Multivariate comparisons of the period-light-curve shape distributions of Cepheids in five galaxies

Details Multivariate comparisons of the period-light-curve shape distributions of Cepheids in five galaxies Multivariate comparisons of the period-light-curve shape distributions of Cepheids in five galaxies

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007mnras.377.1281k&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 377, Issue 3, pp. 1281-1286.

Astronomy and Astrophysics

Astronomy

4

Methods: Statistical, Cepheids, Galaxies: Stellar Content

Scientific paper

A number of published tests suitable for the comparison of multivariate distributions are described. The results of a small power study, based on realistic Cepheid log period - Fourier coefficient data, are presented. It is found that a statistic due to Henze has good general performance. The tests are applied to Cepheid observations in the Milky Way galaxy, Large Magellanic Cloud, Small Magellanic Cloud, IC 1613 and NGC 6822. The null hypothesis of equal populations is rejected for all pairs compared, except IC 1613 - NGC 6822.

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