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Examples of HII Regions

Examples of HII Regions. Note the characteristic red color from excited hydrogen Note the OB associations when visible Note the columns of dust that are aligned toward the OB association. California Nebula and the Pleiades. Cat’s Paw Nebula. The Cone Nebula. Emission Nebula in NGC 3603.

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Examples of HII Regions

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  1. Examples of HII Regions • Note the characteristic red color from excited hydrogen • Note the OB associations when visible • Note the columns of dust that are aligned toward the OB association

  2. California Nebula and the Pleiades

  3. Cat’s Paw Nebula

  4. The Cone Nebula

  5. Emission Nebula in NGC3603

  6. Emission Nebula in Carina (NGC 3372)

  7. Emission Nebula in NGC 2264

  8. Emission Nebula in NGC 281

  9. Emission Nebula in NGC 6188

  10. Emission Nebula in NGC 6599

  11. HII Region in Ara

  12. Horse Head Nebula in Orion

  13. Close-up of Horse Head Nebula

  14. Lagoon Nebula

  15. The North America Nebula

  16. The Omega Nebula

  17. The Orion Nebula

  18. The Rosette Nebula

  19. The Keyhole Nebula

  20. The Trifid Nebula

  21. Emission Nebula in NGC 3603

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