Constraints on the H i Mass for NGC 1052-DF2

  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},
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… 

The ultra-diffuse dwarf galaxies NGC 1052-DF2 and 1052-DF4 are in conflict with standard cosmology

Recently van Dokkum et al. reported that the galaxy NGC 1052-DF2 (DF2) lacks dark matter if located at 20 Mpc from Earth. In contrast, DF2 is a dark-matter-dominated dwarf galaxy with a normal

Tidal Distortions in NGC1052-DF2 and NGC1052-DF4: Independent Evidence for a Lack of Dark Matter

Two ultra-diffuse galaxies in the same group, NGC1052-DF2 and NGC1052-DF4, have been found to have little or no dark matter and to host unusually luminous globular cluster populations. Such low-mass

A Scenario for Ultradiffuse Satellite Galaxies with Low Velocity Dispersions: The Case of [KKS 2000]04

  • A. Nusser
  • Physics
    The Astrophysical Journal
  • 2020
A scenario for achieving a low velocity dispersion for the galaxy [KKS 2000]04 (aka NGC 1052-DF2) and similar galaxies is presented. A progenitor halo corresponding to a z = 0 halo of mass and a low

A distance of 13 Mpc resolves the claimed anomalies of the galaxy lacking dark matter

The claimed detection of a diffuse galaxy lacking dark matter represents a possible challenge to our understanding of the properties of these galaxies and galaxy formation in general. The galaxy,

Refracting into ultra-diffuse galaxy NGC 1052-DF2 by passing near the centre of NGC 1052

  • Ran Huo
  • Physics
    Monthly Notices of the Royal Astronomical Society: Letters
  • 2020
The recent observation of the ultra-diffuse galaxy NGC 1052-DF2 shows a galaxy may lack dark matter, which becomes a challenge to the standard structure formation theory. Here, we show that such

Stellar content, planetary nebulae, and globular clusters of [KKS2000]04 (NGC 1052-DF2)

[KKS2000]04 (NGC1052-DF2) has become a controversial and well-studied galaxy after the claims suggesting a lack of dark matter and the presence of an anomalously bright globular cluster (GC) system

The case for strangulation in low-mass hosts: DDO 113

We investigate the case for environmental quenching of the Fornax-mass satellite DDO 113, which lies only 9 kpc in projection from its host, the Large-Magellanic-Cloud-mass galaxy NGC 4214. DDO 113

On the stellar kinematics and mass of the Virgo ultradiffuse galaxy VCC 1287

Here, we present a kinematical analysis of the Virgo cluster ultradiffuse galaxy (UDG) VCC 1287 based on data taken with the Keck Cosmic Web Imager (KCWI). We confirm VCC 1287’s association both

Galaxies lacking dark matter in the Illustris simulation

Context. Any viable cosmological model in which galaxies interact predicts the existence of primordial and tidal dwarf galaxies (TDGs). In particular, in the standard model of cosmology (ΛCDM),

A new formulation of the external field effect in MOND and numerical simulations of ultra-diffuse dwarf galaxies – application to NGC 1052-DF2 and NGC 1052-DF4

The ultra-diffuse dwarf galaxy NGC 1052-DF2 (DF2) has ten (eleven) measured globular clusters (GCs) with a line-of-sight velocity dispersion of $\sigma=7.8^{+5.2}_{-2.2}\,$km/s



The Distance of the Dark Matter Deficient Galaxy NGC 1052–DF2

We recently inferred that the galaxy NGC 1052–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 luminous elliptical

The ultra-diffuse galaxy NGC 1052-DF2 with MUSE

The so-called ultra-diffuse galaxy NGC 1052-DF2 was announced to be a galaxy lacking dark matter based on a spectroscopic study of its constituent globular clusters. Here we present the first


We examine the H i content and environment of all of the Local Group dwarf galaxies (Mtot < 1010 M☉), including the numerous newly discovered satellites of the Milky Way and M31. All of the new

A dearth of atomic hydrogen in NGC 1052-DF2

  • Aditya Chowdhury
  • Physics
    Monthly Notices of the Royal Astronomical Society: Letters
  • 2018
The recently claimed discovery of an ultra-diffuse galaxy lacking dark matter has important implications for alternate theories to dark matter as well as models of galaxy formation within the


We present new upper limits on the neutral hydrogen (H i) content within the stellar half-light ellipses of 15 Galactic dwarf spheroidal galaxies (dSphs), derived from pointed observations with the


We investigate the dwarf (MB > −16) galaxies in the Virgo cluster in the radio, optical, and ultraviolet regimes. Of the 365 galaxies in this sample, 80 have been detected in H i by the Arecibo

The H I content of the recently discovered field dwarf galaxy APPLES 1

We present observations in a search for neutral hydrogen associated with the recently detected field dwarf galaxy APPLES 1, performed with the Parkes radiotelescope. The observed radio spectrum shows

Atomic Gas in Blue Ultra Diffuse Galaxies around Hickson Compact Groups

We have found the atomic gas (H i) reservoirs of the blue ultra diffuse galaxy (UDG) candidates identified by Róman and Trujillo in images near Hickson Compact Groups (HCGs). We confirm that all of

The HI content of isolated ultra-diffuse galaxies: A sign of multiple formation mechanisms?

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-161-1, and SECCO-dI-2.

VCC 2062: an old Tidal Dwarf Galaxy in the Virgo Cluster?

Context. Numerical simulations predict the existence of old Tidal Dwarf Galaxies (TDGs) that would have survived several Gyr after the collision lying at their origin. Such survivors, which would by