@misc{wang2025serendipitous,
  title={Serendipitous discovery of a young cluster of galaxies at $z \sim 0.5$ projected next to the nearby tadpole galaxy KUG 1138 + 327},
  author={Q. Daniel Wang and Juergen Ott},
  year={2025},
  eprint={2508.11819},
  archivePrefix={arXiv},
  primaryClass={astro-ph.HE},
  url={https://arxiv.org/abs/2508.11819}
}