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Researchers used NASA’s Hubble Space Telescope to examine the massive star two-and-a-half years before it exploded into a supernova, discovering that it lacked hydrogen. ....
Discovery provides insights into galaxy mergers in the early universe Astronomers have discovered two pairs of quasars in the distant universe. April 26, 2021 Astronomers have found two close pairs of quasars in the distant universe. The quasars are closer together than any pair of quasars found so far away, providing strong evidence for the existence of supermassive black hole pairs as well as insights into galaxy mergers in the early universe. The results are published in Quasars are the intensely bright cores of distant galaxies, powered by the feeding frenzies of supermassive black holes. These energetic objects profoundly affect galaxy formation and evolution, making observations of quasar pairs in the early universe a unique way for astronomers to investigate the evolution of merging galaxies. Quasar pairs also provide a natural laboratory in which to study the processes leading to the formation of binary supermassive black holes. ....
ALMA detects rotating infant galaxy with assist from gravitational lens By (0) The galaxy cluster RXCJ0600-2007, seen in an image taken by the NASA/ESA Hubble Space Telescope and combined with gravitational lensing images of the distant galaxy RXCJ0600-z6, is shown 12.4 billion light-years away about 900 million years after the Big Bang. Photo by ALMA (ESO/NAOJ/NRAO)/Fujimoto et al./NASA/ESA Hubble Space Telescope April 22 (UPI) One of the world s most powerful radio telescopes, Chile s Atacama Large Millimeter/submillimeter Array, has identified a rotating infant galaxy in the distant universe with the help of a gravitational lens. ....
Gemini North observations help identify rotational speed limit for brown dwarfs Three brown dwarfs, often called “failed stars,” are spinning faster than any others. Astronomers have discovered the most rapidly rotating brown dwarfs three brown dwarfs that each complete a full rotation roughly once every hour. The rate is so extreme that if they rotated any faster, they could come close to tearing apart. Brown dwarfs are, simply put, failed stars. They form like stars but are less massive and more like giant planets. Astronomers first measured the rotation speeds of these brown dwarfs using the Spitzer Space Telescope and confirmed them with follow-up observations with the Gemini North telescope on Maunakea in Hawaii and the Magellan Baade telescope in Chile. Gemini North is one of the pair of telescopes that make up the international Gemini Observatory, a program of NSF’s NOIRLab. ....
Gemini North observations help identify rotational speed limit for brown dwarfs Three brown dwarfs, often called failed stars, are spinning faster than any others. April 19, 2021 Astronomers have discovered the most rapidly rotating brown dwarfs three brown dwarfs that each complete a full rotation roughly once every hour. The rate is so extreme that if they rotated any faster, they could come close to tearing apart. Brown dwarfs are, simply put, failed stars. They form like stars but are less massive and more like giant planets. Astronomers first measured the rotation speeds of these brown dwarfs using the Spitzer Space Telescope and confirmed them with follow-up observations with the Gemini North telescope on Maunakea in Hawaii and the Magellan Baade telescope in Chile. Gemini North is one of the pair of telescopes that make up the international Gemini Observatory, a program of NSF s NOIRLab. ....