RCW 58: 恒星风塑造的星云
2023年2月8日 Stellar Wind-Shaped Nebula RCW 58 Image Credit & Copyright: Mike Selby & Mark Hanson; Text: Natalia Lewandowska (SUNY Oswego) Explanation: Imagine traveling to a star about 100 times as massive as our Sun, a million times more luminous, and with 30 times the surface temperature. Such stars exist, and some are known as Wolf Rayet (WR) stars, named after French astronomers Charles Wolf and Georges Rayet. The central star in this image is WR 40 which is located toward the constellation of Carina. Stars like WR 40 live fast and die young in comparison with the Sun. They quickly exhaust their core hydrogen supply, move on to fusing heavier core elements, and expand while ejecting their outer layers via high stellar winds. In this…