Hello! I'm a postdoc in the Department of Astronomy at UC Berkeley. I'm interested in the cosmic baryon cycle that connects a galaxy and its circumgalactic medium (CGM). The cosmic baryonic cycle includes gas inflows, outflows, and recycling that extend over tens and hundreds of kiloparsecs. My research focuses on constructing a coherent picture of how baryons are cycled and recycled in the CGM. In particular, I'm interested in characterizing the sub-kpc physical processes that can only be gleaned from observations of nearby galaxies. (My CV Here)

I'm an observer. My research extensively uses UV spectroscopy and HI 21cm observations (e.g., GALFA-HI, HI4PI). I'm also familiar with Keck/DEIMOS observations which I use to study diffuse gas in nearby galaxies. Meanwhile, I have built a strong track record of working with theorists and analyzing simulation data to compare with my observations.

Recent Publication Highlights

M. Putman, Y. Zheng, A. Price-Whelan, J. Grcevich, A. Johnson, E. Tollerud, J. Peek, The Gas Content and Stripping of Local Group Dwarf Galaxies 2021, ApJ, 913, 53

H. V. Bish, J. K. Werk, J. Peek, Y. Zheng, M.Putman, The QuaStar Survey: Detecting Hidden Low-Velocity Gas in the Milky Way's Circumgalactic Medium, 2021, ApJ, 912, 8B

Y. Zheng, et al., Characterizing the Circumgalactic Medium of the Lowest-Mass Galaxies: A Case Study of IC 1613, 2020, ApJ, 905, 133

Y. Zheng, et al., Figuring Out Gas & Galaxies in Enzo (FOGGIE). III. The Mocky Way: Investigating Biases in Observing the Milky Way's Circumgalactic Medium, 2020, ApJ, 896, 143Z

Recent Talks & Conferences

08/2022, Lecturer, the 1st “High-Resolution X-ray and UV (HiXUV) Spectroscopy Capability Building Workshops”, Virtual Workshop
06/2022, Invited Talk, “Galactic and Extragalactic High Velocity Clouds”, A Green Bank Observatory Workshop, WV
04/2022, Colloquium, Department of Physics, University of North Texas, TX
03/2022, the Arthur M. Wolfe Symposium in Astrophysics, Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA
11/2021, “The 1st KIAA Forum on Gas in Galaxies for Early Career Scientists”, Kavli Institute for Astronomy and Astrophysics, PKU, China
10/2021, Invited Speaker at "Hot Universe Baryon Surveyor", Xiamen, China
07/2021, Invited Guest Speaker at Riverside Astronomical Society, California
01-03/2021, "Fundamentals of Gaseous Halos", Virtual Workshop at KITP

Outreach & DEI Initiatives

I am committed to advancing diversity, equity, inclusion, and belonging in my working space for my students and colleagues.


Along my career trajectory, I was fortunate to have many role models, who have encouraged, supported, and inspired me to continue to pursue my science dreams and ambitions despite many disheartening situations. I wish to do the same for future generations. I believe everyone has the right to pursue science regardless of their race, gender, age, ability, sexuality, immigration status, mother tongue, and/or other identities. A deviation from the presumed social norms in a white dominant culture does not exclude a person from pursuing science. I have so far participated in many outreach activities to make science more accessible to the public. I have also led several DEI initiatives at UC Berkeley to improve the working environment for underrepresented minorities and to humanize science.

Contact Me

yongzheng_at_berkeley.edu
Department of Astronomy, 501 Campbell Hall #3411
University of California Berkeley, Berkeley, CA 94720-3411