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Exploring Clusters: Ages and Distances of Stars

Dive into the fascinating world of star clusters, uncovering their common properties such as distance, age, and chemical composition, while also exploring unique features like spectral types and luminosity class. Understand how interstellar dust affects the appearance of stars, making them seem cooler or farther away. Delve into specific clusters like NGC 2264 and Pleiades, each revealing intriguing insights about their distance and age. Immerse yourself in the mysteries of M3, a globular cluster that holds secrets of its 10-billion-year-old existence. Discover the wonders of star clusters and their individual characteristics.

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Exploring Clusters: Ages and Distances of Stars

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  1. Lab 9 – Ages and Distances to Clusters

  2. Stars in a Cluster • Common Properties • Distance • Age • Chemical composition • Different Properties • Spectral Types (temperature) • Luminosity Class (size) • Mass

  3. Interstellar Dust • Reddens Light (makes stars appear cooler) • Dims Light (makes stars appear further away)

  4. NGC 2264 - Young Cluster distance - 2,600 ly age - 2 million years

  5. Pleiades - Open Cluster

  6. M3 - Globular Cluster distance - 32,000 ly age - 10 billion years old

  7. 5.55 420 0.15 0.05 -0.1 M45 5.7 138 129 5x107

  8. The End.

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