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First Results of the 17th DSN Campaign: Photometry of XX Pyx

  • T. Arentoft (a1), G. Handle (a2) (a3), R. R. Shobbrook (a4), M. A. Wood (a5), L. Crause (a6), P. Crake (a7), F. Podmore (a8), A. Habanyama (a9), T. Oswalt (a5), P. V. Birch (a7), G. Lowe (a7), C. Sterken (a1), P. Meintjes (a10), J. Brink (a10), C. F. Claver (a11), R. Medupe (a6), J. A. Guzik (a12), T. E. Beach (a13), P. Martinez (a3), E. M. Leibowitz (a14), P. A. Ibbetson (a14), T. Smith (a7), B. N. Ashoka (a15), N. E. Raj (a15), D. W. Kurtz (a6), L. A. Balona (a3), J. E. S. Costa (a16) and M. Breger (a2)...

Abstract

We present the first results from multi-site observations of the δ Scuti star XX Pyx (CD–24°7599). The observations were carried out as the 17th run of the Delta Scuti Network. We collected 583 hr of B, V time-series photometry, resulting in a detection level (4σ) in the amplitude spectrum of 0.5 mmag. We detect 6 new pulsation frequencies, bringing the total number of frequencies known in this star up 19.

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References

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Dziembowski, W.A. & Pamyatnykh, A.A. 1991, A&A, 248, Lll
Handler, G., Pikali, H., O’Donoghue, D., et al. 1997, MNRAS, 286, 303
Handler, G., et al. 1999, in preparation for MNRAS
Kjeldsen, H. & Frandsen, S. 1992, PASP, 104, 413
Nather, R.E., Winget, D.E., Clemens, J.C., et al. 1990, ApJ, 361, 309

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