Ray Garner

Ray Garner

TAMU Astronomy Postdoctoral Researcher

Texas A&M University

Biography

Hello! My name is Ray Garner and I am a postdoc in the Astronomy Group at Texas A&M University in College Station, Texas. I am working with Dr. Rob Kennicutt on the Star formation, Ionized Gas, and Nebular Abundances Legacy Survey (SIGNALS), a survey of HII regions across ~35 galaxies. You can check out the survey paper here.

Before I arrived in College Station, I was a graduate student at Case Western Reserve University in Cleveland, Ohio working with Prof. Chris Mihos on a detailed analysis of the Pinwheel Galaxy (M101) and its small satellite group using the deep, wide-field, narrowband imaging capabilities of the Burrell Schmidt 24/36-inch telescope.

Briefly, my thesis utilizes narrowband images of Hα, Hβ, [OIII]λλ4959,5007, and [OII]λλ3726,3729. These images allowed me to search the entire M101 Group for outlying, intragroup star-forming regions (finding none), measure the oxygen abundance gradient of M101 (suggesting a broken gradient at R25), and constrain stellar ages throughout the entire disk (finding a very dynamic spiral pattern). You can read more about that research below, or click here.

Before attending CWRU, I was a student at Furman University in Greenville, South Carolina where I graduated with a B.S. in Physics, Summa Cum Laude. While there, I completed research in general relativity with Dr. Bill Baker (ret.). During the summer of 2017, I attended a Research Experience for Undergraduates (REU) at Indiana University in Bloomington, Indiana. There, I worked on ionized gas kinematics of nearby, low-mass galaxies with the late Dr. Liese van Zee.

Interests
  • Galaxy evolution
  • Star formation
  • Nebular diagnostics
  • Spiral structure
Education
  • PhD in Astronomy, 2023

    Case Western Reserve University

  • BS in Physics, 2018

    Furman University

Recent Publications

(2025). HII Regions Filling Factor in NGC 628 and Spatial Association with Dusty Filaments. In prep.

(2025). SIGNALS of Giant HII Regions: Resolved Ionization & Abundance Properties of NGC 604. In prep.

(2025). Ionized gas in NGC 4258: Exploring the AGN - Star formation connection. Accepted to MNRAS.

arXiv

(2025). Optical Strong Line Ratios Cannot Distinguish Between Stellar Populations and Accreting Black Holes at High Ionization Parameters and Low Metallicities. Submitted to ApJ.

arXiv

Recent & Upcoming Talks

Contact

  • ray.garner at tamu.edu
  • 4242 TAMU, College Station, TX 77843