DESI Strong Lens Foundry III: Keck Spectroscopy for Strong Lenses Discovered Using Residual Neural Networks

  • Shrihan Agarwal (Creator)
  • Xiaosheng Huang (Creator)
  • William Sheu (Creator)
  • Christopher Storfer (Creator)
  • Marcos Tamargo-Arizmendi (Creator)
  • Suchitoto Tabares-Tarquinio (Creator)
  • David Schlegel (Creator)
  • Greg Aldering (Creator)
  • Adam S. Bolton (Creator)
  • Aleksandar Cikota (Creator)
  • Arjun Dey (Creator)
  • Andreas Filipp (Creator)
  • Eric Jullo (Creator)
  • K. J. Kwon (Creator)
  • Saul Perlmutter (Creator)
  • Yiping Shu (Creator)
  • Ezra Sukay (Creator)
  • Nao Suzuki (Creator)
  • Jessica Aguilar (Creator)
  • Steven Ahlen (Creator)
  • Segev BenZvi (Creator)
  • David Brooks (Creator)
  • Todd Claybaugh (Creator)
  • Peter Doel (Creator)
  • Jaime E. Forero-romero (Creator)
  • Enrique Gaztanaga (Creator)
  • Satya Gontcho A. Gontcho (Creator)
  • Gaston Gutierrez (Creator)
  • Klaus Honscheid (Creator)
  • Mustapha Ishak-Boushaki (Creator)
  • Stephanie Juneau (Creator)
  • Robert Kehoe (Creator)
  • Ted Kisner (Creator)
  • Sergey Koposov (Creator)
  • Andrew Lambert (Creator)
  • Martin Landriau (Creator)
  • Laurent Le Guillou (Creator)
  • Axel de la Macorra Pettersson (Creator)
  • Aaron Meisner (Creator)
  • Ramon Miquel (Creator)
  • John Moustakas (Creator)
  • Andrew Myers (Creator)
  • Claire Poppett (Creator)
  • Francisco Prada (Creator)
  • Ignasi Perez-Rafols (Creator)
  • Giancarlo Rossi (Creator)
  • Eusebio Sanchez (Creator)
  • Michael Schubnell (Creator)
  • David Sprayberry (Creator)
  • Gregory Tarle (Creator)
  • Benjamin Weaver (Creator)
  • Hu Zou (Creator)

Dataset

Description

This dataset is supplementary material to the associated paper "DESI Strong Lens Foundry III: Keck Spectroscopy for Strong Lenses Discovered Using Residual Neural Networks" and can be used to generate paper figures 1-6. We refer readers to the README.md within the zip file provided for more information regarding the dataset contents. Abstract: We present spectroscopic data of strong lenses and their source galaxies using the Keck Near-Infrared Echellette Spectrometer (NIRES) and the Dark Energy Spectroscopic Instrument (DESI), providing redshifts necessary for nearly all strong-lensing applications with these systems, especially the extraction of physical parameters from lensing modeling. These strong lenses were found in the DESI Legacy Imaging Surveys using Residual Neural Networks (ResNet) and followed up by our HST program, with all systems displaying unambiguous lensed arcs. With NIRES, we target eight lensed sources at redshifts difficult to measure in the optical range and determine the source redshifts for six, between source redshifts 1.675 and 3.332. DESI observed one of the remaining source redshifts, as well as an additional source redshift within the six systems. The two systems with non-detections by NIRES were observed for a considerably shorter 600s at high airmass. Combining NIRES infrared spectroscopy with optical spectroscopy from our DESI Strong Lensing Secondary Target Program, these results provide the complete lens and source redshifts for six systems, a resource for refining automated strong lens searches in future deep- and wide-field imaging surveys and addressing a range of questions in astrophysics and cosmology.
Date made available22 May 2025
PublisherZenodo

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