A progression in the characteristics of the period-amplitude diagrams for Cepheids in different galaxies

Details A progression in the characteristics of the period-amplitude diagrams for Cepheids in different galaxies A progression in the characteristics of the period-amplitude diagrams for Cepheids in different galaxies

Apr 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....65..147v&link_type=abstract

Astronomy and Astrophysics, vol. 65, no. 1, Apr. 1978, p. 147-149.

Astronomy and Astrophysics

Astrophysics

11

Cepheid Variables, Galaxies, Light Curve, Metallic Stars, Stellar Spectrophotometry, Abundance, Amplitudes, Andromeda Galaxy, Graphs (Charts), Magellanic Clouds, Milky Way Galaxy, Ubv Spectra

Scientific paper

It is shown that the enveloping line in the period-amplitude diagrams for Population I Cepheids in the SMC and LMC differ significantly from each other. The LMC line is intermediate between that of the SMC and Galaxy/M 31. A correlation between this progression and the average metal abundancy in a stellar system is indicated. The Cepheids in the galaxy NGC 6822 are likely of the SMC/LMC type.

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