Pith Number

pith:JA75OF6U

pith:2026:JA75OF6U7ZLOWWBB5HHFPB63EM

not attested not anchored not stored refs resolved

DINGO/GAMA /WAVES: HI-halo mass relation

Aaron Robotham, Ajay Dev, Barbara Catinella, Benne W. Holwerda, Elmo Tempel, Ivan Baldry, Jochen Liske, Jonghwan Rhee, Jon Loveday, Kristine Spekkens, Luke Davies, Martin Meyer, Matthew Whiting, Michael J. I. Brown, Paul Nulsen, Richard Dodson, Sabine Bellstedt, Simon P. Driver, Tobias Westmeier, Trystan S. Lambert

Neutral hydrogen content in dark matter halos follows a double power-law relation that turns over near 10^{11.2} solar masses.

arxiv:2604.26389 v1 · 2026-04-29 · astro-ph.GA · astro-ph.CO

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\usepackage{pith}
\pithnumber{JA75OF6U7ZLOWWBB5HHFPB63EM}

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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.

Claims

C1strongest claim

We find that the HIHM relation exhibits a double power-law form, with a turnover near M_h ∼ 10^{11.2} M_⊙. Central galaxies dominate the halo HI budget below M_h ∼ 6 × 10^{12} M_⊙, while satellites dominate at higher halo masses. Including photometric members increases the measured HI content in halos above 10^{13} M_⊙ by a factor of 1.5-3.

C2weakest assumption

That photometric members from WAVES are correctly assigned to GAMA groups and that their stacked HI signal reliably represents true gas content without major contamination, incompleteness, or selection bias.

C3one line summary

The HI-halo mass relation follows a double power-law with turnover near 10^11.2 solar masses; centrals dominate the HI budget below ~6e12 solar masses while satellites dominate above, and photometric members boost high-mass halo HI by 1.5-3x.

References

5 extracted · 5 resolved · 0 Pith anchors

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Receipt and verification

First computed	2026-05-27T14:06:45.207722Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

483fd717d4fe56eb5821e9ce5787db233f31c11777fa056832cd485dec86b2b5

Aliases

arxiv: 2604.26389 · arxiv_version: 2604.26389v1 · doi: 10.48550/arxiv.2604.26389 · pith_short_12: JA75OF6U7ZLO · pith_short_16: JA75OF6U7ZLOWWBB · pith_short_8: JA75OF6U

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/JA75OF6U7ZLOWWBB5HHFPB63EM \
  | 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: 483fd717d4fe56eb5821e9ce5787db233f31c11777fa056832cd485dec86b2b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9a852adfdcf1a936f2aed05da1035dadad40973dc585995ccaaeecf98bde6fd",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-04-29T07:58:31Z",
    "title_canon_sha256": "8f5f260befabad421d98537cb43719eae6b74bda026cfbf88d225d90f292366c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.26389",
    "kind": "arxiv",
    "version": 1
  }
}