About Me

I'm a second year astronomy graduate student at Texas A&M University, working with Dr. Kim-Vy Tran. My current research involves determining the properties of extreme emission line galaxies at z~3. I received a B.S. in Physics from the University of Texas at Dallas in 2016, working with Dr. Lindsay King and Dr. Michael Kesden. Outside of astronomy, I enjoy reading, writing, music, and travel.


Star Formation Histories of Extreme Emission Line Galaxies at z ~ 3.5 in the ZFOURGE Survey

We analyze the properties of Extreme Emission Line Galaxies (EELGs) identified in the FourStar Galaxy Evolution (ZFOURGE) survey at redshifts 2.5 ≤ z ≤ 4. In this redshift range, ZFOURGE contains photometric data covering rest-frame wavelengths from the UV to the near-IR in the CDFS, COSMOS, and UDS fields. We use the PROSPECTOR-α model to determine properties of our EELGs and compare them to properties of Lyman-break galaxies (LBGs) at similar redshifts. Specifically, we compare stacks of nonparametric star formation histories for EELGs and LBGs. We find that EELGs show little to no star formation until the most recent time bin before observation, when they undergo a strong burst of star formation activity.


I am currently teaching ASTR 102: Observational Astronomy — Course webpage


Eilbott, Riley, Cohn et al. 2017, MNRAS Letters, Detecting binarity of GW150914-like lenses in gravitational microlensing events


Discover, Explore and Enjoy Physics and Engineering (DEEP) — webpage

Mitchell Institute Star Parties — webpage


Email: joncohn@tamu.edu