Pith Number

pith:PGI5MTUG

pith:2026:PGI5MTUGF56C3JXYYNPRXNU245

not attested not anchored not stored refs resolved

The Simulated Oxygen Shortage (SOS): Mapping the Missing OVI in Simulated Dwarf Galaxies to Subgrid Physics

Akaxia Cruz, Alyson M. Brooks, Ben Keller, Cameron Hummels, Charlotte Christensen, Daniel R. Piacitelli, Hetvi Khatri, James Wadsley, Nishant Mishra, N. Nicole Sanchez, Sijing Shen, Thomas R. Quinn

Simulations underproduce oxygen in low-mass dwarf galaxies, leading to missing OVI in their CGM.

arxiv:2605.15275 v1 · 2026-05-14 · astro-ph.GA

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\usepackage{pith}
\pithnumber{PGI5MTUGF56C3JXYYNPRXNU245}

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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 evidence for an underproduction of oxygen for low-mass simulated galaxies.

C2weakest assumption

The total oxygen mass available is accurately given by integrating the simulation's star formation history with standard yield tables, and that observed OVI masses provide a fair benchmark without major selection or ionization corrections.

C3one line summary

The paper identifies underproduction of oxygen in low-mass simulated dwarf galaxies as the likely cause of missing OVI in the CGM, based on comparisons across two simulation suites.

References

137 extracted · 137 resolved · 57 Pith anchors

[1] GIZMO: A New Class of Accurate, Mesh-Free Hydrodynamic Simulation Methods · doi:10.1093/mnras/stv195

[2] M., & Rasio, F 2005 · doi:10.1111/j.1365-2966.2005.09655.x

[3] 2012, ApJ, 746, 125, doi: 10.1088/0004-637X/746/2/125 · doi:10.1088/0004-637x/746/2/125

[4] A New Calculation of the Ionizing Background Spectrum and the Effects of HeII Reionization · doi:10.1088/0004-637x/703/2/1416

[5] 2001, MNRAS, 322, 231, doi: 10.1046/j.1365-8711.2001.04022.x 2001 · doi:10.1046/j.1365-8711.2001.04022.x

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-20T00:00:50.258079Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7991d64e862f7c2da6f8c35f1bb69ae77f118eb0f14b277b0759289e12126155

Aliases

arxiv: 2605.15275 · arxiv_version: 2605.15275v1 · doi: 10.48550/arxiv.2605.15275 · pith_short_12: PGI5MTUGF56C · pith_short_16: PGI5MTUGF56C3JXY · pith_short_8: PGI5MTUG

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/PGI5MTUGF56C3JXYYNPRXNU245 \
  | 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: 7991d64e862f7c2da6f8c35f1bb69ae77f118eb0f14b277b0759289e12126155

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a15b3f4d86166ddd8c1fc4b87cfe0aa54ed998c632df28715cf5eb3b866815d",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-05-14T18:00:03Z",
    "title_canon_sha256": "938f3c398ef6f36cc06555643ed9346926e7eb533d927bd9fd1600cb561f52eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.15275",
    "kind": "arxiv",
    "version": 1
  }
}