Pith Number

pith:Z437H7QD

pith:2026:Z437H7QDRMAKSVXQJS57JPHKSE

not attested not anchored not stored refs resolved

Revisiting the ultraviolet spectroscopy of the eta Tel edge-on debris disk

Aki Roberge, Alexis Brandeker, Allison Youngblood, Alycia Weinberger, Barry Welsh, Meredith A. MacGregor, Sebastian Perez

A -1 km/s absorption feature toward eta Tel is likely circumstellar gas with low C/O ratio.

arxiv:2605.12627 v1 · 2026-05-12 · astro-ph.EP · astro-ph.SR

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\pithnumber{Z437H7QDRMAKSVXQJS57JPHKSE}

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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

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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.

Claims

C1strongest claim

the fourth component near -1 km s^{-1}, which was only detected in O I, is inconsistent with an interstellar origin and could be circumstellar. We place a 3-σ upper limit on the C/O ratio of the -1 km s^{-1} gas (log C/O < -2.1)

C2weakest assumption

That the -1 km/s component is not interstellar, based on velocity matching to optical spectroscopy of eta Tel and projected nearby stars.

C3one line summary

The -1 km/s absorption toward eta Tel is circumstellar with log C/O < -2.1, matching solar system comet abundances but not carbon-rich disks around hotter stars.

References

48 extracted · 48 resolved · 0 Pith anchors

[1] Earth and Planetary Science Letters , year = 2001, month = feb, volume = 2001 · doi:10.1016/s0012-821x(00)00359-9

[2] E., & Paresce , F 1993

[3] Beust , H., Vidal-Madjar , A., Ferlet , R., & Lagrange-Henri , A. M. 1990, title The Beta Pictoris circumstellar disk. X - Numerical simulations of infalling evaporating bodies , , 236, 202. http://ad 1990

[4] 2016, title Herschel detects oxygen in the Pictoris debris disk , , 591, A27, 10.1051/0004-6361/201628395 2016 · doi:10.1051/0004-6361/201628395

[5] and Worthen, Kadin and Li, Alexis and Sefilian, Antranik A 2024 · doi:10.3847/1538-4357/ad74f4

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-18T03:10:00.264263Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf37f3fe038b00a956f04cbbf4bcea911262d6ca3a4353c9d62f2cce2afff5c7

Aliases

arxiv: 2605.12627 · arxiv_version: 2605.12627v1 · doi: 10.48550/arxiv.2605.12627 · pith_short_12: Z437H7QDRMAK · pith_short_16: Z437H7QDRMAKSVXQ · pith_short_8: Z437H7QD

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/Z437H7QDRMAKSVXQJS57JPHKSE \
  | 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: cf37f3fe038b00a956f04cbbf4bcea911262d6ca3a4353c9d62f2cce2afff5c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21355034342159aa1df8607c65aec6a9cac2d01334f8e11bdccd35a21ffda939",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2026-05-12T18:11:09Z",
    "title_canon_sha256": "5e5862627a7f68b77cdea62ec645e3f3667850c33d499978694073d7f1da9f22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.12627",
    "kind": "arxiv",
    "version": 1
  }
}