@article{heng2025gradient,
  title = {The Gradient of Mean Molecular Weight Across the Radius Valley},
  author = {Kevin Heng and James E. Owen and Meng Tian},
  year = {2025},
  eprint = {2504.02499},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2504.02499},
}