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We present new optical time-resolved photometry and medium-resolutionspectroscopy of V2187 Cyg. We confirm its classification as a beta Cephei starbased on sinusoidal light variations with a period of 0.2539 days and meanamplitudes of 0.037 and 0.042 magnitudes in "i" and "V", respectively. Weclassified the spectrum of this star B2-3V with no evidence of variations inthe profiles of its absorption lines in timescales of hours or days. Thestellar spectrum is totally absent of emission lines. We detected unexpectedfaint radio continuum emission (between 0.4 and 0.8 mJy at 6-cm) showing asinusoidal variation with a period of 12.8 days. The radio spectrum is thermal.We searched in the Very Large Array archive for radio continuum emission towardother 15 beta Cephei stars. None of these additional stars, some of them muchcloser to the Sun than V2187 Cyg, was detected, indicating that radio emissionis extremely uncommon toward beta Cephei stars.

Periodic Radio Continuum Emission Associated with the beta Cephei Star V2187 Cyg