A Unified H i Rotation Curve Database for 129 Local Volume Dwarf and Irregular Galaxies
Abstract
We present a unified H i rotation curve database for 129 dwarf and irregular galaxies drawn from four Local Volume surveys: the Local Volume H i Survey (LVHIS; 33 galaxies), VLA-ANGST (29), LITTLE THINGS (26), and WALLABY DR2 (41). The database provides standardised kinematic parameters, distance estimates, morphological classifications, and rotation curve data in machine-readable JSON, JSONL, and CSV formats with a documented 27-field schema, supporting retrieval-augmented generation (RAG) applications and cross-survey kinematic analysis. Quality tiers distinguish 26 galaxies with full multi-point tilted-ring rotation curves from 103 with single-ring or profile-width estimates. Three worked examples demonstrate corpus queries, including application of the {\omega} correction to DDO 154 (LITTLE THINGS). This work is presented as a data resource; no new dynamical model is proposed. The database and all computation scripts are available at Zenodo (https://doi.org/10.5281/zenodo.20320362).
Keywords
Cite
@article{arxiv.2605.22163,
title = {A Unified H i Rotation Curve Database for 129 Local Volume Dwarf and Irregular Galaxies},
author = {David C. Flynn},
journal= {arXiv preprint arXiv:2605.22163},
year = {2026}
}
Comments
6 pages, 1 figure, 1 table. Data and code at Zenodo: https://doi.org/10.5281/zenodo.20320362