NGC 2004
NGC 2004 is an open cluster located in the Large Magellanic Cloud (LMC), a dwarf galaxy orbiting the Milky Way. It is a young, populous cluster characterized by a significant population of massive, luminous, blue stars. Its young age, estimated to be between 20 and 30 million years old, makes it a valuable target for studying the formation and evolution of massive stars in a low-metallicity environment. NGC 2004 contains numerous Be stars, which are rapidly rotating stars that exhibit emission lines in their spectra. The cluster's location in the LMC provides a different chemical composition compared to open clusters within the Milky Way, which allows astronomers to test models of stellar evolution under varying conditions. Studying NGC 2004 helps astronomers understand the impact of metallicity on star formation, stellar lifetimes, and the overall evolution of stellar populations in other galaxies.