Pith Number

pith:DQ7G3COX

pith:2006:DQ7G3COXJPEGJ3MTY7L4GMSIIT

not attested not anchored not stored refs pending

On the Age and Metallicity Estimation of Spiral Galaxies Using Optical and Near-Infrared Photometry

Guy Worthey (WSU), Hyun-chul Lee (Washington State University), Sandra M. Faber (UCSC), Scott C. Trager (Kapteyn Astronomical Institute)

arxiv:astro-ph/0605425 v3 · 2006-05-17 · 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{DQ7G3COXJPEGJ3MTY7L4GMSIIT}

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

1 paper in Pith

Resolved Ages and Stellar Metallicities in Progenitors of Milky Way Analogs: A Closer Look at their Star Formation Histories since $z=5$

Receipt and verification

First computed	2026-07-04T15:38:44.779009Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c3e6d89d74bc864ed93c7d7c3324844f8ef4b34d65a0651cbc62316e50903ba

Aliases

arxiv: astro-ph/0605425 · arxiv_version: astro-ph/0605425v3 · doi: 10.48550/arxiv.astro-ph/0605425 · pith_short_12: DQ7G3COXJPEG · pith_short_16: DQ7G3COXJPEGJ3MT · pith_short_8: DQ7G3COX

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/DQ7G3COXJPEGJ3MTY7L4GMSIIT \
  | 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: 1c3e6d89d74bc864ed93c7d7c3324844f8ef4b34d65a0651cbc62316e50903ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d78ac69f97034ff2b6384d70dcdaf37102878fbbb01fcc8aab47b841cdf27ecf",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-05-17T19:29:41Z",
    "title_canon_sha256": "3f289458056d4592b484af837f6da3be72292fede5d71ad9ab0b82a4bf83a173"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0605425",
    "kind": "arxiv",
    "version": 3
  }
}