Using observations from the Guo Shoujing Telescope and ESA’s Gaia Space Telescope, a chinese scientific team found a new mobile cluster near the Orion Nebula in the Milky Way, containing a total of 206 member stars, 74 of which are pre-sequence stars, or primary stars with pre-hydrogen in the center, and the rest G and K stars.
Analysis shows that the main presequence stars in the member star form in the Orion Nebula, while the Stars in the G-and K-stars and the Orion Nebula are in different evolutionary sequences, not born in the Orion Nebula.
It is understood that the primary presequence stars in the mobile cluster confirm that some of the stars formed in the Orion nebula are spreading outwards, while G-shaped and K-shaped stars may have gathered together with the peak of the spiral arm density wave, which is now spreading away as the peak of the density wave departs.
Astronomers say the discovery of the moving star group provides observational evidence for studying the possibility that the Milky Way cantilever density waves drive stars to gather, triggering the collapse of the nebula.
In addition, the discovery is important for understanding the formation, structure and evolution of the Milky Way.
The results have been published in the international academic journal Astronomy.