448 citations · 759 across the 9 of their papers we have counts for
9 papers
Imaging Spectropolarimetry -- A New Observing Mode on the Hubble Space Telescope's Advanced Camera for Surveys
Nimish P. Hathi, Dean C. Hines, Yotam Cohen +2
Imaging spectropolarimetry is a new observing mode on the Advanced Camera for Surveys (ACS) aboard the Hubble Space Telescope (HST) that was commissioned in Cycle 30 and is availab…
Does the galaxy NGC1052-DF2 falsify Milgromian dynamics?
Pavel Kroupa, Hosein Haghi, Behnam Javanmardi +6
A great challenge in present-day physics is to understand whether the observed internal dynamics of galaxies is due to dark matter matter or due to a modification of the law of gra…
The Distance of the Dark Matter Deficient Galaxy NGC1052-DF2
Pieter van Dokkum, Shany Danieli, Yotam Cohen +2
We recently inferred that the galaxy NGC1052-DF2 has little or no dark matter and a rich system of unusual globular clusters. We assumed that the galaxy is a satellite of the lumin…
A Deficit of Dark Matter from Jeans Modeling of the Ultra-diffuse Galaxy NGC 1052-DF2
Asher Wasserman, Aaron J. Romanowsky, Jean Brodie +5
The discovery of the ultra-diffuse galaxy NGC 1052-DF2 and its peculiar population of star clusters has raised new questions about the connections between galaxies and dark matter…
The Dragonfly Nearby Galaxies Survey. V. HST/ACS Observations of 23 Low Surface Brightness Objects in the Fields of NGC1052, NGC1084, M96, and NGC4258
Yotam Cohen, Pieter van Dokkum, Shany Danieli +8
We present HST/ACS imaging of twenty-three very low surface brightness (=25-27.5) galaxies detected in the fields of four nearby galaxy groups. These objects were selected…
A Revised Velocity for the Globular Cluster GC-98 in the Ultra Diffuse Galaxy NGC1052-DF2
Pieter van Dokkum, Yotam Cohen, Shany Danieli +9
We recently published velocity measurements of luminous globular clusters in the galaxy NGC1052-DF2, concluding that it lies far off the canonical stellar mass - halo mass relation…
The Maybe Stream: A Possible Cold Stellar Stream in the Ultra-Diffuse Galaxy NGC1052-DF2
Roberto Abraham, Shany Danieli, Pieter van Dokkum +10
We report tentative evidence for a cold stellar stream in the ultra-diffuse galaxy NGC1052-DF2. If confirmed, this stream (which we refer to as "The Maybe Stream") would be the fir…
An enigmatic population of luminous globular clusters in a galaxy lacking dark matter
Pieter van Dokkum, Yotam Cohen, Shany Danieli +10
We recently found an ultra diffuse galaxy (UDG) with a half-light radius of R_e = 2.2 kpc and little or no dark matter. The total mass of NGC1052-DF2 was measured from the radial v…
A galaxy lacking dark matter
Pieter van Dokkum, Shany Danieli, Yotam Cohen +9
Studies of galaxy surveys in the context of the cold dark matter paradigm have shown that the mass of the dark matter halo and the total stellar mass are coupled through a function…