Short-term variable stars come in two flavors. One is intrinsic, meaning their luminosity changes due to features such as expansion, contraction, eruption or pulsation. The second is extrinsic ...

Variable stars are either intrinsic (meaning their luminosity changes due to features such as expansion, contraction, eruption or pulsation) or extrinsic (meaning that a star or planet passes in ...

CEPHEID (variable stars—the name given to stars which behave ... is a definite relation between period and median absolute luminosity—was discovered by Miss Leavitt in 1912 when investigating ...

Oscillations in this shell produce the metronomelike flickerings. The period of change in all similar variable stars, called Cepheids, is directly related to their true luminosity, a remarkable ...

Within the next 12 months, the team plans to take all of their data to calibrate the luminosity of these stars over their visible-light wavelengths, and release this data to astronomers. Next year, ...

But there are exceptions and some stars – dubbed variable stars – change in brightness. Most famous is Mira, the “star of wonder”, which was discovered as a variable star by the German ...

She also found a near-perfect relationship between the period of variation of these stars and their average luminosity, or light output. These Cepheid variables could then be used as mile markers ...

But there are exceptions, and some stars — dubbed variable stars — change in brightness. Most famous is Mira, the “star of wonder,” which was discovered as a variable star by the German ...