activity
20162026
most citedA High Stellar Velocity Dispersion and ~100 Globular Clusters for the Ultra Diffuse Galaxy Dragonfly 44

257 citations · 1.5k across the 55 of their papers we have counts for

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Showing 2018Show all

6 papers · 1 filter

astro-ph.GA2018

COSMOS-DASH: The Evolution of the Galaxy Size-Mass Relation Since z~3 from new Wide Field WFC3 Imaging Combined with CANDELS/3DHST

Lamiya Mowla, Pieter van Dokkum, Gabriel Brammer +11

We present COSMOS-Drift And SHift (DASH), a Hubble Space Telescope WFC3 imaging survey of the COSMOS field in the H_160 filter. The survey comprises 456 individual WFC3 pointings c…

astro-ph.GA2018

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…

astro-ph.GA2018

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…

astro-ph.GA2018

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…

astro-ph.GA2018

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…

astro-ph.GA2018

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…