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Discovery of Strongly Lensed Quasars in the Ultraviolet Near Infrared Optical Northern Survey (UNIONS)
J. H. H. Chan, C. Lemon, F. Courbin +13
We report the discovery of five new doubly-imaged lensed quasars from the first 2500 square degrees of the ongoing Canada-France Imaging Survey (CFIS), which is a component of the…
Ram Pressure Candidates in UNIONS
Ian D. Roberts, Laura C. Parker, Stephen Gwyn +17
We present a search for disturbed, candidate ram pressure stripping galaxies across more than 50 spectroscopically selected SDSS groups and clusters. Forty-eight ram pressure candi…
Uncovering fossils of the distant Milky Way with UNIONS: NGC 5466 and its stellar stream
Jaclyn Jensen, Guillaume Thomas, Alan W. McConnachie +9
We examine the spatial clustering of blue horizontal branch (BHB) stars from the -band of the Canada-France Imaging Survey (CFIS, a component of the Ultraviolet Near-In…
The Pristine Dwarf-Galaxy survey -- IV. Probing the outskirts of the dwarf galaxy Boötes I
Nicolas Longeard, Pascale Jablonka, Anke Arentsen +12
We present a new spectroscopic study of the dwarf galaxy Bootes I (Boo I) with data from the Anglo-Australian Telescope and its AAOmega spectrograph together with the Two Degree Fi…
Solo dwarfs IV: Comparing and contrasting satellite and isolated dwarf galaxies in the Local Group
Clare Higgs, Alan McConnachie
We compare and contrast the stellar structures of isolated Local Group dwarf galaxies, as traced by their oldest stellar populations, with the satellite dwarf galaxies of the Milky…
The Mass and Age Distribution of Halo White Dwarfs in the Canada-France Imaging Survey
Nicholas J. Fantin, Patrick Côté, Alan W. McConnachie +6
We present optical spectroscopy for 18 halo white dwarfs identified using photometry from the Canada-France Imaging Survey and Pan-STARRS1 DR1 3 survey combined with astrometry…