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- W154949845 abstract "Abstract We present the preliminary results of our analysis of the precise radial velocity (RV) measurements of the roAp star HR1217. We have obtained over 2000 spectra of this star (54 hours of coverage) covering a complete rotation period using the 2-d coude echelle spectrograph of the McDonald Observatory’s 2.7m telescope. Our RV data show rotational modulation in both the amplitude and phase of the pulsations. The broad-band (covering 110 Å) RV semi-amplitudes of the f 2 mode (=2.65 mHz) varied in the range of 25 m s –1 to 200 m s –1 ." @default.
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- W154949845 date "2002-01-01" @default.
- W154949845 modified "2023-09-27" @default.
- W154949845 title "Radial Velocity Studies of roAp stars: Rotational Modulation in HR 1217" @default.
- W154949845 doi "https://doi.org/10.1017/s0252921100016304" @default.
- W154949845 hasPublicationYear "2002" @default.
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