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تسجيل مستخدم جديدCool Stars in the Hertzsprung-Russell Diagram
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Jacco Th. van Loon
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As the opening review to the focus meeting ``Stellar Behemoths: Red Supergiants across the Local Universe, I here provide a brief introduction to red supergiants, setting the stage for subsequent contributions. I highlight some recent activity in the field, and identify areas of progress, areas where progress is needed, and how such progress might be achieved.
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