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We present the results of the analysis of 56 échelle spectra of the β Cephei star BW Vulpeculae. The data were obtained during three nights with the SOFIN spectrograph at the Nordic Optical Telescope and cover a wavelength range from 3650 Å to 7340 Å. We compare the observed spectrum with a synthetic spectrum calculated from a model atmosphere for this star utilizing the program ATLAS9 by Kurucz. From this, we determine a projected rotational velocity, v sin i, of 24 km s −1 . Detailed spectraldoi:10.1051/0004-6361:20031005 fatcat:6mn6oxzsgza3piditpk2ru3fji