Pith Number

pith:APR2VIKS

pith:2005:APR2VIKS6TONYZGVPSQLA3X44O

not attested not anchored not stored refs pending

Intra-group diffuse light in compact groups of galaxies. HCG 79, HCG 88 and HCG 95

2), Brazil), Brazil (3) Instituto de Astronomia, Claudia Mendes de Oliveira (3) ((1) Institut f\"ur Astrophysik G\"ottingen (IAG/Uni-Goettingen), Cristiano Da Rocha (1, Geof\'isica e Ci\^encias Atmosf\'ericas, Germany (2) Divis\~ao de Astrof\'isica, Instituto Nacional de Pesquisas Espaciais (DAS/INPE/MCT), Universidade de S\~ao Paulo (IAG/USP)

arxiv:astro-ph/0509908 v2 · 2005-09-30 · 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{APR2VIKS6TONYZGVPSQLA3X44O}

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.

Receipt and verification

First computed	2026-05-18T01:08:58.877947Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

03e3aaa152f4dcdc64d57ca0b06efce395a43451a51e68390133e5db9d48e7d9

Aliases

arxiv: astro-ph/0509908 · arxiv_version: astro-ph/0509908v2 · doi: 10.48550/arxiv.astro-ph/0509908 · pith_short_12: APR2VIKS6TON · pith_short_16: APR2VIKS6TONYZGV · pith_short_8: APR2VIKS

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/APR2VIKS6TONYZGVPSQLA3X44O \
  | 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: 03e3aaa152f4dcdc64d57ca0b06efce395a43451a51e68390133e5db9d48e7d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "05ad04553d27a209ea1b2562ff3a9556ddcf2bc13b652d75281379c726299c7c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-09-30T14:18:06Z",
    "title_canon_sha256": "c55a7164fa8e6532e8917bc3c6ff21433b147fce9ce3a725982df74d53196099"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0509908",
    "kind": "arxiv",
    "version": 2
  }
}