Pith Number

pith:NVWNLVZ3

pith:2002:NVWNLVZ3MA74FTXZXOSN4UIR65

not attested not anchored not stored refs pending

The Abundances of Nitrogen and Oxygen in Damped Lyman Alpha Systems

Max Pettini (Institute of Astronomy) Sara L. Ellison (European Southern Observatory) Jacqueline Bergeron (Institut d'Astrophysique de Paris) Patrick Petitjean (Institut d'Astrophysique de Paris)

arxiv:astro-ph/0205472 v1 · 2002-05-28 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NVWNLVZ3MA74FTXZXOSN4UIR65}

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.

Cited by

2 papers in Pith

Diverse Histories and Common Origins of Nitrogen-enhanced JWST Galaxies

Cosmic evolution of the helium and oxygen abundances in type 2 Active Galactic Nuclei: Helium-loud AGNs

Receipt and verification

First computed	2026-07-04T16:30:05.875674Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d6cd5d73b603fc2cef9bba4de5111f7615020edd31b03851d6ad7ae5ae40237

Aliases

arxiv: astro-ph/0205472 · arxiv_version: astro-ph/0205472v1 · doi: 10.48550/arxiv.astro-ph/0205472 · pith_short_12: NVWNLVZ3MA74 · pith_short_16: NVWNLVZ3MA74FTXZ · pith_short_8: NVWNLVZ3

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/NVWNLVZ3MA74FTXZXOSN4UIR65 \
  | 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: 6d6cd5d73b603fc2cef9bba4de5111f7615020edd31b03851d6ad7ae5ae40237

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ab6fee5e2bd721b4d30398c2fc127dfedae961248143c594d7e3eaf892e738a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-05-28T08:50:28Z",
    "title_canon_sha256": "25d9bcacf5cf47e69625ca9f60b74ece452f6ca9f75ea6d7dd5fe1d948c5a389"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0205472",
    "kind": "arxiv",
    "version": 1
  }
}