Asteroseismology of fast-rotating stars: the example of α Ophiuchi Mirouh, Giovanni Marcello Reese, Daniel R. Espinosa Lara, Francisco Ballot, Jérôme Rieutord, Michel stars: oscillations stars: rotation stars: individual: α Oph Rasalhague Université de Toulouse, UPS-OMP, IRAP, Toulouse, France; CNRS, IRAP, 14 avenue Edouard Belin, 31400 Toulouse, France. Many early-type stars have been measured with high angular velocities. In such stars, mode identification is difficult as the effects of fast and differential rotation are not well known. Using fundamental parameters measured by interferometry, the ESTER structure code and the TOP oscillation code, we investigate the oscillation spectrum of α Ophiuchi, for which observations by the MOST satellite found 57 oscillations frequencies. Results do not show a clear identification of the modes and highlight the difficulties of asteroseismology for such stars with a very complex oscillation spectrum. 2026-02-20T13:27:38Z 2026-02-20T13:27:38Z 2014-02-18 journal article Mirouh, G.M. et al. (2013) ‘Asteroseismology of fast-rotating stars: the example of α Ophiuchi’, Proceedings of the International Astronomical Union, 9(S301), pp. 455–456. https://doi.org/10.1017/S1743921313015020 https://hdl.handle.net/10481/111327 10.1017/S1743921313015020 eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional Cambridge University Press