Jakob M. Helton 🌌
Jakob M. Helton

Astrophysicist | Doctoral Candidate | Science Communicator

About Me

I am a doctoral candidate at the University of Arizona pursuing an M.S. and Ph.D. in astronomy. I have plans to defend my dissertation entitled “At the Break of Cosmic Dawn: Identifying and Understanding the Most Distant Galaxies and Galaxy Clusters with JWST” in May 2025. I spend my time studying (#1) high-redshift galaxies, (#2) high-redshift galaxy clusters, and (#3) the large-scale structure of the Universe. I am a key member of the James Webb Space Telescope (JWST) Advanced Deep Extragalactic Survey (JADES) in addition to the Near Infrared Camera (NIRCam) and Mid-Infrared Instrument (MIRI) Science Teams. My contributions to extragalactic astronomy have been featured in national and international press, and I have worked to share my work and acquired knowledge with the broader community. I have extensive experience in academic research, problem solving, public speaking, and technical writing. In addition to my research, I am also a visual artist. I focus on photography and painting, but I have recently started creating digital images and movies. In the coming years, I am hoping to publish a photography book and get my work featured in an art exhibition.

Download CV
Interests
  • Galaxy Evolution
  • Galaxy Formation
  • High-Redshift Galaxies
  • High-Redshift Galaxy Clusters
  • Large-Scale Structure of the Universe
  • Observational Extragalactic Astronomy
Education
  • M.S. and Ph.D. in Astronomy

    University of Arizona

  • A.B. in Astrophysical Sciences

    Princeton University

My Research

When, how, and why did the first stars, galaxies, and galaxy clusters form? In what ways did large-scale structure influence these first structures? And what sources of radiation reionized the Universe? These questions, which drive modern extragalactic astronomy, are core to my research. Using data from the James Webb Space Telescope (JWST), I have worked to: (#1) identify, characterize, and understand galaxies and galaxy clusters in the very early Universe; while (#2) connecting the physical properties of the most distant known galaxies and galaxy clusters with their large-scale environment. In particular, I have made numerous and impactful contributions toward the selection, photometric redshift determination, physical property inference, and interpretation of galaxies and galaxy clusters at the redshift frontier. I have extensive experience interpreting observations from three out of the four instruments on JWST: the Mid-Infrared Instrument (MIRI), the Near Infrared Camera (NIRCam), and the Near Infrared Spectrograph (NIRSpec), with a specific emphasis in the wide field slitless spectroscopic (WFSS) observing mode of NIRCam.

I believe that sharing knowledge with others, which in turn educates and inspires the future generations of humanity and scientists, is one of the most important and significant activities that we can do as astronomers. To this end, I have spent my time mentoring, teaching, and tutoring local undergraduate students in mathematics and science at both the introductory and advanced level. While an undergraduate student, I co-organized a weekly extragalactic seminar at Princeton University. During graduate school, I co-organized a bi-weekly extragalactic seminar at the University of Arizona, which included lectures and workshops related to using JWST and understanding the high-redshift Universe. I recently started educating amateur astronomers and high school students in Tucson, AZ about JWST. Furthermore, my research related to my help discovering and understanding the most distant known galaxy, JADES-GS-z14-0, has been featured in national and international press, including a blog post from NASA that already has more than one million impressions, and an interview filmed by the University of Arizona that already has more than one thousand views.

First-Author Publications
Complete List of Publications
(2024). To High Redshift and Low Mass: Exploring the Emergence of Quenched Galaxies and Their Environments at 3 < z < 6 in the Ultra-deep JADES MIRI F770W Parallel. The Astrophysical Journal, Volume 975, Issue 1, id.85, 25 pages.
(2024). JADES: Spectroscopic Confirmation and Proper Motion for a T-Dwarf at 2 kpc. The Astrophysical Journal, Volume 975, Issue 1, id.31, 8 pages.
(2024). SMILES: Discovery of Higher Ionizing Photon Production Efficiency in Overdense Regions. eprint arXiv:2410.14804.
(2024). JADES NIRSpec initial data release for the Hubble Ultra Deep Field: Redshifts and line fluxes of distant galaxies from the deepest JWST Cycle 1 NIRSpec multi-object spectroscopy. Astronomy & Astrophysics, Volume 690, id.A288, 32 pages.
(2024). A core in a star-forming disc as evidence of inside-out growth in the early Universe. Nature Astronomy, Advanced Online Publication.
(2024). JADES + JEMS: A Detailed Look at the Buildup of Central Stellar Cores and Suppression of Star Formation in Galaxies at Redshifts 3 < z < 4.5. The Astrophysical Journal, Volume 974, Issue 1, id.135, 27 pages.
(2024). Using JADES NIRCam photometry to investigate the dependence of stellar mass inferences on the IMF in the early universe. Proceedings of the National Academy of Sciences, Volume 121, Issue 42, article id.e2317375121.
(2024). Identification of High-redshift Galaxy Overdensities in GOODS-N and GOODS-S. The Astrophysical Journal, Volume 974, Issue 1, id.41, 17 pages.
(2024). An Investigation Into The Selection and Colors of Little Red Dots and Active Galactic Nuclei. eprint arXiv:2410.00100.
(2024). The eventful life of a luminous galaxy at z = 14: metal enrichment, feedback, and low gas fraction?. eprint arXiv:2409.20533.
Recent Blog Posts

An Interview about JADES-GS-z14-0

Watch an interview with myself and other scientists from the University of Arizona discussing the discovery of JADES-GS-z14-0, the most distant galaxy currently known with a spectroscopically confirmed redshift!

The Discovery of JADES-GS-z14-0

Read more about how myself and other scientists from the JADES Collaboration discovered JADES-GS-z14-0, the most distant galaxy currently known with a spectroscopically confirmed redshift!

Recent Artwork

My Home Movies

Take a look at my home movies!