Nonradial Pulsation of the Delta-Scuti Star Bu-Cancri in the Praesepe Cluster

Details Nonradial Pulsation of the Delta-Scuti Star Bu-Cancri in the Praesepe Cluster Nonradial Pulsation of the Delta-Scuti Star Bu-Cancri in the Praesepe Cluster

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...271..482b&link_type=abstract

Astronomy and Astrophysics, Vol.271, NO. 2/APR, P. 482, 1993

Astronomy and Astrophysics

Astrophysics

237

Stars: Δ Scuti, Stars: Oscillations Of, Stars: Variables, Stars: Photometry, Stars: Bu Cnc, Stars: Kw 207, Stars: Hd 73576

Scientific paper

Multisite photoelectric photometry of the δ Scuti star BU Cnc in the Prasepe cluster was obtained during 1989 February at five observatories on three continents. Five pulsation frequencies (19.76, 17.36, 16.69, 18.62 and 19.87 cycles d-1) with millimag amplitudes were detected with a signal/noise amplitude ratio ≥ 4.0. An additional frequency at 23.91 cycles d-1 might also exist. The solution fits the observations to ±2.6 millimag.
The pulsation modes can be identified with p3±1 modes with at least two different l values. Only up to two (l=0) radial modes are possible.

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