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28 March 2024
 
  » arxiv » 1708.6356

 Article overview


The Canada-France Imaging Survey: First results from the u-band component
Rodrigo Ibata ; Alan McConnachie ; Jean-Charles Cuillandre ; Nicholas Fantin ; Misha Haywood ; Nicolas F. Martin ; Piere Bergeron ; Volker Beckmann ; Edouard Bernard ; Piercarlo Bonifacio ; Elisabetta Caffau ; Raymond Carlberg ; Patrick Côté ; Rémi Cabanac ; Scott Chapman ; Pierre-Alain Duc ; Florence Durret ; Benoît Famaey ; Sébastien Frabbro ; Stephen Gwyn ; Francois Hammer ; Vanessa Hill ; Michael J. Hudson ; Ariane Lançon ; Geraint Lewis ; Khyati Malhan ; Paola di Matteo ; Henry McCracken ; Simona Mei ; Yannick Mellier ; Julio Navarro ; Sandrine Pires ; Chris Pritchet ; Celine Reylé ; Harvey Richer ; Annie C. Robin ; Rubén Sánchez Jannsen ; Marcin Sawicki ; Douglas Scott ; Vivien Scottez ; Kristine Spekkens ; Else Starkenburg ; Guillaume Thomas ; Kim Venn ;
Date 21 Aug 2017
AbstractThe Canada-France Imaging Survey (CFIS) will map the northern high Galactic latitude sky in the $u$-band ("CFIS-u", 10,000$, { m deg^2}$) and in the $r$-band ("CFIS-r", 5,000$, { m deg^2}$), enabling a host of stand-alone science investigations, and providing some of the ground-based data necessary for photometric redshift determination for the Euclid mission. In this first contribution we present the $u$-band component of the survey, describe the observational strategy, and discuss some first highlight results, based on approximately one third of the final area. We show that the Galactic anticenter structure is distributed continuously along the line of sight, out to beyond 20 kpc, and possesses a metallicity distribution that is essentially identical to that of the outer disk sampled by APOGEE. This suggests that it is probably a buckled disk of old metal-rich stars, rather than a stream or a flare. We also discuss the future potential for CFIS-u in discovering star-forming dwarf galaxies around the Local Group, the characterization of the white dwarf and blue straggler population of the Milky Way, as well as its sensitivity to low-surface brightness structures in external galaxies.
Source arXiv, 1708.6356
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