Cepheïed: Verskil tussen weergawes

’n '''Cepheïed''' is ’n baie helder soort [[veranderlike ster]]. Die noue direkte verhouding tussen Cepheïede se helderheid en hul polsperiode<ref name=udalski99>{{cite journal |arxiv=astro-ph/9908317 |bibcode=1999AcA....49..223U |title=The Optical Gravitational Lensing Experiment. Cepheids in the Magellanic Clouds. IV. Catalog of Cepheids from the Large Magellanic Cloud |author1=Udalski, A. |author2=Soszynski, I. |author3=Szymanski, M. |author4=Kubiak, M. |author5=Pietrzynski, G. |author6=Wozniak, P. |author7=Zebrun, K. |volume=49 |year=1999 |pages=223 |journal=Acta Astronomica}}</ref><ref name=sos08>{{cite journal |arxiv=0808.2210 |bibcode=2008AcA....58..163S |title=The Optical Gravitational Lensing Experiment. The OGLE-III Catalog of Variable Stars. I. Classical Cepheids in the Large Magellanic Cloud |author1=Soszynski, I. |author2=Poleski, R. |author3=Udalski, A. |author4=Szymanski, M. K. |author5=Kubiak, M. |author6=Pietrzynski, G. |author7=Wyrzykowski, L. |author8=Szewczyk, O. |author9=Ulaczyk, K. |volume=58 |year=2008 |pages=163 |journal=Acta Astronomica}}</ref> het hul status bepaal as standaardmeetinstrumente vir afstande in die [[heelal]].<ref name=freedman2001>{{cite journal |arxiv=astro-ph/0012376 |bibcode=2001ApJ...553...47F |doi=10.1086/320638 |title=Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant |year=2001 |last1=Freedman |first1=Wendy L. |last2=Madore |first2=Barry F. |last3=Gibson |first3=Brad K. |last4=Ferrarese |first4=Laura |last5=Kelson |first5=Daniel D. |last6=Sakai |first6=Shoko |last7=Mould |first7=Jeremy R. |last8=Kennicutt jr. |first8=Robert C. |last9=Ford |first9=Holland C. |journal=The Astrophysical Journal |volume=553 |pages=47–72}}</ref><ref name=tammannsandage2008>{{cite journal |arxiv=0806.3018 |bibcode=2008A&ARv..15..289T |doi=10.1007/s00159-008-0012-y |title=The expansion field: the value of H 0 |year=2008 |last1=Tammann |first1=G.A. |last2=Sandage |first2=A. |last3=Reindl |first3=B. |journal=The Astronomy and Astrophysics Review |volume=15 |issue=4 |pages=289–331}}</ref><ref name=freedman2010>{{cite journal |arxiv=1004.1856 |bibcode=2010ARA&A..48..673F |title=The Hubble Constant |author1=Freedman, Wendy L. |author2=Madore, Barry F. |volume=48 |year=2010 |pages=673 |journal=Annual Review of Astronomy and Astrophysics |doi=10.1146/annurev-astro-082708-101829}}</ref>

 

 

Die term "Cepheïed" kom van die ster [[Delta Cephei]] in die [[sterrebeeld]] [[Cepheus (sterrebeeld)|Cepheus]], die eerste ster van dié soort wat geïdentifiseer is, deur John Goodricke in 1784. Dit is ook een van die Cepheïede waarvan die afstand die akkuraatste bepaal is, deels danksy sy ligging in ’n [[sterreswerm]]<ref

 

== Verwysings ==

{{Verwysings}}

 

{{CommonsKategorie-inlyn|Cepheidae|Cepheïede}}

 

{{sterre}}