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Delta Scorpii 2011 periastron: worldwide observational campaign and preliminary photometric analysis
Delta Scorpii Diff erential Photometry
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2011/9/28
Delta Scorpii is a double giant Be star in the forefront of the Scorpio, well visible to the naked eye, being normally of magnitude 2.3. In the year 2000 its luminosity rose up suddenly to the magnitu...