Pith Number

pith:SHO6ABAQ

pith:1999:SHO6ABAQVUQIPSG6P4XA5JBZG6

not attested not anchored not stored refs pending

Binarity of Central Stars of Planetary Nebulae

Howard E. Bond

arxiv:astro-ph/9909516 v1 · 1999-09-30 · 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{SHO6ABAQVUQIPSG6P4XA5JBZG6}

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

Studying hot evolved stars with ultraviolet spectroscopy

Receipt and verification

First computed	2026-07-04T14:17:10.380023Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91dde00410ad2087c8de7f2e0ea4393784a6963534d6265381cdec23a1cea617

Aliases

arxiv: astro-ph/9909516 · arxiv_version: astro-ph/9909516v1 · doi: 10.48550/arxiv.astro-ph/9909516 · pith_short_12: SHO6ABAQVUQI · pith_short_16: SHO6ABAQVUQIPSG6 · pith_short_8: SHO6ABAQ

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/SHO6ABAQVUQIPSG6P4XA5JBZG6 \
  | 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: 91dde00410ad2087c8de7f2e0ea4393784a6963534d6265381cdec23a1cea617

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e9feb3859ed18fd6f8e5a6998a057ddddd758d40e2dd102594f425c062b3519",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-09-30T21:27:03Z",
    "title_canon_sha256": "7ee762cb6eb76162770e1030bed25ca1d963172620d60ac8f00b0a2c0c0fde9e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9909516",
    "kind": "arxiv",
    "version": 1
  }
}