20,000 Rotation Periods in Nearby Open Clusters and Moving Groups from ZTF and ASAS-SN
Abstract
Open clusters provide uniquely powerful laboratories for studying stellar evolution because their members share a common age and chemical composition. Stellar rotation of low-mass GKM dwarfs in open clusters provides direct empirical constraints on magnetic braking, with implications for stellar interiors, magnetic activity, and star--planet interactions. However, existing cluster rotation samples are dominated by space-based observations, whose limited spatial coverage and short observing baselines can make it difficult to construct an unbiased sample. Long-baseline ground-based time-domain surveys therefore provide an important complement to space-based photometry. I present a catalog of ∼20,000 periodic photometric signals, including stellar rotations, eclipsing-binaries, and classical pulsators, measured from the Zwicky Transient Facility (ZTF) and the All-Sky Automated Survey for Supernovae (ASAS-SN) for members of nearby open clusters and moving groups within 1.5 kpc. This catalog provides a new empirical foundation for studying the mass, chemical composition, and age dependence of stellar angular-momentum evolution and for testing models of magnetic braking across a broad range of stellar masses and evolutionary states.
Related
- The TESS All-Sky Rotation Survey: Periods for 1,046,317 Stars within 500 pc
- The Montreal Open Clusters and Associations (MOCA) Database: A Census of Nearby Associations, Open Clusters, and Young Substellar Objects within 500 pc of the Sun
- Eclipses of Nearby Millimeter-bright Galactic Nuclei by Stars in Nuclear Star Clusters
- Combination of multi-observatory photometry to determine asteroid rotation periods
- The NEID Earth Twin Survey. VI. Discovery of a Low-Mass Planet Orbiting HD 126053 and RV Signals Near the Rotation Periods of HD 168009 and HD 10780
BibTeX
@misc{lu202620000,
title = {{20,000 Rotation Periods in Nearby Open Clusters and Moving Groups from ZTF and ASAS-SN}},
author = {Yuxi Lu},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.27113},
eprint = {2610.27113},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.27113},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - 20,000 Rotation Periods in Nearby Open Clusters and Moving Groups from ZTF and ASAS-SN
AU - Yuxi Lu
PY - 2026
DA - 2026/10/19
PB - arXiv
DO - 10.48550/arxiv.2610.27113
UR - https://arxiv.org/abs/2610.27113
AB - Open clusters provide uniquely powerful laboratories for studying stellar evolution because their members share a common age and chemical composition. Stellar rotation of low-mass GKM dwarfs in open clusters provides direct empirical constraints on magnetic braking, with implications for stellar interiors, magnetic activity, and star--planet interactions. However, existing cluster rotation samples are dominated by space-based observations, whose limited spatial coverage and short observing baselines can make it difficult to construct an unbiased sample. Long-baseline ground-based time-domain surveys therefore provide an important complement to space-based photometry. I present a catalog of ∼20,000 periodic photometric signals, including stellar rotations, eclipsing-binaries, and classical pulsators, measured from the Zwicky Transient Facility (ZTF) and the All-Sky Automated Survey for Supernovae (ASAS-SN) for members of nearby open clusters and moving groups within 1.5 kpc. This catalog provides a new empirical foundation for studying the mass, chemical composition, and age dependence of stellar angular-momentum evolution and for testing models of magnetic braking across a broad range of stellar masses and evolutionary states.
ER -