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

Abstract

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.

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

References in corpus (6)

• The Distribution of the Elements in the Galactic Disk III. A Reconsideration of Cepheids from l = 30 to 250 Degrees
• The influence of chemical composition on the properties of Cepheid stars. II-The iron content
• The Distribution of the Elements in the Galactic Disk II. Azimuthal and Radial Variation in Abundances from Cepheids
• The Cepheid Phase Lag Revisited
• The Detailed Forms of the LMC Cepheid PL and PLC Relations
• Observational studies of Cepheid amplitudes. II Metallicity dependence of pulsation amplitudes

Cited by in corpus (10)

• A geometrical 1% distance to the short-period binary Cepheid V1334 Cygni
• Determination of the iron content of Cepheids from the shape of their light curves
• Discovery of the spectroscopic binary nature of six southern Cepheids
• Properties of the open cluster Tombaugh 1 from high resolution spectroscopy and uvbyCaH$\beta$ photometry
• Synthetic population of binary Cepheids. I. The effect of metallicity and initial parameter distribution on characteristics of Cepheids' companions
• Synthetic Population of Binary Cepheids. II. The effect of companion light on the extragalactic distance scale
• Discovery of the spectroscopic binary nature of the classical Cepheids FN Aql and V1344 Aql
• Non-evolutionary effects on period change in Magellanic Cepheids I. New binary systems revealed from Light Travel Time Effect
• Orbit determination for the binary Cepheid V1344 Aql
• Hunting for binary Cepheids using lucky imaging technique