High-speed photometry of Wolf-Rayet stars

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Photometry, Pulsars, Wolf-Rayet Stars, X Ray Sources, Binary Stars, Radio Astronomy, Stellar Magnitude

Scientific paper

We have monitored ten bright WR stars at ultrahigh (0.005 or 0.01 s) and/or high (1 or 5 s) time resolution. Only EZ CMa=WR6 (WN5, periodically variable, non WR+O) shows evidence for a possible period in the range expected for a spun-up pulsar: P approximately 0.11 s. We did not confirm the 10.5 min periodicity recently announced in the WN8 star HD 96548=WR40.

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