# FORTY-SEVEN MILKY WAY-SIZED, EXTREMELY DIFFUSE GALAXIES IN THE COMA CLUSTER

@article{vanDokkum2014FORTYSEVENMW,
title={FORTY-SEVEN MILKY WAY-SIZED, EXTREMELY DIFFUSE GALAXIES IN THE COMA CLUSTER},
author={Pieter G. van Dokkum and Roberto G. Abraham and Allison Merritt and Jielai Zhang and Marla C. Geha and Charlie Conroy},
journal={The Astrophysical Journal Letters},
year={2014},
volume={798}
}
• Published 29 October 2014
• Physics
• The Astrophysical Journal Letters
We report the discovery of 47 low surface brightness objects in deep images of a 3° × 3° field centered on the Coma cluster, obtained with the Dragonfly Telephoto Array. The objects have central surface brightness μ(g, 0) ranging from 24–26 mag arcsec−2 and effective radii reff = 3″–10″, as measured from archival Canada–France–Hawaii Telescope images. From their spatial distribution we infer that most or all of the objects are galaxies in the Coma cluster. This relatively large distance is…
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## References

SHOWING 1-10 OF 49 REFERENCES

• Physics
• 2008
The discovery of three new dwarf galaxies in the Local Group are reported on, which indicate that the full parameter space occupied by dwarf galaxies is not yet sampled, although this is an essential prerequisite for successfully and consistently linking these systems to the predicted cosmological dark matter substructure.
• Physics
• 2014
We explore the internal structure of red-sequence galaxies in the Coma cluster across a wide range of luminosities (−17 > Mg > −22) and cluster-centric radii (0 < rcluster < 1.3 r200). We present the
• Physics
• 2006
Aims. We report on a search for faint ( R  total magnitude fainter than 21) and low surface brightness galaxies ( R  central surface brightness fainter than ~24) (fLSBs) in a $0.72 \times 0.82$ deg 2
• Physics
• 2010
We present a wide field survey of satellite galaxies in M106 (NGC 4258) covering a 1:7 � × 2 � field around M106 using Canada-France-Hawaii Telescope/MegaCam. We find 16 satellite galaxy candidates
• Physics
• 2005
We present deep optical imaging of the inner ~1.°5 × 1.°5 of the Virgo Cluster to search for diffuse intracluster light (ICL). Our image reaches a 1 σ depth of μV = 28.5 mag arcsec-2, which is 1.5
• Physics
• 2012
Studies of dwarf spheroidal (dSph) galaxies with statistically significant sample sizes are still rare beyond the Local Group, since these low surface brightness objects can only be identified with
• Physics
• 2004
We report on a complete CCD imaging survey of 226 elliptical galaxies in the North-East quadrant of the Virgo cluster, representative of the properties of giant and dwarf elliptical galaxies in this
The Advanced Camera for Surveys (ACS) on the Hubble Space Telescope (HST) has been used to image two fields in the core of the Virgo Cluster that contain a number of dwarf elliptical galaxies. The
• Physics
• 1996
We present the results of a search for low surface brightness galaxies (hereafter LSBs) in the Coma cluster. Bernstein et al. report on deep CCD observations in R of a 7.5 by 7.5 arcminute region in
• Physics
• 1997
In twenty years, low surface brightness (LSB) galaxies have evolved from being an idiosyncratic notion to being one of the major baryonic repositories in the Universe. The story of their discovery