Photometry of cepheid variables in the Large Magellanic Cloud

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Astronomical Photometry, Cepheid Variables, Magellanic Clouds, Electrophotometry, Light Curve, Periodic Variations, Stellar Color, Stellar Luminosity, Tables (Data)

Scientific paper

A combination of photographic photometry for 165 cepheids in the Large Magellanic Cloud with the results obtained by Butler (1976, 1978) indicates that the slope of the PL relations in the Dunsink SMC, LMC I and LMC II regions are virtually identical. Results further suggest that LMC I cepheids closely resemble those of the SMC in color. It is noted that, while the abundance and reddening corrections adopted lead to a mean galactic value that is in accord with the Kurucz (1979) synthetic colors, the value is at variance with a number of galactic PC relations. It appears that the differential distance modulus SMC-LMC will not be affected by the choice of the absolute reddening scale, but will only change if larger values of R prevail in the SMC.

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