@article{0101826bc6704874860273cd71fdcb46,
title = "Strong lensing by edge-on galaxies in UNIONS",
abstract = "Current searches for galaxy-scale strong lenses focus on massive Luminous Red Galaxies but tend to overlook late-type lenses, in part because of their smaller Einstein radii. We take advantage of the superb seeing of the UNIONS survey in the r-band to perform an imaging search for edge-on late-type lenses. We use Convolutional Neural Networks trained with simulated observations composed of images of real galaxies from UNIONS and real sources from HST. Using 3600 square degrees of the survey we test ∼7 million galaxies and find 56 systems with obvious signs of lensing. In addition, we empirically estimate the true prevalence of lenses in UNIONS by visually inspecting 120, 000 randomly chosen images in the survey. We find that the number of edge-on lenses we discover with CNNs is compatible with these estimates.",
keywords = "galaxies: spiral, Gravitational lensing: strong, methods: data analysis, surveys",
author = "Barroso, {J. A.Acevedo} and B. Cl{\'e}ment and F. Courbin and R. Gavazzi and C. Lemon and Karina Rojas and E. Savary",
note = "Funding Information: This work is supported by the Swiss National Science Foundation (SNSF). Based on observations obtained with MegaPrime/MegaCam, a joint project of CFHT and CEA/DAPNIA, at the Canada-France-Hawaii Telescope (CFHT) which is operated by the National Research Council (NRC) of Canada, the Institut National des Science de l'Univers of the Centre National de la Recherche Scientifique (CNRS) of France, and the University of Hawaii. The observations at the Canada-France-Hawaii Telescope were performed with care and respect from the summit of Maunakea which is a significant cultural and historic site. Publisher Copyright: {\textcopyright} The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.",
year = "2024",
month = mar,
day = "4",
doi = "10.1017/S174392132300371X",
language = "English",
volume = "18",
pages = "17--22",
journal = "Proceedings of the International Astronomical Union",
issn = "1743-9213",
publisher = "Cambridge University Press",
}