Pith Number

pith:4WHXK3S5

pith:2025:4WHXK3S5Y7XKVPKOPGOESDUFWB

not attested not anchored not stored refs pending

Ram-pressure stripping caught in action in a young cluster at $z = 2.51$

Anita Zanella, Can Xu, Daizhong Liu, David Elbaz, Emanuele Daddi, Francesco Valentino, Hanwen Sun, Ke Xu, Kotaro Kohno, Longyue Chen, Luwenjia Zhou, Mengyuan Xiao, Qiaoyang Hao, Raphael Gobat, Renyue Cen, Tadayuki Kodama, Tao Wang, Tiancheng Yang, Zhi-Yu Zhang

ALMA data show five galaxies in a z=2.51 forming cluster with elongated gas tails extending beyond their stars, indicating ram-pressure stripping.

arxiv:2503.21724 v4 · 2025-03-27 · astro-ph.GA

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Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4WHXK3S5Y7XKVPKOPGOESDUFWB}

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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

These represent the most distant confirmed cases of RPS, highlighting the critical role of environmental effects in gas removal at high redshifts, an often overlooked quenching pathway.

C2weakest assumption

The elongated gas tails are produced by ram-pressure stripping rather than by outflows, tidal forces, or projection effects, based on the galaxies appearing isolated and lacking merger signatures (abstract).

C3one line summary

ALMA observations reveal ram-pressure stripping in five galaxies at z=2.51, the most distant confirmed instances, indicating environmental gas removal in a protocluster.

Formal links

1 machine-checked theorem link

Cited by

5 papers in Pith

An extreme ram-pressure stripping event in a protocluster at redshift 4.3

A Post-starburst Galaxy Undergoing Ram-pressure Stripping at Redshift 3.06

Quiescent fractions in high-redshift galaxy groups reflect their hot-or-cold state of gas accretion

A first [CII] view of high-z quiescent galaxies

A Post-starburst Galaxy Undergoing Ram-pressure Stripping at Redshift 3.06

Receipt and verification

First computed	2026-06-23T03:13:44.911434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e58f756e5dc7eeaabd4e799c490e85b059d606697d061c2e16bcf7a2eae241b5

Aliases

arxiv: 2503.21724 · arxiv_version: 2503.21724v4 · doi: 10.48550/arxiv.2503.21724 · pith_short_12: 4WHXK3S5Y7XK · pith_short_16: 4WHXK3S5Y7XKVPKO · pith_short_8: 4WHXK3S5

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/4WHXK3S5Y7XKVPKOPGOESDUFWB \
  | 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: e58f756e5dc7eeaabd4e799c490e85b059d606697d061c2e16bcf7a2eae241b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7867faf8e818a4a10cc8f44bfb30dea42d81950dc47b8dadc06fba50a2e86e5",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2025-03-27T17:36:57Z",
    "title_canon_sha256": "6a2e1088fe8e2948b1c0ec9e76e4b0c391244c487cc2a465b731f88410f811a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2503.21724",
    "kind": "arxiv",
    "version": 4
  }
}