Radial-velocity variations of the Delta Scuti star 20 Canum Venaticorum

Details Radial-velocity variations of the Delta Scuti star 20 Canum Venaticorum Radial-velocity variations of the Delta Scuti star 20 Canum Venaticorum

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pasp...98..862y&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 98, Sept. 1986, p. 862-866. NSERC-supported research.

Astronomy and Astrophysics

Astronomy

8

Radial Velocity, Stellar Motions, Stellar Oscillations, Variable Stars, Stellar Spectra

Scientific paper

Precise radial velocities have been measured for the δ Scuti variable 20 CVn. The Ca II λ8662 line shows a 2K amplitude of 1.4 km s-1. The weak lines of Fe I, Si I, and S I show a 2K amplitude of 1.2 km s-1. A cycle-count period of 0d.130 is derived from the radial-velocity curves. The low 2K/Δmv value of 39 km s-1mag-1 suggests that 20 CVn is pulsating nonradially.

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