CoRoT observations of variable stars in the young open cluster Dolidze 25

V. Ripepi, S. Leccia, A. Baglin, A. Ruoppo, S. Bernabei, K. Zwintz, F. Cusano, D. Gandolfi, E. W. Guenther, S. Alencar, M. Marconi, M. J. P. F. G. Monteiro, F. Palla, J. M. Alcalá, T. Böhm, C. Catala, C. Chavero, W. S. Corradi, S. Degl'Innocenti, R. de la Reza, M. Deleuil, F. Favata, M. Fernández, J. Gregorio-Hetem, J. D. R. Lépine, F. J. G. Pinheiro, P. G. Prada Moroni, G. R. Quast, C. A. O. Torres, W. W. Weiss

Abstract
We present some preliminary results based on the CoRoT observations of the young distant cluster Dolidze 25. The light curve for the 33 stars observed by the satellite have been analyzed to determine their frequency spectrum. We used these data in conjunction with AAOMEGA@3.9 AAT spectra (available for about half of the targets) to determine the variability class of the investigated objects. As a result we have found 2 binary, 2 Pulsating Be (+2 candidates), 4 SPB, 2 Spotted and 1 ellipsoidal, 1 δ Scuti, and 3 unknown type variables. A detailed analysis for every star is ongoing.

Seismological Challenges for Stellar Structure, HELAS IV
(Eds.) T. Roca, P. Palle, S. Jimenez

Astronomische Nachrichten
Vol. 331, Page P54_1
2010

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