Sentence examples for variables are starred from inspiring English sources
Categorical variables are starred.
Cepheid variables are stars that vary in brightness over a period that depends on their absolute brightness, which lets astronomers use them as "standard candles" to measure vast distances.
Eruptive variables are stars that experience sudden increases in luminosity because of flares or mass ejection events.
R Coronae Borealis variables are giant stars of about the Sun's temperature whose atmospheres are characterized by excessive quantities of carbon and very little hydrogen.
Finally, among the various types of pulsating variable stars, the Beta Canis Majoris variables are high-temperature stars (spectral type B) that often show complicated variations in spectral-line shapes and intensities, velocity curves, and light.
Shapley also showed that Cepheid variables cannot be star pairs that eclipse each other.
Long-period variables are sometimes called Mira stars, after Mira Ceti (Omicron Ceti) in the constellation Cetus, the first star recognized to be variable.
Existing theory is also ineffective because sequence coverage has not yet been considered [ 12]. †Some variables are modified with a "star" superscript to denote optima, for example σ* is the optimum sample size for a project, ρ* the optimum per-sample redundancy, and the discovery probability under optimal conditions.
The variables are greater".
Therefore, these two variables were finally optimized by a 22 + star orthogonal central composite design with 5 centre points and 2 replicates, and optimum values of 200 °C and 10 mL for temperature and TMAH volume, respectively, were found.
