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Embedded cluster

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X-ray view of Orion showing the Trapezium embedded cluster.

Embedded clusters are stellar clusters that are still encased in its progenitor gas and are therefore areas of active low mass and high mass star formation.

Due to the dense material that surrounds them, they are impervious to optical observation but reveal themselves in other spectra such as in the near infrared and X-rays.

In these spectra, like open stellar clusters for the optical, they may be detected as stellar enhancements above expected galactic background stellar counts[1].

Although many embedded stellar clusters are know to exist, few have specified names. Below named object believed to exist in its vicinity are labelled.

  1. Trapezium cluster
  2. Rho_Ophiuchi_cloud_complex
  3. IRAS 22551+6621
  4. IRAS 22172+5549
  5. IRAS 00070+5549
  1. ^ "A 2MASS study of candidate precursors to UCHII regions". As. {{cite news}}: |access-date= requires |url= (help)