The Epoch of Reionization(EoR)poses a number of puzzles,including the sufficiency of ionizing radiation,the rapid production of supermassive black holes and the early appearance of abundant metals in larger galaxies.F...The Epoch of Reionization(EoR)poses a number of puzzles,including the sufficiency of ionizing radiation,the rapid production of supermassive black holes and the early appearance of abundant metals in larger galaxies.For the first of these,solutions focus on the main sequence evolution of massive stars,but the second and third puzzles involve the terminal phase of stellar evolution,展开更多
We are familiar with the idea that the elements from which we are made were created in stars, but where does gold come from, to pick on a heavier element？ Thanks to the optical detection of GW170817, reported here fr...We are familiar with the idea that the elements from which we are made were created in stars, but where does gold come from, to pick on a heavier element？ Thanks to the optical detection of GW170817, reported here from the AST3-2 telescope [1], and at other southern telescopes, a day after its detection by LIGO, we are now closer to answering that question with a fascinating story of binary stellar evolution.展开更多
基金The data presented herein were obtained at NOAO’s Cerro Tololo Interamerican Observatory, which is operated by AURA for the U.S. National Science FoundationFunding for the DES Projects has been provided by the DOE and NSF (USA), MISE (Spain), STFC (UK), HEFCE (UK)
文摘The Epoch of Reionization(EoR)poses a number of puzzles,including the sufficiency of ionizing radiation,the rapid production of supermassive black holes and the early appearance of abundant metals in larger galaxies.For the first of these,solutions focus on the main sequence evolution of massive stars,but the second and third puzzles involve the terminal phase of stellar evolution,
文摘We are familiar with the idea that the elements from which we are made were created in stars, but where does gold come from, to pick on a heavier element？ Thanks to the optical detection of GW170817, reported here from the AST3-2 telescope [1], and at other southern telescopes, a day after its detection by LIGO, we are now closer to answering that question with a fascinating story of binary stellar evolution.
