Pith Number

pith:BGDH4LNT

pith:2018:BGDH4LNTC7LZ5FPOLCBE5V6HUI

not attested not anchored not stored refs pending

A quantitative NLTE analysis of visual and ultraviolet spectra of four helium-rich subdwarf O stars

Andreas Irrgang, Marcello Miller Bertolami, Marilyn Latour, Markus Schindewolf, Peter Nemeth, Tiara Battich, Ulrich Heber

arxiv:1810.08082 v1 · 2018-10-18 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BGDH4LNTC7LZ5FPOLCBE5V6HUI}

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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

TESS Observations of Stochastic Low-frequency Variability in Extreme Helium Stars

Receipt and verification

First computed	2026-05-17T23:59:13.972936Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09867e2db317d79e95ee58824ed7c7a221a9a614a84087cf571bef40de9d37b8

Aliases

arxiv: 1810.08082 · arxiv_version: 1810.08082v1 · doi: 10.48550/arxiv.1810.08082 · pith_short_12: BGDH4LNTC7LZ · pith_short_16: BGDH4LNTC7LZ5FPO · pith_short_8: BGDH4LNT

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/BGDH4LNTC7LZ5FPOLCBE5V6HUI \
  | 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: 09867e2db317d79e95ee58824ed7c7a221a9a614a84087cf571bef40de9d37b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8d41bf4881a2639fa325068e6bd165113c0c526d0b13e8fd1a5ac8868c0807f3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-10-18T14:34:42Z",
    "title_canon_sha256": "4704de268309cffd9b3e620f3383e5135a1b6773f401b167f19823d7be4233e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.08082",
    "kind": "arxiv",
    "version": 1
  }
}