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Deep neutral hydrogen observations of Leo T with the Westerbork Synthesis Radio Telescope
Elizabeth A. K. Adams, Tom A. Oosterloo
Leo T is the lowest mass gas-rich galaxy currently known and studies of its gas content help us understand how such marginal galaxies survive and form stars. We present deep neutra…
MeerKAT and the Smallest Galaxies
Elizabeth A. K. Adams, Tom A. Oosterloo
(Abridged) On small scales, there exists a tension between observations of dwarf galaxies and predictions for low-mass dark matter halos from simulations (often referred to as the…
An Overview of the MHONGOOSE Survey: Observing Nearby Galaxies with MeerKAT
W. J. G. de Blok, E. A. K. Adams, P. Amram +65
MHONGOOSE is a deep survey of the neutral hydrogen distribution in a representative sample of 30 nearby disk and dwarf galaxies with HI masses from 10^6 to ~10^{11} M_sun, and lumi…
The MeerKAT International GHz Tiered Extragalactic Exploration (MIGHTEE) Survey
Matt J. Jarvis, A. R. Taylor, I. Agudo +54
The MIGHTEE large survey project will survey four of the most well-studied extragalactic deep fields, totalling 20 square degrees to Jy sensitivity at Giga-Hertz frequencies, as…
FRB 121102 is coincident with a star forming region in its host galaxy
C. G. Bassa, S. P. Tendulkar, E. A. K. Adams +16
We present optical, near- and mid-infrared imaging of the host galaxy of FRB 121102 with the Gemini North telescope, the Hubble Space Telescope and the Spitzer Space Telescope. The…
The HI content of isolated ultra-diffuse galaxies: A sign of multiple formation mechanisms?
E. Papastergis, E. A. K. Adams, A. J. Romanowsky
We report on the results of radio observations in the 21 cm emission line of atomic hydrogen (HI) of four relatively isolated ultra-diffuse galaxies (UDGs): DGSAT I, R-127-1, M-161…
(Almost) Dark Galaxies in the ALFALFA Survey: Isolated HI Bearing Ultra Diffuse Galaxies
Lukas Leisman, Martha P. Haynes, Steven Janowiecki +9
We present a sample of 115 very low optical surface brightness, highly extended, HI-rich galaxies carefully selected from the ALFALFA survey that have similar optical absolute magn…
Detection of an Optical Counterpart to the ALFALFA Ultra-compact High Velocity Cloud AGC 249525
William Janesh, Katherine L. Rhode, John J. Salzer +5
We report on the detection at 98% confidence of an optical counterpart to AGC 249525, an Ultra-Compact High Velocity Cloud (UCHVC) discovered by the ALFALFA blind neutral hydrog…
The Host Galaxy and Redshift of the Repeating Fast Radio Burst FRB 121102
Shriharsh P. Tendulkar, Cees Bassa, James M. Cordes +21
The precise localization of the repeating fast radio burst (FRB 121102) has provided the first unambiguous association (chance coincidence probability ) of…