HI Spectral Line Imaging of Three SHIELD Galaxies

Jacob Hetrick, John M. Cannon, Elizabeth A. K. Adams*, Riccardo Giovanelli, Martha P. Haynes, Steven Janewiecki, Michael Jones, Lukas Leisman, Kristen B. McQuinn, Katherine Rhode, John Salzer, Evan Skillman

*Corresponding author for this work

Research output: Contribution to conferencePaperAcademic


The ALFALFA blind HI survey has populated the low-mass end of the HI mass function for the first time, allowing an unprecedented opportunity to explore the physical properties of the galaxies that inhabit this extreme portion of parameter space. Using the now-complete ALFALFA dataset, we have constructed the "Survey of HI in Extremely Low-mass Dwarfs" ("SHIELD"), a complete sample of 82 galaxies that provides a unique opportunity to further our understanding of these cosmologically important systems. Here we present new VLA imaging of the final 3 of the 82 sources to be observed at low angular resolution in the HI spectral line: AGC215284, AGC731448, and AGC732041 (program VLA/18A-177). We compare the HI images to ground-based H-alpha imaging in order to examine the star formation properties of each system.

Original languageEnglish
Publication statusPublished - 1-Jan-2019
EventAmerican Astronomical Society, AAS Meeting #233 - Seattle, Washington, United States
Duration: 6-Jan-201910-Jan-2019


ConferenceAmerican Astronomical Society, AAS Meeting #233
Country/TerritoryUnited States
CitySeattle, Washington

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