Pith Number

pith:7E6EUUIM

pith:2026:7E6EUUIMM7DFMMUZ5EBQUHFNVY

not attested not anchored not stored refs resolved

How leaky? A large parameter study of leaky dust traps to quantify the transport of pebbles and ice in protoplanetary discs

Adrien Houge, Anders Johansen, Andrea Banzatti, Sierra Grant

Dust traps in protoplanetary discs are leakier than earlier models assumed, so most outer traps sustain oxygen-rich inner discs with gas-phase C/O below 1.

arxiv:2604.11925 v1 · 2026-04-13 · astro-ph.EP

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\usepackage{pith}
\pithnumber{7E6EUUIMM7DFMMUZ5EBQUHFNVY}

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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

dust traps are leakier than previously thought, on a broader parameter space, such that most outer traps (r > 5 au) will result in a long-lived O-rich inner disc with gas-phase C/O < 1

C2weakest assumption

The 1D DustPy model with its coagulation/fragmentation prescriptions and chosen parameter ranges accurately represents real 3D disc physics and that planetesimal formation efficiency can be treated as an independent input.

C3one line summary

Broad parameter study with detailed dust evolution code finds most outer dust traps leaky, producing long-lived O-rich inner discs with C/O < 1, while planetesimal formation is needed for strong blocking.

References

4 extracted · 4 resolved · 0 Pith anchors

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[2] write newline

[3] , " * write output.state after.block = add.period write newline

[4] write newline

Receipt and verification

First computed	2026-06-03T14:05:24.495045Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f93c4a510c67c6563299e9030a1cadae21b73d76324dd97f3fcc0ce68c01f55b

Aliases

arxiv: 2604.11925 · arxiv_version: 2604.11925v1 · doi: 10.48550/arxiv.2604.11925 · pith_short_12: 7E6EUUIMM7DF · pith_short_16: 7E6EUUIMM7DFMMUZ · pith_short_8: 7E6EUUIM

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/7E6EUUIMM7DFMMUZ5EBQUHFNVY \
  | 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: f93c4a510c67c6563299e9030a1cadae21b73d76324dd97f3fcc0ce68c01f55b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "23c5b19af7055b0ade13638b01ef63d8452f7315ca874760a4ca944cd5cbaf6c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2026-04-13T18:14:25Z",
    "title_canon_sha256": "152a1f5f198a41a927ec1d2e7e87c8e0232c6822a5d320603441784fe7668c93"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.11925",
    "kind": "arxiv",
    "version": 1
  }
}