Pith Number

pith:PMVHE4OW

pith:2026:PMVHE4OWO7EJTUH6MIMPOQOBZP

not attested not anchored not stored refs pending

Chemo-dynamical reconstruction of Milky Way globular cluster progenitors: Age-metallicity relations and the universality of multiple stellar populations

Carmela Lardo, David Valcin, Raul Jimenez

Helium enrichment in Milky Way globular clusters depends only on cluster mass and shows no dependence on progenitor origin

arxiv:2603.11814 v2 · 2026-03-12 · astro-ph.GA · astro-ph.SR

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\usepackage{pith}
\pithnumber{PMVHE4OWO7EJTUH6MIMPOQOBZP}

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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

Neither δY nor Ȳ depends on progenitor origin; the mass–MP scaling is indistinguishable across in-situ and accreted systems. Sequoia clusters alone show higher f_P1 at fixed mass and metallicity.

C2weakest assumption

The chemo-dynamical clustering correctly assigns clusters to their true progenitor galaxies and the hierarchical Bayesian CMD modelling accurately recovers ages, helium spreads, mean helium, and first-population fractions without large systematic biases from the data or model choices.

C3one line summary

Globular cluster progenitors show similar helium enrichment patterns regulated by cluster mass regardless of origin, with chemical enrichment timescales under 2 Gyr and a residual higher first-population fraction only in Sequoia clusters.

Formal links

2 machine-checked theorem links

Cited by

1 paper in Pith

The Absolute Age of the Open Cluster NGC 6791 and Its Implications for Galactic Archaeology and Asteroseismic Calibration

Receipt and verification

First computed	2026-05-27T14:06:41.566710Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b2a7271d677c899d0fe6218f741c1cbf14211019cf375ef243c7463d1199384

Aliases

arxiv: 2603.11814 · arxiv_version: 2603.11814v2 · doi: 10.48550/arxiv.2603.11814 · pith_short_12: PMVHE4OWO7EJ · pith_short_16: PMVHE4OWO7EJTUH6 · pith_short_8: PMVHE4OW

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/PMVHE4OWO7EJTUH6MIMPOQOBZP \
  | 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: 7b2a7271d677c899d0fe6218f741c1cbf14211019cf375ef243c7463d1199384

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1adeead6e4da09ee27bbe6186abfad7ba74bbefd2ed6ad6f9ab793fd1c66deb",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-03-12T11:21:07Z",
    "title_canon_sha256": "eae01ee27b6ebe1a15709f0e48425e95b1376a0f12a73471cf8f56c3b0ad479f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.11814",
    "kind": "arxiv",
    "version": 2
  }
}