Constraints on the H i Mass for NGC 1052-DF2

@article{Sardone2019ConstraintsOT,
  title={Constraints on the H i Mass for NGC 1052-DF2},
  author={Amy Sardone and D. J. Pisano and Sarah Burke-Spolaor and Joshua L. Mascoop and Nihan S. Pol},
  journal={The Astrophysical Journal Letters},
  year={2019},
  volume={871}
}
We report deep, single-dish 21 cm observations of NGC 1052-DF2, taken with the Green Bank Telescope. NGC 1052-DF2, proposed to be lacking in dark matter, is currently classified as an ultra-diffuse galaxy in the NGC 1052 group. We do not detect the galaxy, and derive an upper limit on the H i mass. The galaxy is extremely gas poor, and we find that a detection at a distance of 19 Mpc and using a line width of 3.2 km s−1 would have an upper limit of M⊙. At this mass limit, the gas fraction of… 

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