Editing Variable star (section)

====Beta Cephei variables====
{{Main|Beta Cephei variable}}
Beta Cephei (β Cep) variables (sometimes called [[Beta Canis Majoris]] variables, especially in Europe)<ref>[http://www.aavso.org/vstar/vsots/winter05.shtml Variable Star Of The Season, Winter 2005: The Beta Cephei Stars and Their Relatives] {{Webarchive|url=https://web.archive.org/web/20100615085217/http://www.aavso.org/vstar/vsots/winter05.shtml |date=2010-06-15 }}, John Percy, [[AAVSO]].  Accessed October 2, 2008.</ref> undergo short period pulsations in the order of 0.1–0.6 days with an amplitude of 0.01–0.3 magnitudes (1% to 30% change in luminosity). They are at their brightest during minimum contraction. Many stars of this kind exhibits multiple pulsation periods.<ref>{{cite journal|bibcode=1978ARA&A..16..215L|title=The observational status of the Beta Cephei stars|journal=Annual Review of Astronomy and Astrophysics |volume=16|pages=215–240|last1=Lesh|first1=J. R.|last2=Aizenman|first2=M. L.|year=1978|doi=10.1146/annurev.aa.16.090178.001243}}</ref>