Pith Number

pith:N47QKZHD

pith:2025:N47QKZHDMU4ENF6BGCTIAKWRYN

not attested not anchored not stored refs pending

Clues to inside-out quenching in quiescent galaxies at $1.2\lesssim z\lesssim2.2$: Age, Fe-, and Mg-abundance gradients from JWST-SUSPENSE

Adam Muzzin, Aliza G. Beverage, Andrew B. Newman, Anna de Graaff, Arjen van der Wel, Brian Lorenz, Chloe M. Cheng, Daniel R. Weisz, Danilo Marchesini, Guillermo Barro, Ignacio Mart\'in-Navarro, Jesse van de Sande, Katherine A. Suess, Mariska Kriek, Martje Slob, Natascha M. F\"orster Schreiber, Pieter G. van Dokkum, Rachel Bezanson, Sedona H. Price

Distant quiescent galaxies have older cores with flat iron abundances, suggesting inside-out quenching.

arxiv:2509.12316 v4 · 2025-09-15 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N47QKZHDMU4ENF6BGCTIAKWRYN}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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

These galaxies have negative age gradients and flat [Fe/H] gradients, with tentative positive [Mg/H] and [Mg/Fe] gradients, suggesting galaxy cores are older and perhaps Mg-deficient compared to outskirts, consistent with inside-out quenching.

C2weakest assumption

The full-spectrum fitting models correctly break the age-metallicity degeneracy and recover true radial gradients without significant biases from template libraries, dust, or IMF assumptions (implicit in the methods section describing the fitting procedure).

C3one line summary

Negative age gradients and flat [Fe/H] gradients in high-redshift quiescent galaxies from NIRSpec-MSA spectroscopy suggest cores formed and quenched earlier than outskirts.

Receipt and verification

First computed	2026-05-28T01:05:10.737805Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f3f0564e365384697c130a6802ad1c372470f7af8046735fc92fd535f6ba240

Aliases

arxiv: 2509.12316 · arxiv_version: 2509.12316v4 · doi: 10.48550/arxiv.2509.12316 · pith_short_12: N47QKZHDMU4E · pith_short_16: N47QKZHDMU4ENF6B · pith_short_8: N47QKZHD

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/N47QKZHDMU4ENF6BGCTIAKWRYN \
  | 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: 6f3f0564e365384697c130a6802ad1c372470f7af8046735fc92fd535f6ba240

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2ac321d0b3f131702c7c74b3101716fcf62a2a9cdaf48feaa28a1c0d3661416",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2025-09-15T18:00:02Z",
    "title_canon_sha256": "1c0cc400c73d04036db8820b24c3aada080cdb5cfcbd9ab2b86a03df46d0b1e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.12316",
    "kind": "arxiv",
    "version": 4
  }
}