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Here is homepage of Hongzhi

This Home page will be used to record my daily life and study

Who am I?

PhD student in Space physics, astronomy at Ural Federal University.
Research assistant in Kourovskaya Astronomical Observatory K.A. Barkhatova

Research interest

Who are we? Where do we come from? Where we are going? Studying the formation of stars and planets may provide some insight into the question of 'Where do we come from?'. Stars are born from the gravitational collapse of cold and dense molecular clouds. They experienced many significant physical and chemical processes in their earliest phases involving the infall of the envelope, the formation of disks and outflows, the primary accretion phase leading to the growth of the final star, and the chemical enrichment of the disk, which directly influences planet formation. The forming processes of high-mass stars (>8Msun{_{sun}}) are far less understood than its low-mass counterpart (sun-like stars). My research interestes are studying the formation of the high-mass stars including physical and chemical process. Currently my study are foculs on the molecular clumps associated with cosmic masers.


H. Z. Yu, Andrey M. Sobolev, Sheng-Yuan Liu et al., "ALMA view on the disk/outflow system in the high-mass star-forming region IRAS 18089-1732", 2024, in preparation.

H. Z. Yu, J. S. Zhang, C. Henkel, Y. T. Yan, W. Liu, X. D. Tang, N. Langer, T. C. Luan, J. L. Chen, Y. X. Wang, "Galactic Interstellar Sulfur Isotopes: A Radial 32^{32}S/34^{34}S Gradient?", 2020, ApJ, 899, 145.

J. S. Zhang, W. Liu, Y. T. Yan, H. Z. Yu, J. T. Liu, Y. H. Zheng, D. Romano, Z.-Y. Zhang, J. Z. Wang, J. L. Chen, Y. X. Wang, W. J. Zhang, H. H. Lu, L. S. Chen, Y. P. Zou, H. Q. Yang, T. Wen, and F. S. Lu., "A Systematic Observational Study on Galactic Interstellar Ratio 18^{18}O/17^{17}O. I. C18^{18}O and C17^{17}O J = 1–0 Data Analysis", 2020, ApJS, 249, 6

J. L. Chen, J. S. Zhang, C. Henkel, Y. T. Yan, H. Z. Yu, J. J. Qiu, X. D. Tang, J. Wang, W. Liu, Y. X. Wang, "Interstellar Nitrogen Isotope Ratios: New NH3 Data from the Galactic Center out to the Perseus Arm", 2021, ApJS, 257, 39

Y. T. Yan, C. Henkel, C. Kobayashi, K. M. Menten, Y. Gong, J. S. Zhang, H. Z. Yu, K. Yang, J. J. Xie, and Y. X. Wang, "Direct measurements of carbon and sulfur isotope ratios in the Milky Way", 2023, A&A, 670, A98

Y. X. Wang (汪友鑫), J. S. Zhang (张江水), H. Z. Yu (余鸿智), Y. Wang (王尧), Y. T. Yan (闫耀庭), J. L. Chen (陈家梁), J. Y. Zhao (赵洁瑜), and Y. P. Zou (邹益鹏), "A Possible Chemical Clock in High-mass Star-forming Regions: N(HC3_3N)/N(N2_2H+^+)?", 2023, ApJS, 264, 48

J. Y. Zhao, J. S. Zhang, Y. X. Wang, J. J. Qiu, Y. T. Yan, H. Z. Yu, J. L. Chen, and Y. P. Zou, "A Multitransition Methanol Survey toward a Large Sample of High-mass Star-forming Regions", 2023, ApJS, 266, 29