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Green Bank Telescope observations of low column density HI around NGC 2997 and NGC 6946
D. J. Pisano
Observations of ongoing HI accretion in nearby galaxies have only identified about 10% of the needed fuel to sustain star formation in these galaxies. Most of these observations ha…
High velocity clouds in the Galactic All Sky Survey I. Catalogue
Vanessa A. Moss, Naomi M. McClure-Griffiths, Tara Murphy +3
We present a catalogue of high-velocity clouds (HVCs) from the Galactic All Sky Survey (GASS) of southern-sky neutral hydrogen, which has 57 mK sensitivity and 1 km/s velocity reso…
Connecting Transitions in Galaxy Properties to Refueling
Sheila J. Kannappan, David V. Stark, Kathleen D. Eckert +12
We relate transitions in galaxy structure and gas content to refueling, here defined to include both the external gas accretion and the internal gas processing needed to renew rese…
Discrete clouds of neutral gas between the galaxies M31 and M33
Spencer A. Wolfe, D. J. Pisano, Felix J. Lockman +2
Spiral galaxies must acquire gas to maintain their observed level of star formation beyond the next few billion years (Leroy et al. 2008). A source of this material may be the gas…
A Pilot for a VLA HI Deep Field
Ximena Fernández, J. H. van Gorkom, Kelley M. Hess +12
High-resolution 21-cm HI deep fields provide spatially and kinematically resolved neutral gas maps at different redshifts, which are key to understanding galaxy evolution across co…