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Leo P: How Many Metals can a Very Low-Mass, Isolated Galaxy Retain?
Kristen B. W. McQuinn, Evan D. Skillman, Andrew Dolphin +7
Leo P is a gas-rich dwarf galaxy with an extremely low gas-phase oxygen abundance (3% solar). The isolated nature of Leo P enables a quantitative measurement of metals lost solely…
CARMA CO Observations of Three Extremely Metal-Poor, Star-Forming Galaxies
Steven R. Warren, Edward Molter, John M. Cannon +11
We present sensitive CO (J = 1 - 0) emission line observations of three metal-poor dwarf irregular galaxies Leo P (Z ~ 3% Z_Solar), Sextans A (Z ~ 7.5% Z_Solar), and Sextans B (Z ~…
Searching for Optical Counterparts to Ultra-compact High Velocity Clouds: Possible Detection of a Counterpart to AGC 198606
William Janesh, Katherine L. Rhode, John J. Salzer +6
We report on initial results from a campaign to obtain optical imaging of a sample of Ultra Compact High Velocity Clouds (UCHVCs) discovered by the ALFALFA neutral hydrogen (HI) su…
Leo P: An Unquenched Very Low-Mass Galaxy
Kristen B. W. McQuinn, Evan D. Skillman, Andrew Dolphin +8
Leo P is a low-luminosity dwarf galaxy discovered through the blind HI Arecibo Legacy Fast ALFA (ALFALFA) survey. The HI and follow-up optical observations have shown that Leo P is…
(Almost) Dark HI Sources in the ALFALFA Survey: The Intriguing Case of HI1232+20
Steven Janowiecki, Lukas Leisman, Gyula Jozsa +7
We report the discovery and follow-up observations of a system of three objects identified by the ALFALFA extragalactic HI survey, cataloged as (almost) dark extragalactic sources,…
Characterizing the Star Formation of the Low-Mass SHIELD Galaxies from Hubble Space Telescope Imaging
Kristen. B. W. McQuinn, John M. Cannon, Andrew E. Dolphin +8
The Survey of HI in Extremely Low-mass Dwarfs (SHIELD) is an on-going multi-wavelength program to characterize the gas, star formation, and evolution in gas-rich, very low-mass gal…