2023年5月25日 · JWST has given us a new look at galaxies as they were in the first few billion years of the universe. Among the newly discovered galaxies is a population of flat, red, extended disks that may have been entirely missed by previous surveys. Dusty …

Little red dots (LRDs) are a class of small, red-tinted galaxies discovered by the James Webb Space Telescope (JWST). [ 1 ] [ 2 ] [ 3 ] Their discovery was published in March 2024, and they are currently poorly understood. [ 4 ]

2022年12月14日 · Astronomers analyzed red spiral galaxies in one of the James Webb Space Telescope's first images, that of the galaxy cluster SMACS J0723

2023年5月24日 · JWST has revealed an intriguing new group of galaxies with flat, red disks that might be the precursors to today's massive galaxies.

2024年11月21日 · Researchers have discovered three ultra-massive galaxies from the universe's first billion years, challenging existing models of star formation. These galaxies, identified with the James Webb Space Telescope, exhibit unusually high star formation rates, suggesting more efficient early galaxy form

2024年1月12日 · Astronomers inadvertently discovered a "dark" galaxy rich in gas but lacking stars when they pointed the Green Bank Telescope in the wrong direction.

2025年1月14日 · In this case, the black hole sheds its gas cocoon, becomes bluer and less red, and loses its LRD status. Additionally, LRDs are not bright in X-ray light, which contrasts with most black holes at lower redshifts. However, astronomers know that at certain gas densities, X-ray photons can become trapped, reducing the amount of X-ray emission.

2019年9月26日 · A combination of their number counts and spatial distribution suggests that these dust-rich galaxies are consistent with those that grow to become the massive red galaxies we observe in the dense...

2025年1月17日 · In general, little red dots represent a galaxy type most common when the universe was about 800 million years old, dropping off after it reached about 1.6 billion years. The dots still provide a handful of curiosities — they don’t emit …

3 天之前 · Astronomers have assembled one of the largest surveys of little red dots (LRDs) ever made, and theorize that a large portion of these mysterious space objects are galaxies with supermassive black ...