Authors:
RODRIGUEZ, E; ROLLAND, A; DECOCA, PL; GARRIDO, R; GARCIALOBO, E
Journal:
REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA
Abstract:
We have carried out a systematic study of the behaviour of the delta-m1 metallicity index for SX Phe and high amplitude delta Sct stars. It is shown to be different for the two samples of stars. The delta-m1 parameter increases or decreases towards the minimum light for the first or second sample, respectively. The m1 index variation is larger when the metal abundance of the star is smaller.
Keywords:
PHOTOMETRY; STARS-DELTA SCUTI; STARS-VARIABLE