A sub-100 pc view at z~5 of a multiply imaged massive quiescent galaxy

@misc{pan2026sub100,
  title = {{A sub-100 pc view at z~5 of a multiply imaged massive quiescent galaxy}},
  author = {Richard Pan and Danilo Marchesini and Joseph F. V. Allingham and Seiji Fujimoto and Adi Zitrin and Dan Coe and Vasily Kokorev and Lukas J. Furtak and Jacqueline Antwi-Danso and Yoshihisa Asada and Franz E. Bauer and Maruša Bradač and Larry D. Bradley and Chloe M. Cheng and Pratika Dayal and Andreas L. Faisst and Brenda L. Frye and Norman A. Grogin and Tiger Yu-Yang Hsiao and Gourav Khullar and Anton M. Koekemoer and Conor Larison and Ray A. Lucas and Vladan Markov and Nicholas S. Martis and Minami Nakane and Gaël Noirot and Johan Richard and Massimo Ricotti and Luke Robbins and Fengwu Sun and Francesco Valentino and Eros Vanzella and Chris Willott and Rogier A. Windhorst and Hiroto Yanagisawa and Anita Zanella},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2609.28474},
  eprint = {2609.28474},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.28474},
  note = {CC BY 4.0},
}

TY  - UNPB
TI  - A sub-100 pc view at z~5 of a multiply imaged massive quiescent galaxy
AU  - Richard Pan
AU  - Danilo Marchesini
AU  - Joseph F. V. Allingham
AU  - Seiji Fujimoto
AU  - Adi Zitrin
AU  - Dan Coe
AU  - Vasily Kokorev
AU  - Lukas J. Furtak
AU  - Jacqueline Antwi-Danso
AU  - Yoshihisa Asada
AU  - Franz E. Bauer
AU  - Maruša Bradač
AU  - Larry D. Bradley
AU  - Chloe M. Cheng
AU  - Pratika Dayal
AU  - Andreas L. Faisst
AU  - Brenda L. Frye
AU  - Norman A. Grogin
AU  - Tiger Yu-Yang Hsiao
AU  - Gourav Khullar
AU  - Anton M. Koekemoer
AU  - Conor Larison
AU  - Ray A. Lucas
AU  - Vladan Markov
AU  - Nicholas S. Martis
AU  - Minami Nakane
AU  - Gaël Noirot
AU  - Johan Richard
AU  - Massimo Ricotti
AU  - Luke Robbins
AU  - Fengwu Sun
AU  - Francesco Valentino
AU  - Eros Vanzella
AU  - Chris Willott
AU  - Rogier A. Windhorst
AU  - Hiroto Yanagisawa
AU  - Anita Zanella
PY  - 2026
DA  - 2026/10/28
PB  - arXiv
DO  - 10.48550/arxiv.2609.28474
UR  - https://arxiv.org/abs/2609.28474
AB  - James Webb Space Telescope surveys reveal many rapidly assembled galaxies in the first billion years. Simulations struggle to reproduce their rapid star formation and abrupt cessation, known as quenching. Testing these models is difficult because high-redshift galaxies are compact and appear unresolved. We present VENUS-CLJ0152-QG1, a massive post-starburst galaxy at redshift 5.18. A foreground cluster lenses it into three images, yielding a physical resolution of about 70 parsecs, enough to probe quenching processes on sub-kiloparsec scales. We find a half-light radius twice as large as expected, a central stellar mass density three times lower than field analogs, and off-center ionized gas emission. These features suggest it quenched without compaction or an obvious active galactic nucleus, a departure from unlensed high-redshift galaxies that lensing makes visible.
ER  -