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 objects are indeed UDGs with effective radii kpc. Three of them are likely to be gravitationally b...

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