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JWST and VLT search for the signature of the First Stars
18 4月 2024The first stars, known as Population III stars, were born approximately 100 million years after the Big Bang when the universe was less than 1% of its present age. Population III stars are of fundamental importance to the initial mass function (IMF) of stars, which determines how the universe has evolved over time (see Fig. 1). As Population III stars are shortly lived, they rapidly enrich the ...
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Bridging the Gap between Luminous Red Novae and Common Envelope Evolution
17 4月 2024Luminous red novae (LRNe) and common envelope evolution (CEE) are closely related astrophysical phenomena and evolutionary processes that are not well understood. Among them, CEE is a crucial stage in binary stellar evolution. Close compact binaries, Type Ia supernovae, hot sub-dwarfs, and gravitational wave sources may all be the product of CEE. On the other hand, LRNe are bright transients wi...
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Exoplanets & Planet Formation Workshop 2023 held in Yanqing
27 12月 2023The Exoplanets & Planet Formation Workshop 2023, or EPF2023 for short, was held in Yanqing District, Beijing between December 16 and 19. This conference was hosted by the Department of Astronomy at Tsinghua University and attended by about 130 people from all around the world.Group photo of EPF2023 participantsExoplanets and planet formation have become one of the fastest growing fields in astr...
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A workshop on galaxy formation and cosmology held
15 11月 2023The Department of Astronomy at Tsinghua University held a one-day workshop on November 15, 2023 focused on galaxy formation and cosmology. The event was part of the National Natural Science Foundation's Innovative Research Group project on "Galactic Structure, Formation, and Evolution." Attendees included Mr. He Cheng, Director of the National Natural Science Foundation's Division of Astronomy,...
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The 2023 Department Strategic Meeting held
15 9月 2023On September 14, 2023, the annual strategic meeting of the Department of Astronomy was held at the Faculty Development Center of Tsinghua University. Fourteen faculty members attended the meeting, and Academician Li Tipei was also invited. The participants had extensive discussions on the challenges and opportunities faced by the Department, the faculty recruitment, student training, computing ...
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Accreting Planets Leave Chemical Footprints in Protoplanetary Disks
28 8月 2023Protoplanetary disks serve as the cradles of planet formation, often revealing captivating features such as bright rings and dark gaps in both dust continuum and gas emission maps. These features have traditionally been attributed planets, which shape the disk by gap-opening and altering its rotation profiles, effects that can potentially be observed.A new study led by Tsinghua Department of As...
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