SIMBAD references

2026ApJ...998...69H - Astrophys. J., 998, 69 (2026/February-2)

DESI Strong Lens Foundry. I. HST Observations and Modeling with GIGA-Lens.

HUANG X., BALTASAR S., RATIER-WERBIN N., STORFER C., SHEU W., AGARWAL S., TAMARGO-ARIZMENDI M., SCHLEGEL D.J., AGUILAR J., AHLEN S., ALDERING G., BANKA S., BENZVI S., BIANCHI D., BOLTON A., BROOKS D., CIKOTA A., CLAYBAUGH T., DE LA MACORRA A., DEY A., DOEL P., EDELSTEIN J., FILIPP A., FORERO-ROMERO J.E., GAZTANAGA E., GONTCHO A GONTCHO S., GU A., GUTIERREZ G., HONSCHEID K., JULLO E., JUNEAU S., KEHOE R., KIRKBY D., KISNER T., KREMIN A., KWON K.J., LAMBERT A., LANDRIAU M., LANG D., LE GUILLOU L., LIU J., MEISNER A., MIQUEL R., MOUSTAKAS J., MYERS A.D., PERLMUTTER S., PEREZ-RAFOLS I., PRADA F., ROSSI G., RUBIN D., SANCHEZ E., SCHUBNELL M., SHU Y., SILVER E., SPRAYBERRY D., SUZUKI N., TARLE G., WEAVER B.A. and ZOU H.

Abstract (from CDS):

We present the Dark Energy Spectroscopic Instrument (DESI) Strong Lens Foundry. We discovered ∼3500 new strong gravitational lens candidates in the DESI Legacy Imaging Surveys using residual neural networks (ResNet). We observed a subset (51) of our candidates using the Hubble Space Telescope (HST). Except for one ambiguous case, we have confirmed 50 of the 51 candidates to be strong lenses. We also briefly describe spectroscopic follow-up observations by DESI and Keck NIRES programs. From this very rich data set, a number of studies will be carried out, including evaluating the quality of the ResNet search candidates and lens modeling. In this paper, we present our initial effort in these directions. In particular, as a demonstration, we present the lens model for DESI-165.4754-06.0423, with imaging data from HST, and lens and source redshifts from DESI and Keck NIRES, respectively. In this effort, we have applied a fully forward-modeling Bayesian approach (GIGA-Lens), using multiple GPUs, to a strong lens with HST data, and achieved statistical convergence.

Abstract Copyright: © 2026. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Gravitational lensing - Strong gravitational lensing - Galaxy spectroscopy - Infrared spectroscopy - Bayesian statistics - GPU computing

Status at CDS : Tables of objects will be appraised for possible ingestion in SIMBAD.

Simbad objects: 2

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