Discovery of a 21 Myr old stellar population in the Orion complex
Discovery of a 21 Myr old stellar population in the Orion complex
Context. The Orion complex is arguably the most studied star-forming region in the Galaxy. While stars are still being born in the Orion nebula, the oldest part was believed to be no more than 13 Myr old. Aims. In order to study the full hierarchy of star formation across the …