Pith Number

pith:YPU6BG63

pith:2025:YPU6BG637UBRJY5PGNAAVGKE2M

not attested not anchored not stored refs pending

Hot accretion onto spiral galaxies: the origin of extended and warped HI discs

Barbara Catinella, Chris Power, Claude-Andr\'e Faucher-Gigu\`ere, Drummond Fielding, Imran Sultan, Jonathan Stern, Joss Bland-Hawthorn, Michael Boylan-Kolchin, Sriram Sankar

Hot gas from tilted galactic atmospheres condenses into extended, warped HI discs that fuel star formation in spirals.

arxiv:2511.03793 v3 · 2025-11-05 · astro-ph.GA

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\usepackage{pith}
\pithnumber{YPU6BG637UBRJY5PGNAAVGKE2M}

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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

Continuous smooth accretion from hot atmospheres can thus both provide the necessary fuel for star formation and explain the observed ubiquity of extended and warped HI discs around local spirals.

C2weakest assumption

The simulations assume that the hot atmosphere maintains a persistent tilt relative to the stellar disc and that condensation proceeds smoothly without major disruption from feedback or external events, as stated in the description of the idealized setup.

C3one line summary

Idealized hydrodynamic simulations demonstrate that continuous condensation from tilted hot galaxy atmospheres produces extended and warped cool gas discs, explaining observed HI features and providing star formation fuel.

Cited by

2 papers in Pith

A Universal Dance of Galactic Disks: Ubiquitous Precession and Its Implications

Peering down the barrel with DESI DR2: 10 000+ inflows at $z$ < 0.6 reveal how galaxies accrete cold gas

Receipt and verification

First computed	2026-06-04T01:08:35.727552Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3e9e09bdbfd0314e3af33400a9944d330196892d9aadc8b2c93aad1d55963cb

Aliases

arxiv: 2511.03793 · arxiv_version: 2511.03793v3 · doi: 10.48550/arxiv.2511.03793 · pith_short_12: YPU6BG637UBR · pith_short_16: YPU6BG637UBRJY5P · pith_short_8: YPU6BG63

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/YPU6BG637UBRJY5PGNAAVGKE2M \
  | 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: c3e9e09bdbfd0314e3af33400a9944d330196892d9aadc8b2c93aad1d55963cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f5d6436dbe557bef5546d5241837c5c2af28ef7d0bd84be47f4aadac027eb3e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2025-11-05T19:00:18Z",
    "title_canon_sha256": "dcc3f1460838fb50e860af965b66d0da6a000cf96ccf08fe92ecf7bc1d89017e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2511.03793",
    "kind": "arxiv",
    "version": 3
  }
}