Tianwen Group
Hangzhou Dianzi University · Astronomy & Astrophysics
Tianwen (天问, "Heavenly Questions") is a vibrant Astronomy & Astrophysics group at
Hangzhou Dianzi University. We integrate observations, simulations, and machine learning
to explore the Milky Way's structure, stellar kinematics, chemical enrichment,
and hierarchical stellar systems — from wide binaries to the intriguing
"Stellar Snake", alongside studies of stellar parameter determination and host-star-planet connections. We also develop innovative astronomical techniques,
including the AI-powered spectral visualization and analysis platform (SpecZoo), and pursue active research
programs in radio astronomy. All driven by curiosity, and powered by code/data.
Happy New Year 2026
2026 – The Year of the Fire Horse – is the time to truly go full throttle!
Our New Working Place
Weekly Meeting Takes Place Here
Zhejiang Branch of NADC
Zhejiang Branch of National Astronomical Data Center (NADC)
The Summer School in 2025
The International Summer School for 21 cm Cosmology at Xi'an
The Stellar Snake Serials
The Stellar Snake Serials
View all photos →
(more in our gallery)
Highlighted & Latest News
The Stellar Snake series represents a systematic investigation of extended,
kinematically coherent stellar complexes in the solar neighbourhood.
The Wide binaries are powerful probes of stellar formation, Galactic dynamics, and dark matter on small scales.
An AI-driven platform for spectral analysis and visualization, empowering astronomical research, education, and competitions. For details, see our paper.
This intensive 14-day (July 2nd to 15th, 2025, in Xi'an Sanxi, China) summer school integrates theoretical foundations, observational techniques, and cutting-edge research in 21cm cosmology.
People
Faculty
Professor
Juyong Zhang
Professor
Rong Li
Professor
Junnna Shang
Professor
Associate Professor
Qinlong Li
Ph.D.
Students
Xiangming Yang
Ph.D. student
Ph.D. student
Haoran Chen
Ph.D. student
Na Li
M.S. student
Sujie Guo
M.S. student
Jiahuan Feng
M.S. student
Xin Liang
M.S. student
Fangding Li
M.S. student
Jia Wang
M.S. student
Kunyu Fu
M.S. student
Chongnan Hu
M.S. student
Shuangyi Sun
M.S. student
Fukun Zhang
M.S. student
Alumni
Yixi Tao
2023–2026
Yuanhao Pu
2023–2026
Jiapeng Li
2023–2026
Yunyi Zhang
2023–2026
Chengcheng Xie
2023–2026
Research (Selected)
Stellar Kinematics
Wide Binaries & Multiples
“Stellar Snake”
Galactic Structure
SpecZoo · Spectral AI
Big Data Astronomy
Astronomical Techniques & Methods
- “Constraining dark matter density profiles in UFDs with wide binaries: forecast for the Chinese Space Station Survey Telescope” MNRAS, 2026 #1
- “The Stellar 'Snake'. III. Coevolution of Stars and Molecular Clouds Unveiled by Gaia, MWISP, and LAMOST” ApJS, 2026 #2
- “Lithium in Wide Binaries: Effective Temperature Governs Depletion while Rotation Plays a Minor Role” arXiv, 2026 #3
- “Emergence of a Lithium Dip in ~35 Myr 'Snake' Open Clusters” ApJ, 2026 #4
- “SpecZoo: An AI-Powered Platform for Spectral Analysis and Visualization in Science and Education” Universe, 2026 #5
- “Wide binary evaporation by dark solitons: implications from the GAIA catalog” JCAP, 2025 #8
- “The Stellar Snake - II: The Mass Function” MNRAS, 2024 #10
- “North-South asymmetries in the Galactic thin disc associated with the vertical phase spiral as seen using LAMOST-Gaia stars” MNRAS, 2024 #11
- “Design and implementation of a scalable correlator based on ROACH2 + GPU cluster for tianlai 96-dual-polarization antenna array” Frontiers in Astronomy and Space Sciences, 2024 #12
- “Discovery of two rotational modulation periods from a young hierarchical triple system” SCPMA, 2023 #15
- “The Stellar 'Snake' - I. Whole Structure and Properties” MNRAS, 2022 #20
- “Precise Ages of Field Stars from White Dwarf Companions in Gaia DR2” ApJS, 2021 #24
- “Discovery of a Young Stellar Snake with Two Dissolving Cores in the Solar Neighborhood” ApJ, 2020 #27
- “The Separation Distribution of Ultra-Wide Binaries across Galactic Populations” ApJS, 2020 #28
- “The Extended Gaia-PS1-SDSS (GPS1+) Proper Motion Catalog” ApJS, 2020 #30
- “Discovery of an equal-mass 'twin' binary population reaching 1000+ AU separations” MNRAS, 2019 #31
- “Time Stamps of Vertical Phase Mixing in the Galactic Disk from LAMOST/Gaia Stars” ApJL, 2018 #35
- “A Gaia-PS1-SDSS (GPS1) Proper Motion Catalog Covering 3/4 of the Sky” ApJS, 2017 #36
- “Peculiar in-plane velocities in the outer disc of the Milky Way” RAA, 2017 #37
- “The Stellar Kinematics in the Solar Neighborhood from LAMOST Data” ApJ, 2015 #44
- “Exploring the total Galactic extinction with SDSS BHB stars” A&A, 2014 #50