A Complicated Pulsation δ Scuti Variable in Praesepe: HD 74028

Details A Complicated Pulsation δ Scuti Variable in Praesepe: HD 74028 A Complicated Pulsation δ Scuti Variable in Praesepe: HD 74028

Feb 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aj....133..518l&link_type=abstract

The Astronomical Journal, Volume 133, Issue 2, pp. 518-525.

Astronomy and Astrophysics

Astronomy

1

Delta Scuti, Open Clusters And Associations: Individual: Praesepe, Stars: Individual: Hd 74028, Stars: Oscillations

Scientific paper

We report the pulsation characteristics of the δ Scuti star HD 74028, a low-amplitude pulsator in the Praesepe cluster. Amplitude spectra of 126 hr of observations spanning 16 nights indicate multiperiodic pulsation behavior. We identify three frequencies, f1=22.6652, f2=23.8505, and f3=20.5254 cycles day-1, and find four additional candidate frequencies, f4=17.3060, f5=12.0643, f6=14.8160, and f7=17.1143 cycles day-1. This complicated frequency distribution requires an explanation that includes rotational splitting.

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