C-19 stream members

Stellar ejecta gradually enrich the gas out of which subsequent stars form, making the least chemically enriched stellar systems direct fossils of structures formed in the early...恒星抛射物质会逐步增丰后续恒星诞生所依托的气体介质，令化学丰度最低的恒星系统成为早期形成的天体结构的直接化石。