Problems and possibilities in fine-tuning of the Cepheid P-L relationship

Details Problems and possibilities in fine-tuning of the Cepheid P-L relationship Problems and possibilities in fine-tuning of the Cepheid P-L relationship

2012-01-10

arxiv.org/abs/1201.1991v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

7 pages, 8 figures; accepted for publication in Astrophysics & Space Science

Scientific paper

Factors contributing to the scatter around the ridge-line period-luminosity
relationship are listed, followed by a discussion how to eliminate the adverse
effects of these factors (mode of pulsation, crossing number, temperature
range, reddening, binarity, metallicity, non-linearity of the relationship,
blending), in order to reduce the dispersion of the P-L relationship.

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