On the Pulsation Amplitude of Cepheid Variables

Details On the Pulsation Amplitude of Cepheid Variables On the Pulsation Amplitude of Cepheid Variables

Jun 1972

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1972ap%26ss..16..445n&link_type=abstract

Astrophysics and Space Science, Volume 16, Issue 3, pp.445-450

Astronomy and Astrophysics

Astrophysics

5

Scientific paper

On the basis of more abundant data a relation logPΔV/logΔR for cepheid variables (Fernie, 1965) is constructed. A linear relation between logP ΔV and logΔR for classical cepheids is found, which perhaps has a break at ΔR=10R &sun;. On the logΔR/logP diagram thes-cepheids (Efremov, 1968) show a distinct sequence. Alls-cepheids present a relative variation of the radii ΔR/R≤≤0.075. The existence of non-s-cepheids with ΔR/R≤0.075 raises a point about the evolutionary place of these stars (see Efremov, 1968). One could suppose that cepheids with logP>1.1 pulsate in the first overtone.

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