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arXiv · 2605.25339

A Unified [CII] Morpho-Kinematic Corpus for 31 Star-Forming Galaxies at z = 4.26-5.68: The High-z Kinematic Corpus Z1

David C. Flynn
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Abstract

CORRECTION (August 2026): The $\omega$ values originally reported were computed with a parenthesization error not matching Eq. 6 of Flynn & Cannaliato (2025). Under the corrected formula, all 8 Tier-1 Z1 rotators yield positive $\omega$ values (median $+12.621$ rad Gyr$^{-1}$; $+12.341$ km s$^{-1}$ kpc$^{-1}$). The previously reported sign reversal does not reproduce. See the GitHub repository for full details. Corrected corpus at Zenodo DOI: 10.5281/zenodo.21834678. We present the High-z Kinematic Corpus Z1, a structured machine-readable dataset of ALMA [CII] 158 $\mu$m morpho-kinematic data for 31 star-forming galaxies at $z = 4.26-5.68$ drawn from the ALPINE survey (Jones et al. 2021; Le Fevre et al. 2020). The corpus is the fifth entry in the EPS Research RAG Astrophysics Corpus Series, extending coverage to the epoch approaching cosmic reionization. Eight confirmed rotators carry quality tier 1 per-ring rotation curves from 3DBarolo tilted-ring fits (Di Teodoro & Fraternali 2015), with 2-3 rings per galaxy, $V_{\rm rot}$ and $\sigma$ per ring, and dynamical mass estimates; the remaining 23 carry morpho-kinematic classification only (tier 2). All entries include stellar mass (Faisst et al. 2020), star formation rate, Wisnioski disk criteria, and geometric parameters. Distributed as a structured JSON, flat CSV, RAG-ready JSONL, and per-galaxy ZIP. Jupyter notebooks demonstrate single-galaxy [CII] analysis, population statistics, and cross-corpus application of the $\omega$ kinematic correction. Corrected result: Applying canonical Eq. 6 to all 8 tier-1 rotators yields positive $\omega$ values (median $+12.621$ rad Gyr$^{-1}$)[cite: 1]. The previous negative values (median $-13.05$ rad Gyr$^{-1}$) were a formula artifact and are withdrawn. Publicly available under CC BY 4.0[cite: 1].

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David C. Flynn. 2026-05-25. A Unified [CII] Morpho-Kinematic Corpus for 31 Star-Forming Galaxies at z = 4.26-5.68: The High-z Kinematic Corpus Z1. https://arxiv.org/abs/2605.25339

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