北落师门的尘埃碎片盘
2023年5月11日 Fomalhaut’s Dusty Debris Disk Image Credit: NASA, ESA, CSA, Processing: András Gáspár (Univ. of Arizona), Alyssa Pagan (STScI), Science: A. Gáspár (Univ. of Arizona) et al. Explanation: Fomalhaut is a bright star, a 25 light-year voyage from planet Earth in the direction of the constellation Piscis Austrinus. Astronomers first noticed Fomalhaut’s excess infrared emission in the 1980s. Space and ground-based telescopes have since identified the infrared emission’s source as a disk of dusty debris surrounding the hot, young star related to the ongoing formation of a planetary system. But this sharp infrared image from the James Webb Space Telescope’s MIRI camera reveals details of Fomalhaut’s debris disk never before seen, including a large dust cloud in the outer ring that is possible evidence for…