Pith Number

pith:JOAEF6XQ

pith:2026:JOAEF6XQI4XDQ4MEIVLR3KGSGI

not attested not anchored not stored refs pending

MSA-3D: Connecting the Chemical and Kinematic Structures of Galaxies at $z \sim 1$

Alaina Henry, Danail Obreschkow, Ivana Bari\v{s}i\'c, Juan M. Espejo Salcedo, Karl Glazebrook, Kevin Bundy, Matthew A. Malkan, Mengting Ju, Namrata Roy, Qianqiao Zhou, Takafumi Tsukui, Themiya Nanayakkara, Tucker Jones, Xin Wang, Xunda Sun

Dynamically hotter disks show flatter metallicity gradients in galaxies at z~1.

arxiv:2601.14976 v2 · 2026-01-21 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JOAEF6XQI4XDQ4MEIVLR3KGSGI}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

Dynamically hotter disks exhibit systematically flatter metallicity gradients, with a moderate anti-correlation between metallicity gradient and v/σ (Pearson r=-0.43, p=0.05) and a significantly stronger anti-correlation with Re/σ (r=-0.59, p=0.005), indicating that cumulative radial mixing more directly regulates chemical stratification. The metallicity gradients in our sample are uniformly shallow.

C2weakest assumption

That Re/σ serves as a reliable proxy for radial mixing timescale and that the reported anti-correlations reflect causal regulation by mixing rather than selection effects, stellar mass covariances, or measurement systematics in the sample of 21 galaxies.

C3one line summary

Dynamically hotter galaxies at z~1 exhibit flatter metallicity gradients, suggesting turbulent mixing regulates chemical stratification in typical star-forming disks.

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-26T01:03:22.913298Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b8042faf0472e38718445571da8d2322ff38e95c27b78e7f038b5eba0eadb8d

Aliases

arxiv: 2601.14976 · arxiv_version: 2601.14976v2 · doi: 10.48550/arxiv.2601.14976 · pith_short_12: JOAEF6XQI4XD · pith_short_16: JOAEF6XQI4XDQ4ME · pith_short_8: JOAEF6XQ

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/JOAEF6XQI4XDQ4MEIVLR3KGSGI \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 4b8042faf0472e38718445571da8d2322ff38e95c27b78e7f038b5eba0eadb8d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "145a1fbcb83e5b7452d3ce7f5b3c435dcfe850279af962f62d86b7f50cab233b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-01-21T13:26:00Z",
    "title_canon_sha256": "1c1a4537bcdbc883230583c4ae447b41dea60bf335e71bfadd7a2546719e3dbe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2601.14976",
    "kind": "arxiv",
    "version": 2
  }
}