Are the Luminosities of RR Lyrae Stars Affected by Second Parameter Effects?

Preprint

22 September 1995

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/9509118

Abstract

There is a serious discrepancy between the distance to the LMC derived from the Cepheid Period-Luminosity relation and that obtained by using the Galactic calibration for the luminosity of RR Lyrae stars. It is suggested that this problem might be due to the fact that second parameter effects make it inappropriate to apply Galactic calibrations to RR Lyrae variables in the Magellanic Clouds, i.e. Mv(RR) could depend on both [Fe/H] and on one or more second parameters.

Keywords

SECOND PARAMETER EFFECTS
SECOND PARAMETERS
LUMINOSITY OF RR
RR LYRAE STARS
LUMINOSITIES
CALIBRATION

All Related Versions

Version 1, 1995-09-22, ArXiv
Published version: The Astrophysical Journal, 451 (2), L65.

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