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Observations of  Ara

Observations of  Ara. Be stars -> Hot main sequence stars with :. Emission in H Circumstellar shell Rotation Non radial pulsations Flares : Mass Ejection ?. S. Lacour & X. Haubois. Reduction…. UV plane and visibilities. Without calibration With calibration.

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Observations of  Ara

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  1. Observations of  Ara Be stars -> Hot main sequence stars with : • Emission in H • Circumstellar shell • Rotation • Non radial pulsations • Flares : Mass Ejection ? S. Lacour & X. Haubois

  2. Reduction…

  3. UV plane and visibilities • Without calibration With calibration

  4. But the information is in the phase! (differential) • 0.3 rad rms  16 degree rms : The closure phase measurements are very noisy • The differential phase is great!

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