The delta Scuti variability of the high metallicity delta Del star, rho Pavonis

Details The delta Scuti variability of the high metallicity delta Del star, rho Pavonis The delta Scuti variability of the high metallicity delta Del star, rho Pavonis

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.194..737k&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 194, Mar. 1981, p. 737-746.

Astronomy and Astrophysics

Astronomy

8

A Stars, Metallic Stars, Stellar Oscillations, Stellar Spectrophotometry, Variable Stars, Light Curve, Radial Velocity, Stellar Radiation

Scientific paper

The δ Del star, ρ Pav, is announced to be a δ Scuti variable (Δy ≤ 0.03 mag). Thirty-nine hours of observations in both b and y colours are presented. It appears that ρ Pav pulsates with more than one frequency, but the present data are inadequate to derive a definitive frequency solution. A frequency analysis of both the b and y data indicates that f1 = 8.761 ± 0.014 day-1 is the frequency of highest amplitude. Simultaneous light and radial velocity observations were obtained on one night which yield (ΔR/R)/ΔMbol = 0.11, a value typical of δ Scuti stars. The δ Del spectral classification of ρ Pav and its metallicity index, δm0 = -0.092, both indicate that it is probably a metallic line star.

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