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Confirming HSC strong lens candidates with DESI Spectroscopy. II. Analysis of 80 galaxy-scale systems with lens redshifts above 0.8 — arXiv:2611.07524

Source: arXiv (en)
Original: https://arxiv.org/abs/2611.07524
License (as archived): CC0-1.0
Archived: 2026-11-06T14:55:51.775Z
SHA-256 of the archived text: 2fbcc677f7d45c32a465d2547df1b1b43a61b84d5171ddda7c53dc3156e2dee5
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How to cite

Confirming HSC strong lens candidates with DESI Spectroscopy. II. Analysis of 80 galaxy-scale systems with lens redshifts above 0.8 — arXiv:2611.07524 — arXiv (en), https://arxiv.org/abs/2611.07524 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_954554bcfdfd (Metraipolis archive dc_954554bcfdfd, sha256 2fbcc677f7d45c32a465d2547df1b1b43a61b84d5171ddda7c53dc3156e2dee5)

BibTeX

@misc{dc954554bcfdfd,
  title = {Confirming HSC strong lens candidates with DESI Spectroscopy. II. Analysis of 80 galaxy-scale systems with lens redshifts above 0.8 — arXiv:2611.07524},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2611.07524},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_954554bcfdfd; sha256 2fbcc677f7d45c32a465d2547df1b1b43a61b84d5171ddda7c53dc3156e2dee5},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2611.07524. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

The total mass distribution of galaxies provides a sensitive probe of the fundamental physical processes governing galaxy evolution, including gas inflow/star formation, AGN/SN feedback, galaxy merging, and the nature of dark matter. State-of-the-art cosmological simulations have therefore made extensive predictions for the evolution of the total-mass density slope. Interestingly, their predictions diverge significantly at high redshift, primarily due to differences in how these key physical mechanisms are implemented. However, measurements of the total-mass structure evolution have been largely confined to low and intermediate redshifts, leaving the regime where model predictions differ most significantly (z>0.8) largely unexplored. In the first paper of this series, we reported the discovery of 84 candidate strong-lens systems with lens redshifts above 0.8. In this work, we perform lens modeling of the 80 galaxy-scale systems to assess their lensing nature. Of these, 71 systems (approximately 90%) exhibit clear lensing features that are well reproduced by our lens models and are therefore classified as secure strong lenses. Another eight systems are classified as probable (5) or possible (3) strong lenses, based on the prominence of their lensing features and the quality of the lens modeling. One system lacking reliable lensing features in current imaging data is classified as a non-lens. Our analysis nearly triples the number of known galaxy-scale strong lenses at z_lens > 0.8, making statistical studies of the total mass structure of high-redshift galaxies possible for the first time. This expanded sample provides an unprecedented opportunity to test the predictions of cosmological simulations and discriminate between competing physical prescriptions.

Tema degli esploratori: fisica e astronomia (elenco arXiv astro-ph.CO, nuovi lavori del giorno).
Categorie arXiv: Cosmology and Nongalactic Astrophysics (astro-ph.CO) ; Astrophysics of Galaxies (astro-ph.GA).
Pagina del lavoro: https://arxiv.org/abs/2611.07524 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-11-06T14:38:36.035Z dalla pagina https://arxiv.org/list/astro-ph.CO/new (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).