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Delta Cephei, 27 Cephei ... Delta Cephei Variable (type I Cepheid) in Cepheus ... Delta Cephei was discovered by John Goodricke in 1784. It was actually the second Delta Cephei Star, or Cepheid variable, to be discovered; the first one, Eta Aquilae, had been discovered earlier the same year by Goodricke's good friend,
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seds.org/~spider/spider/Vars/deltaCep.html
seds.org/~spider/spider/Vars/deltaCep.html
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DELTA CEP (Delta Cephei). Surely among the most famed of all stars, fourth magnitude (4.1 or thereabouts) Delta Cephei, set at the southeastern corner of dim Cepheus (the King), does not even have a proper name. Delta Cephei does not pulse in lonely splendor, but has a 6th magnitude (6.3) class B (probably B7) 500...
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stars.astro.illinois.edu/sow/deltacep.html
stars.astro.illinois.edu/sow/deltacep.html
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Delta Cephei is the prototype of the Cepheid class of variable stars. With a change in visual magnitude of 3.5 to 4.4, delta Cep's entire range of variability can be observed with the unaided eye.
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www.aavso.org/vstar/vsots/0900.shtml
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1. Using an all-sky chart, locate the constellation Cepheus in which Delta Cephei lies. ... 3. Measure the brightness of Delta Cephei on each clear night for a month. ... 6. Plot the magnitude of Delta Cephei against time in JD...
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www.eso.org/public/outreach/eduoff/aol/market/collabora...
www.eso.org/public/outreach/eduoff/aol/market/collaboration/varstar/pg2.html
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The second Cepheid variable to be identified and the prototype for the category known as Type I Cepheids, or Delta Cephei stars. With a change in apparent magnitude of 3.5 to 4.4 over a period of 5.366 days, Delta Cep's entire range of variability can be followed with the naked eye.
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www.daviddarling.info/encyclopedia/D/Delta_Cephei.html
www.daviddarling.info/encyclopedia/D/Delta_Cephei.html
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Delta Cephei stars occupy a region of the Hertzspung-Russell diagram known as the instability strip; having started life as hydrogen-burning B stars they are now in a post-main-sequence phase marked by instability to radial pulsation.
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www.daviddarling.info/encyclopedia/D/Delta_Cephei_star....
www.daviddarling.info/encyclopedia/D/Delta_Cephei_star.html
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Delta Cephei is one of the most significant variable stars, the prototype of what are called "Cepheid variables". Through studies on the periods of the variability of Cepheid stars, it has been possible to more accurately gauge distances to outlying galaxies.
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www.dibonsmith.com/cep_d.htm
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I never squeed about all the truly awesome things I got for my birthday this year! And I really should! Because they are! Truly awesome, I mean. tacittype recorded my McShep fic Embrace Yourself (And Others, Too), and it's so great and unbelievably cool to hear your own fic read I love it! ... It's all one big coincidence.
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deltacephei.livejournal.com/
deltacephei.livejournal.com/
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Analysis of the spectrum of delta Cephei suggests that along with the ... Named after delta-Cephei, Cepheid Variables are the most important type of ...
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hyperphysics.phy-astr.gsu.edu/Hbase/astro/cepheid.html
hyperphysics.phy-astr.gsu.edu/Hbase/astro/cepheid.html
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