Poster abstract details

A search for pulsations in HgMn stars with CoRoT observations of HD 45975
T. Morel, M. Briquet, M. Auvergne, S. Ghazaryan, G. Alecian, E. Niemczura, L. Fossati, S. Hubrig, H. Lehmann, C. Ulusoy, M. Rainer, E. Poretti, H. Van Winckel, K. De Smedt, P. Papics, V. Schmid, J. F. da Silva Gameiro, C. Waelkens, M. Fagas, K. Kaminski, W. Dimitrov, A. Baglin, L. Dumortier, Y. Fremat, H. Hensberge, A. Jorissen, S. Van Eck, A. Baglin


The existence of pulsations in HgMn stars is still debated. In order to provide the first unambiguous, observational detection of pulsations in this class of chemically-peculiar objects, the bright star HD 45975 was monitored for nearly two months by CoRoT. We present a preliminary analysis of the light curves independently carried out by two teams (Liege and Meudon) and briefly discuss the results of a multisite, ground-based spectroscopic campaign overlapping the CoRoT observations.