2023-08-23 11:13:49
[NTD Times, Beijing time, August 23, 2023]On Monday (August 21), the James Webb Space Telescope (JWST) of NASA (NASA) obtained an image of the beautiful Ring Nebula. About 2,200 light-years away, the “farewell” of a dying star forms the gorgeous Ring Nebula structure. Like the Southern Ring Nebula, one of JWST’s first images, the new Ring Nebula reveals the intricate structure of the final stages of a dying star’s life, providing more information regarding the final stages of a sun-like star’s life cycle. New images from NASA’s James Webb Space Telescope (JWST) with the Near Infrared Camera (NIRCam) show the filamentary structure of the Ring Nebula’s inner ring. (ESA/Webb, NASA, CSA) This image of the Ring Nebula looks like a twisted doughnut. The inner cavity of the nebula takes on shades of blue and green, the inner regions of the rings have orange hues, the outer regions have pink hues, and the inner regions of the rings appear as distinctive filaments. In the middle of the entire structure, there is a star that is approaching the end of its destiny. It will soon become a white dwarf, also known as a “corpse star” because it represents the final stage of stellar evolution. “When we first saw these images, we were struck by the sheer amount of detail in them. The nebula takes its name from this bright ring, which consists of regarding 20,000 clumps of dense molecular hydrogen gas, each with the mass of As big as the Earth,” Roger Wesson of Cardiff University, one of the UK’s top universities, said in a statement. Wesson further explained that planetary nebulae, once thought to be simple round objects with a dying star at their center, were named for their fuzzy, planet-like appearance seen in small telescopes. Thousands of years ago, that star was still a red giant, but was losing most of its mass. In a final farewell, the star’s hot core ionizes, or heats, the outer layers of gas, causing the nebula to glow in colorful light. However, modern observations show that most planetary nebulae exhibit surprisingly complex structures. How can spherical stars create such complex and delicate non-spherical structures? The Ring Nebula is an ideal target for unraveling the mysteries of planetary nebulae. Inside the ring, there is a narrow band of polycyclic aromatic hydrocarbons (PAHs), and outside the bright ring, strange “spikes” can be seen pointing directly away from the central star. These spikes are prominent in the infrared, but in Ha Faintly visible in the Bob Space Telescope image. “Our MIRI images give us the sharpest, clearest view yet of a faint molecular halo outside the bright ring,” Wesson said. New images of the ring nebula from the Webb Space Telescope’s MIRI (Mid-Infrared Instrument) reveal concentric arcs in the outer region of the nebula’s ring. (ESA/Webb, NASA, CSA) JWST captures infrared wavelengths of light (also known as wavelengths of light invisible to the human eye) emitted by the nebula with the Near Infrared Camera (NIRCam) and Mid-Infrared Instrument (MIRI), new image of the Ring Nebula Peculiar details of the concentric features of the outer regions of the nebula’s rings are revealed. Beyond the outer edge of the main ring, there are regarding ten concentric “arcs”. “These rings indicate that there must be a companion star in the system, orbiting at regarding the same distance from the central star as Pluto is from the sun,” Wesson said. It. Previous telescopes did not have enough sensitivity and spatial resolution to reveal this subtle effect.” (Comprehensive report by reporter Li Zhaoxi/Editor in charge: Lin Qing)
1692901607
#Super #dazzling #NASA #Webb #telescope #captures #stage #star #life #ring #nebula #JWST
