Quiescent ultra-diffuse galaxies in the field originating from backsplash orbits

  title={Quiescent ultra-diffuse galaxies in the field originating from backsplash orbits},
  author={Jos{\'e} A Benavides and Laura V. Sales and Mario G. Abadi and Annalisa Pillepich and Dylan Nelson and Federico Marinacci and Michael C. Cooper and R{\"u}ediger Pakmor and Paul Torrey and Mark Vogelsberger and Lars E. Hernquist},
  journal={Nature Astronomy},
Ultra-diffuse galaxies (UDGs) are the lowest-surface brightness galaxies known, with typical stellar masses of dwarf galaxies but sizes similar to larger galaxies like the Milky Way. The reason for their extended sizes is debated, with suggested internal processes like angular momentum, feedback or mergers versus external mechanisms or a combination of both. Observationally, we know that UDGs are red and quiescent in groups and clusters while their counterparts in the field are blue and star… 

The Odd Dark Matter Halos of Isolated Gas-rich Ultradiffuse Galaxies

We analyze circular velocity profiles of seven ultradiffuse galaxies (UDGs) that are isolated and gas-rich. Assuming that the dark matter halos of these UDGs have a Navarro–Frenk–White (NFW) density

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

The Nature of Low-surface-brightness Galaxies in the Hyper Suprime-Cam Survey

We present the statistical redshift distribution of a large sample of low-surface-brightness (LSB) galaxies identified in the first 200 deg2 of the Hyper Suprime-Cam Strategic Survey Program. Through

Ultra-diffuse galaxies on the run



The origin of ultra diffuse galaxies: stellar feedback and quenching.

It is shown that outflows that dynamically heat galactic stars, together with a passively aging stellar population after imposed quenching, naturally reproduce the observed population of red UDGs, without the need for high spin haloes, or dynamical influence from their host cluster.

Formation of ultra-diffuse galaxies in the field and in galaxy groups

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The Globular Cluster Systems of Ultra-diffuse Galaxies in the Coma Cluster

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We use the Romulus25 cosmological simulation volume to identify the largest-ever simulated sample of field ultra-diffuse galaxies (UDGs). At z=0, we find that isolated UDGs have average star

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The major morphological features of a galaxy are thought to be determined by the assembly history and net spin of its surrounding dark halo. In the simplest scenario, disc galaxies form predominantly

The quiescent fraction of isolated low surface brightness galaxies: observational constraints

Understanding the formation and evolution of low surface brightness galaxies (LSBGs) is critical for explaining their wide-ranging properties. However, studies of LSBGs in deep photometric surveys

The formation of ultra-diffuse galaxies in cored dark matter haloes through tidal stripping and heating

Author(s): Carleton, T; Errani, R; Cooper, M; Kaplinghat, M; Penarrubia, J; Guo, Y | Abstract: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society.

Ultradiffuse galaxies: the high-spin tail of the abundant dwarf galaxy population

Recent observations have revealed the existence of an abundant population of faint, low surface brightness (SB) galaxies, which appear to be numerous and ubiquitous in nearby galaxy clusters,

Extreme chemical abundance ratio suggesting an exotic origin for an ultradiffuse galaxy

Ultra diffuse galaxies are a population of extended galaxies but with relatively low luminosities. The origin of these objects remains unclear, largely due to the observational challenges of the low