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Fakhri Zahedy

Title: Assistant Professor

Department: Physics

College: College of Science

Curriculum Vitae

Curriculum Vitae Link

Education

  • PhD, University of Chicago, 2019
    Major: Astronomy and Astrophysics
    Dissertation: Multi-pronged Studies of Diffuse Halo Gas around Massive Quiescent Galaxies
  • MS, University of Chicago, 2015
    Major: Astronomy and Astrophysics

Current Scheduled Teaching

PHYS 6940.757Individual ResearchSpring 2025
PHYS 3950.001Observational AstronomySpring 2025 Syllabus
PHYS 4950.753Senior ThesisSpring 2025
PHYS 4955.750Senior Thesis CapstoneSpring 2025
PHYS 5910.760Special ProblemsSpring 2025

Previous Scheduled Teaching

PHYS 6950.771Doctoral DissertationFall 2024
PHYS 4950.750Senior ThesisFall 2024
PHYS 1062.400Stars and the UniverseFall 2024 Syllabus SPOT

Published Intellectual Contributions

    Conference Proceeding

  • Snyder, B., Zahedy, F. (2023). What Happens to the Cool Gaseous Halos of Massive Galaxies in Dense Environments?. American Astronomical Society Meeting Abstracts. 55 (2) 175--08.
  • Snyder, B., Zahedy, F. (2022). Resolving the Role of Environment in Shaping the Circumgalactic Media Around Massive Galaxies. American Astronomical Society Meeting\# 240. 54 (6) 141--07.
  • Zahedy, F. (2019). Dissecting the Circumgalactic Medium of Massive Elliptical Galaxies. American Astronomical Society Meeting Abstracts\# 233. 233 137--02.
  • Journal Article

  • Chen, M.C., Chen, H., Rauch, M., Qu, Z., Johnson, S.D., Schaye, J., Rudie, G.C., Jennifer, I., Li, H., Liu, Z.W., others. (2024). An Ensemble Study of Turbulence in Extended QSO Nebulae at z≈ 0.5--1. The Astrophysical Journal. 962 (1) 98. IOP Publishing.
  • Solhaug, E., Chen, H., Chen, M.C., Zahedy, F., Gronke, M., Hamel-Bravo, M.J., Bayliss, M.B., Gladders, M.D., L\'opez, Sebasti\'an, Tejos, Nicol\'as. (2024). Deciphering spatially resolved Lyman-alpha profiles in reionization analogs: the Sunburst Arc at cosmic noon. Other.
  • Johnson, S.D., Liu, Z.W., Jennifer, I., Li, H., Schaye, J., Greene, J.E., Cantalupo, S., Rudie, G.C., Qu, Z., Chen, H., others. (2024). Discovery of optically emitting circumgalactic nebulae around the majority of UV-luminous quasars at intermediate redshift. The Astrophysical Journal. 966 (2) 218. IOP Publishing.
  • Deka, P., Gupta, N., Chen, H., Johnson, S., Noterdaeme, P., Combes, F., Boettcher, E., Balashev, S., Emig, K., J\'ozsa, GIG, others. (2024). MALS discovery of a rare H I 21 cm absorber at z~ 1.35: Origin of the absorbing gas in powerful active galactic nuclei. Other. 687 A50. EDP Sciences.
  • Kumar, S., Chen, H., Qu, Z., Chen, M.C., Zahedy, F., Johnson, S.D., Muzahid, S., Cantalupo, S. (2024). On the Nature of the C IV-bearing Circumgalactic Medium at z\~ 1. Other.
  • Chen, H., Zahedy, F. (2024). The Circumgalactic Medium. Other.
  • Li, J.I., Johnson, S.D., Boettcher, E., Cantalupo, S., Chen, H., Chen, M.C., DePalma, D.R., Mishra, N., Petitjean, P., Qu, Z., others. (2024). The Cosmic Ultraviolet Baryon Survey (CUBS) VIII: Group Environment of the Most Luminous Quasars at $ z$\backslash$approx1$. Other.
  • Mishra, N., Johnson, S.D., Rudie, G.C., Chen, H., Schaye, J., Qu, Z., Zahedy, F., Boettcher, E.T., Cantalupo, S., Chen, M.C., others. (2024). The Cosmic Ultraviolet Baryon Survey (CUBS). IX. The Enriched Circumgalactic and Intergalactic Medium Around Star-forming Field Dwarf Galaxies Traced by O vi Absorption. The Astrophysical Journal. 976 (1) 149. IOP Publishing.
  • Qu, Z., Chen, H., Johnson, S.D., Rudie, G.C., Zahedy, F., DePalma, D., Schaye, J., Boettcher, E.T., Cantalupo, S., Chen, M.C., others. (2024). The Cosmic Ultraviolet Baryon Survey (CUBS). VII. On the Warm-hot Circumgalactic Medium Probed by O vi and Ne viii at 0.4≲ z≲ 0.7. The Astrophysical Journal. 968 (1) 8. IOP Publishing.
  • Jennifer, I., Li, H., Johnson, S.D., Boettcher, E., Cantalupo, S., Chen, H., Chen, M.C., Depalma, D.R., Liu, Z.W., Mishra, N., others. (2024). The Cosmic Ultraviolet Baryon Survey (CUBS). VIII. Group Environment of the Most Luminous Quasars at z≈ 1. The Astrophysical Journal. 965 (2) 143. IOP Publishing.
  • Chen, M.C., Chen, H., Rauch, M., Qu, Z., Johnson, S.D., Schaye, J., Rudie, G.C., Li, J.I., Zahedy, F., Cantalupo, S., others. (2023). An ensemble study of turbulence in extended QSO nebulae at $ z$\backslash$approx0. 5$--1. Other.
  • Chen, H., Johnson, S., Rudie, G.C., Boettcher, E., Cantalupo, S., Chen, M., Faucher-Giguere, C., Greene, J.E., Li, J.I., Lopez, S., others. (2023). CONTACT: Circumgalactic Observations of Nuv-shifted Transitions Across Cosmic Time. Other. 17517.
  • Chen, M.C., Chen, H., Rauch, M., Qu, Z., Johnson, S.D., Li, J.I., Schaye, J., Rudie, G.C., Zahedy, F., Boettcher, E., others. (2023). Empirical constraints on the turbulence in QSO host nebulae from velocity structure function measurements. Monthly Notices of the Royal Astronomical Society. 518 (2) 2354--2372. Oxford University Press.
  • Nishigaki, M., Ouchi, M., Nakajima, K., Ono, Y., Rauch, M., Isobe, Y., Harikane, Y., Narita, K., Zahedy, F., Xu, Y., others. (2023). EMPRESS. XI. SDSS and JWST Search for Local and z~ 4--5 Extremely Metal-poor Galaxies (EMPGs): Clustering and Chemical Properties of Local EMPGs. The Astrophysical Journal. 952 (1) 11. IOP Publishing.
  • Qu, Z., Chen, H., Rudie, G.C., Johnson, S.D., Zahedy, F., DePalma, D., Boettcher, E., Cantalupo, S., Chen, M.C., Cooksey, K.L., others. (2023). The Cosmic Ultraviolet Baryon Survey (CUBS)--VI. Connecting physical properties of the cool circumgalactic medium to galaxies at z≈ 1. Monthly Notices of the Royal Astronomical Society. 524 (1) 512--528. Oxford University Press.
  • Chen, H., Qu, Z., Rauch, M., Chen, M.C., Zahedy, F., Johnson, S.D., Schaye, J., Rudie, G.C., Boettcher, E., Cantalupo, S., others. (2023). The Cosmic Ultraviolet Baryon Survey: Empirical Characterization of Turbulence in the Cool Circumgalactic Medium. Other. 955 (1) L25. IOP Publishing.
  • Huang, Y., Chen, H., Shectman, S., Johnson, S., Zahedy, F., Helsby, J., Gauthier, J., Thompson, I. (2023). VizieR Online Data Catalog: Census of circumgalactic MgII at redshift z=< 0.5 (Huang+, 2021). Other. J--MNRAS.
  • Nishigaki, M., Ouchi, M., Nakajima, K., Ono, Y., Rauch, M., Isobe, Y., Harikane, Y., Narita, K., Zahedy, F., Xu, Y., Yajima, H., Fukushima, H., Hirai, Y., Kim, J.H., Inoue, S., Kusakabe, H., Lee, C., Nagao, T., Onodera, M. (2023). EMPRESS. XI. SDSS and JWST Search for Local and z ∼4–5 Extremely Metal-poor Galaxies (EMPGs): Clustering and Chemical Properties of Local EMPGs. The Astrophysical Journal. 952 (1) 11. American Astronomical Society. https://doi.org/10.3847/1538-4357/accf14
  • Zahedy, F., Rauch, M., Boettcher, E., Chen, H., Chen, M., Kulkarni, V.P., Nelson, D., Rudie, G.C. (2022). A High-Definition View of the Baryon Cycle in Massive Galaxies. Other. 17146.
  • Boettcher, E., Gupta, N., Chen, H., Chen, M.C., J\'ozsa, Gyula IG, Rudie, G.C., Cantalupo, S., Johnson, S.D., Balashev, S., Combes, Fran\ccoise, others. (2022). Discovery of a Damped Ly$\alpha$ Absorber Originating in a Spectacular Interacting Dwarf Galaxy Pair at z= 0.026. Other. 926 (2) L33. IOP Publishing.
  • Nakajima, K., Ouchi, M., Xu, Y., Rauch, M., Harikane, Y., Nishigaki, M., Isobe, Y., Kusakabe, H., Nagao, T., Ono, Y., others. (2022). EMPRESS. V. Metallicity diagnostics of galaxies over 12+ log (O/H)≃ 6.9--8.9 established by a local galaxy census: preparing for JWST spectroscopy. Other. 262 (1) 3. IOP Publishing.
  • Xu, Y., Ouchi, M., Rauch, M., Nakajima, K., Harikane, Y., Sugahara, Y., Komiyama, Y., Kusakabe, H., Fujimoto, S., Isobe, Y., others. (2022). EMPRESS. VI. Outflows Investigated in Low-mass Galaxies with M∗= 104--107 M⊙: Weak Feedback in Low-mass Galaxies?. The Astrophysical Journal. 929 (2) 134. IOP Publishing.
  • Qu, Z., Chen, H., Rudie, G.C., Zahedy, F., Johnson, S.D., Boettcher, E., Cantalupo, S., Chen, M.C., Cooksey, K.L., DePalma, D., others. (2022). The Cosmic Ultraviolet Baryon Survey (CUBS) V: on the thermodynamic properties of the cool circumgalactic medium at z≲ 1. Monthly Notices of the Royal Astronomical Society. 516 (4) 4882--4897. Oxford University Press.
  • Huang, Y., Chen, H., Shectman, S.A., Johnson, S.D., Zahedy, F., Helsby, J.E., Gauthier, Jean-Ren\'e, Thompson, I.B. (2021). A complete census of circumgalactic Mg II at redshift z≲ 0.5. Monthly Notices of the Royal Astronomical Society. 502 (4) 4743--4761. Oxford University Press.
  • Zahedy, F., Chen, H., Cooper, T.M., Boettcher, E., Johnson, S.D., Rudie, G.C., Chen, M.C., Cantalupo, S., Cooksey, K.L., Faucher-Gigu\`ere, Claude-Andr\'e, others. (2021). The Cosmic Ultraviolet Baryon Survey (CUBS)--III. Physical properties and elemental abundances of Lyman-limit systems at z< 1. Monthly Notices of the Royal Astronomical Society. 506 (1) 877--902. Oxford University Press.
  • Cooper, T.J., Rudie, G.C., Chen, H., Johnson, S.D., Zahedy, F., Chen, M.C., Boettcher, E., Walth, G.L., Cantalupo, S., Cooksey, K.L., others. (2021). The Cosmic Ultraviolet Baryon Survey (CUBS)--IV. The complex multiphase circumgalactic medium as revealed by partial Lyman limit systems. Monthly Notices of the Royal Astronomical Society. 508 (3) 4359--4384. Oxford University Press.
  • Boettcher, E., Chen, H., Zahedy, F., Cooper, T.J., Johnson, S.D., Rudie, G.C., Chen, M.C., Petitjean, P., Cantalupo, S., Cooksey, K.L., others. (2021). The Cosmic Ultraviolet Baryon Survey (CUBS). II. Discovery of an H2-bearing DLA in the Vicinity of an Early-type Galaxy at z= 0.576. The Astrophysical Journal. 913 (1) 18. IOP Publishing.
  • Zahedy, F., Chen, H., Boettcher, E., Rauch, M., French, K.D., Zabludoff, A.I. (2020). Evidence for Late-time Feedback from the Discovery of Multiphase Gas in a Massive Elliptical at z= 0.4. Other. 904 (1) L10. IOP Publishing.
  • Gaikwad, P., Rauch, M., Haehnelt, M.G., Puchwein, E., Bolton, J.S., Keating, L.C., Kulkarni, G., Ir\vsi\vc, Vid, Ba\~nados, Eduardo, Becker, G.D., others. (2020). Probing the thermal state of the intergalactic medium at z> 5 with the transmission spikes in high-resolution Ly $\alpha$ forest spectra. Monthly Notices of the Royal Astronomical Society. 494 (4) 5091--5109. Oxford University Press.
  • Chen, H., Zahedy, F., Boettcher, E., Cooper, T.M., Johnson, S.D., Rudie, G.C., Chen, M.C., Walth, G.L., Cantalupo, S., Cooksey, K.L., others. (2020). The Cosmic Ultraviolet Baryon Survey (CUBS)--I. Overview and the diverse environments of Lyman limit systems at z< 1. Monthly Notices of the Royal Astronomical Society. 497 (1) 498--520. Oxford University Press.
  • Chen, H., Boettcher, E., Johnson, S.D., Zahedy, F., Rudie, G.C., Cooksey, K.L., Rauch, M., Mulchaey, J.S. (2019). A Giant Intragroup Nebula Hosting a Damped Lya Absorber at z= 0.313. Other.
  • Zahedy, F., Chen, H., Johnson, S.D., Pierce, R.M., Rauch, M., Huang, Y., Weiner, B.J., Gauthier, Jean-Ren\'e. (2019). Characterizing circumgalactic gas around massive ellipticals at z~ 0.4--II. Physical properties and elemental abundances. Monthly Notices of the Royal Astronomical Society. 484 (2) 2257--2280. Oxford University Press.
  • Chen, H., Johnson, S.D., Straka, L.A., Zahedy, F., Schaye, J., Muzahid, S., Bouch\'e, Nicolas, Cantalupo, S., Marino, R.A., Wendt, M. (2019). Characterizing circumgalactic gas around massive ellipticals at z≈ 0.4--III. The galactic environment of a chemically pristine Lyman limit absorber. Monthly Notices of the Royal Astronomical Society. 484 (1) 431--441. Oxford University Press.
  • Voit, G., Babul, A., Babyk, I., Bryan, G., Chen, H., Donahue, M., Fielding, D., Gaspari, M., Li, Y., McDonald, M., others. (2019). Circumgalactic Gas and the Precipitation Limit. Other.
  • Connor, T., Zahedy, F., Chen, H., Cooper, T.J., Mulchaey, J.S., Vikhlinin, A. (2019). COS observations of the cosmic web: a search for the cooler components of a hot, X-ray identified filament. Other. 884 (1) L20. IOP Publishing.
  • Rudie, G.C., Chen, H., Newman, A.B., Johnson, S.D., Simcoe, R.A., Boettcher, E.T., Cooper, T.J., Keres, D., Jones, T.A., Anges-Alcazar, D., others. (2019). Observing Galaxies and Dissecting their Baryon Cycle at Cosmic Noon. Other. 51 (3) 148.
  • Zahedy, F., Rauch, M., Chen, H., Carswell, R.F., Stalder, B., Stark, A.A. (2019). Probing IGM accretion on to faint Ly$\alpha$ emitters at z~ 2.8. Monthly Notices of the Royal Astronomical Society. 486 (1) 1392--1403. Oxford University Press.
  • Chen, H., Johnson, S.D., Rudie, G.C., Simcoe, R.A., Boettcher, E., Faucher-Gigu\`ere, Claude-Andr\'e, Fielding, D., Hamden, E.T., Hummels, C.B., Mulchaey, J.S., others. (2019). Tracking the Baryon Cycle in Emission and in Absorption. Other. 51 (3) 329.
  • Voit, G.M., Donahue, M., Zahedy, F., Chen, H., Werk, J., Bryan, G.L., O’Shea, B.W. (2019). Circumgalactic Pressure Profiles Indicate Precipitation-limited Atmospheres for M * ∼ 109–1011.5 M . The Astrophysical Journal. 879 (1) L1. American Astronomical Society. https://doi.org/10.3847/2041-8213/ab2766
  • Chen, H., Zahedy, F., Johnson, S.D., Pierce, R.M., Huang, Y., Weiner, B.J., Gauthier, Jean-Ren\'e. (2018). Characterizing circumgalactic gas around massive ellipticals at z~ 0.4--I. Initial results. Monthly Notices of the Royal Astronomical Society. 479 (2) 2547--2563. Oxford University Press.
  • Chen, H., Johnson, S.D., Zahedy, F., Rauch, M., Mulchaey, J.S. (2017). Gauging Metallicity of Diffuse Gas under an Uncertain Ionizing Radiation Field. Other. 842 (2) L19. IOP Publishing.
  • Zahedy, F., Chen, H., Rauch, M., Zabludoff, A. (2017). HST Detection of Extended Neutral Hydrogen in a Massive Elliptical at z= 0.4. Other. 846 (2) L29. IOP Publishing.
  • Zahedy, F., Chen, H., Gauthier, Jean-Ren\'e, Rauch, M. (2017). On the radial profile of gas-phase Fe/$\alpha$ ratio around distant galaxies. Monthly Notices of the Royal Astronomical Society. 466 (1) 1071--1081. Oxford University Press.
  • Zahedy, F. (2017). Resolving the Multiphase ISM of an Elliptical Galaxy at z 0.4. Other. 15250.
  • Chen, H., Hennawi, J., Johnson, S., Liang, C., Zahedy, F. (2016). Differentiating Gas Infall and Outflows with Resolved Star Formation Morphology. Other. 14667.
  • Zahedy, F., Chen, H., Rauch, M., Wilson, M.L., Zabludoff, A. (2016). Probing the cool interstellar and circumgalactic gas of three massive lensing galaxies at z= 0.4--0.7. Monthly Notices of the Royal Astronomical Society. 458 (3) 2423--2442. Oxford University Press.
  • Zahedy, F., Chen, H., Rauch, M., Zabludoff, A. (2016). Resolving Fe-rich Neutral ISM in a Massive Quiescent Galaxy at z 0.4. Other. 14751.
  • Hunter, D.A., Zahedy, F., Bowsher, E.C., Wilcots, E.M., Kepley, A.A., Gaal, V. (2011). MAPPING THE EXTENDED H i DISTRIBUTION OF THREE DWARF GALAXIES. The Astronomical Journal. 142 (5) 173. IOP Publishing.
  • Ph.D. Thesis

  • Zahedy, F. (2019). Multi-pronged Studies of Diffuse Halo Gas around Massive Quiescent Galaxies. The University of Chicago.

Contracts, Grants and Sponsored Research

    Sponsored Research

  • Zahedy, F. (Principal), "A High-Definition View of the Baryon Cycle in Massive Galaxies," sponsored by AURA/Space Telescope Science Institute (NASA), Federal, $163863 Funded. (2024).
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Overall
Summative Rating
Challenge and
Engagement Index
Response Rate

out of 5

out of 7
%
of
students responded
  • Overall Summative Rating (median):
    This rating represents the combined responses of students to the four global summative items and is presented to provide an overall index of the class’s quality. Overall summative statements include the following (response options include a Likert scale ranging from 5 = Excellent, 3 = Good, and 1= Very poor):
    • The course as a whole was
    • The course content was
    • The instructor’s contribution to the course was
    • The instructor’s effectiveness in teaching the subject matter was
  • Challenge and Engagement Index:
    This rating combines student responses to several SPOT items relating to how academically challenging students found the course to be and how engaged they were. Challenge and Engagement Index items include the following (response options include a Likert scale ranging from 7 = Much higher, 4 = Average, and 1 = Much lower):
    • Do you expect your grade in this course to be
    • The intellectual challenge presented was
    • The amount of effort you put into this course was
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    • Your involvement in course (doing assignments, attending classes, etc.) was
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