Radial Velocity variations of the roAp-star HD122970: new results

Details Radial Velocity variations of the roAp-star HD122970: new results Radial Velocity variations of the roAp-star HD122970: new results

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004coast.145...80g&link_type=abstract

Communications in Asteroseismology, vol. 145, p. 80

Physics

2

Scientific paper

In this paper we present new results on the precise relative radial velocity (RV) measurements for the roAp star HD122970. The RV line-by-line frequency analysis revealed the dependence of the pulsational amplitudes on the line strength and a bi-modal phase distribution. These new results can be considered as a significant evidence of the presence of a radial node in the atmosphere of HD122970.

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