Astronomers from the University of Warsaw, Poland and elsewhere have detected a new classical Cepheid variable star. The newfound star, which received designation OGLE-GD-CEP-1884, has the longest ...

A new study under the SPECTRUM project updated radiative opacity tables in hydrodynamical pulsation models for Classical Cepheid and RR Lyrae stars. The results show only minor shifts in instability ...

The new results, from a team led by Grzegorz Pietrzyński (Universidad de Concepción, Chile, Obserwatorium Astronomiczne Uniwersytetu Warszawskiego, Poland), appear in the Nov. 25, 2010 edition of the ...

Scientists have clocked the speed of Cepheid stars -- 'standard candles' that help us measure the size of the universe -- with unprecedented precision, offering exciting new insights about them.

(PhysOrg.com) -- By discovering the first double star where a pulsating Cepheid variable and another star pass in front of one another, an international team of astronomers has solved a decades-old ...

Cepheid variables are a class of stars with a luminosity that changes as a function of time. Cepheids are well-studied astronomical bodies—they were first discovered in 1784—and subsequent work has ...

Cepheid variables are pulsating supergiant stars whose regular brightness variations are tightly correlated with their intrinsic luminosities. This period–luminosity relation, often termed the Leavitt ...

THE oscillations induced in the principal modes of vibration of a star by a free oscillation in one of them, generally of the second order in the corresponding free amplitude, are unimportant unless ...

Cepheid distances are determined through the so-called inverse-square law of light, which tells astronomers how a star’s apparent brightness diminishes with distance. If a star appears to have a ...

The new results, from a team led by Grzegorz Pietrzyński (Universidad de Concepción, Chile, Obserwatorium Astronomiczne Uniwersytetu Warszawskiego, Poland), appear in the 25 November 2010 edition of ...