Pith Number

pith:XL7EPF2O

pith:2008:XL7EPF2O3Z3UXUTN3BUQND5MUH

not attested not anchored not stored refs pending

PAH emission from Herbig AeBe stars

A. Li, B. Sargent, C. H. Chen, D. M. Watson, G.C. Sloan, J. Najita, L. Hartmann, Luke D. Keller, N. Calvet, P. D'Alessio, S. Ayala, S. Shah, W.J. Forrest

arxiv:0809.2389 v1 · 2008-09-14 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XL7EPF2O3Z3UXUTN3BUQND5MUH}

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

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.

Receipt and verification

First computed	2026-05-18T04:29:32.703964Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bafe47974ede774bd26dd869068faca1cebce5722595f17cae207c1be69c8e15

Aliases

arxiv: 0809.2389 · arxiv_version: 0809.2389v1 · doi: 10.48550/arxiv.0809.2389 · pith_short_12: XL7EPF2O3Z3U · pith_short_16: XL7EPF2O3Z3UXUTN · pith_short_8: XL7EPF2O

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/XL7EPF2O3Z3UXUTN3BUQND5MUH \
  | 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: bafe47974ede774bd26dd869068faca1cebce5722595f17cae207c1be69c8e15

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4551f07506f8aab3171eac98a6c3f437b1ca6a1083aeb6b6ce80624859c4ab71",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-14T10:30:18Z",
    "title_canon_sha256": "908d9ca9cfcd5faca8a5882b5942c4224ac9da6ecd3ee6624346ee2df2032223"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.2389",
    "kind": "arxiv",
    "version": 1
  }
}