Pith Number

pith:3XZYKWUV

pith:2026:3XZYKWUVUZSEW6JUNEQMWKAMOF

not attested not anchored not stored refs resolved

The multi-age stellar populations of Terzan 5 as revealed by JWST

B. Lanzoni, C. Crociati, C. Fanelli, C. Pallanca, D. Massari, E. Dalessandro, E. Valenti, E. Vesperini, F. R. Ferraro, G. Zullo, L. Origlia, M. Cadelano, R. M. Rich

Terzan 5 contains stellar populations born eight billion years apart, marking it as a remnant of the Milky Way's early assembly.

arxiv:2604.00098 v2 · 2026-03-31 · astro-ph.GA · astro-ph.SR

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Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3XZYKWUVUZSEW6JUNEQMWKAMOF}

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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 clearly identify two main components and determine their respective ages: the old, sub-solar component has an age of 12.5 ± 0.5 Gyr, while the super-solar component is significantly younger with an age of 4.7 ± 0.5 Gyr.

C2weakest assumption

The analysis assumes that both the metal-poor and metal-rich populations share the same distance modulus ((m-M)0 = 12.91) and can be accurately modeled using the same differential reddening law despite their large color differences.

C3one line summary

JWST observations of Terzan 5 reveal multiple stellar populations with ages of 12.5 and 4.7 Gyr, plus hints of a 3.8 Gyr component, suggesting a multi-epoch formation history.

References

73 extracted · 2 resolved · 1 Pith anchors

[1] D., Vanzella, E., et al 2024

[2] 2022, One-Pass HST Photometry with hst1pass, Instrument Science Report WFC3 2022-5, 55 pages 2022

[3] Anderson, J. & King, I. R. 2006, PSFs, Photometry, and Astronomy for the ACS/WFC, Instrument Science Report ACS 2006-01, 34 pages 2006

[4] Anderson, J., King, I. R., Richer, H. B., et al. 2008, AJ, 135, 2114 2008

[5] Bastian, N. & Pfeffer, J. 2022, MNRAS, 509, 614 2022

Receipt and verification

First computed	2026-05-20T14:03:26.646055Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ddf3855a95a6644b79346920cb280c715459b01be7a90a73237f97590400f21f

Aliases

arxiv: 2604.00098 · arxiv_version: 2604.00098v2 · doi: 10.48550/arxiv.2604.00098 · pith_short_12: 3XZYKWUVUZSE · pith_short_16: 3XZYKWUVUZSEW6JU · pith_short_8: 3XZYKWUV

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/3XZYKWUVUZSEW6JUNEQMWKAMOF \
  | 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: ddf3855a95a6644b79346920cb280c715459b01be7a90a73237f97590400f21f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b111079070ffc31b1a271565bb06e5095a62c7d08119d1e310e92a69a6d06fc",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-03-31T18:19:14Z",
    "title_canon_sha256": "5961d0ffc23f2c10d153039110437fef80f25210015048e2498279bfc49aab01"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.00098",
    "kind": "arxiv",
    "version": 2
  }
}