiPageExternalLink HomePage.html.
- Classical_Cepheid_variable wikiPageExternalLink classical_Cepheids.html.
- Classical_Cepheid_variable wikiPageExternalLink www.aavso.org.
- Classical_Cepheid_variable wikiPageExternalLink www.institute-of-brilliant-failures.com.
- Classical_Cepheid_variable wikiPageExternalLink variables.html.
- Classical_Cepheid_variable wikiPageID "29828324".
- Classical_Cepheid_variable wikiPageRevisionID "603517939".
- Classical_Cepheid_variable hasPhotoCollection Classical_Cepheid_variable.
- Classical_Cepheid_variable subject Category:Astrometry.
- Classical_Cepheid_variable subject Category:Cepheid_variables.
- Classical_Cepheid_variable subject Category:Standard_candles.
- Classical_Cepheid_variable subject Category:Variable_stars.
- Classical_Cepheid_variable type CelestialBody109239740.
- Classical_Cepheid_variable type CepheidVariables.
- Classical_Cepheid_variable type NaturalObject100019128.
- Classical_Cepheid_variable type Object100002684.
- Classical_Cepheid_variable type PhysicalEntity100001930.
- Classical_Cepheid_variable type Star109444100.
- Classical_Cepheid_variable type Thing100002452.
- Classical_Cepheid_variable type Variable109468959.
- Classical_Cepheid_variable type VariableStar109469152.
- Classical_Cepheid_variable type VariableStars.
- Classical_Cepheid_variable type Whole100003553.
- Classical_Cepheid_variable comment "Classical Cepheids (also known as Population I Cepheids, Type I Cepheids, or Delta Cephei variables) are a type of Cepheid variable star. They are population I, variable stars that exhibit pulsation periods in the order of a few days to months, are 4–20 times more massive than the Sun, and up to 100,000 times more luminous.".
- Classical_Cepheid_variable label "Classical Cepheid variable".
- Classical_Cepheid_variable label "經典造父變星".
- Classical_Cepheid_variable sameAs m.0fq2qt6.
- Classical_Cepheid_variable sameAs Q10451997.
- Classical_Cepheid_variable sameAs Q10451997.
- Classical_Cepheid_variable sameAs Classical_Cepheid_variable.
- Classical_Cepheid_variable wasDerivedFrom Classical_Cepheid_variable?oldid=603517939.
- Classical_Cepheid_variable isPrimaryTopicOf Classical_Cepheid_variable.