Pith Number

pith:WTOJO5IV

pith:2026:WTOJO5IVJQ23OKKJAEDHGIG43T

not attested not anchored not stored refs resolved

HI Observations of Baryon-Dominated Dwarf Galaxy Candidates

Abhinav Narayan, Atharva Mirashi, Harshal Raut, Juliana Saponara, K. Keerthi, Mousumi Das, Narendra Nath Patra, Nirupam Roy, Prerana Biswas, Saurabh Kadawla

Resolved HI observations reveal that four dwarf galaxies are dark-matter deficient after correcting for underestimated inclinations.

arxiv:2605.17253 v1 · 2026-05-17 · astro-ph.GA · astro-ph.CO

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\usepackage{pith}
\pithnumber{WTOJO5IVJQ23OKKJAEDHGIG43T}

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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

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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

Four of these galaxies, UGC 6438, UGC 7983, AGC 191707, and AGC 733302, appear dark-matter deficient. The latter three exhibit high baryon enhancement efficiency factor exceeding 50%, with AGC 191707 appearing formally super-efficient. Only UGC 9500 and AGC 220901 are consistent with being dark-matter dominated.

C2weakest assumption

That the high-resolution HI cubes from uGMRT allow reliable determination of true disc thickness, kinematic position angles, and circular velocities without significant contamination from non-circular motions, warps, or beam-smearing effects in these irregular dwarfs (implied in the transition from global spectra to resolved kinematics).

C3one line summary

Resolved HI observations of six baryon-dominated dwarf galaxy candidates show four are dark-matter deficient with high baryon efficiency, two in isolated environments without tidal signs.

References

300 extracted · 300 resolved · 59 Pith anchors

[1] , archivePrefix = "arXiv", eprint = · doi:10.1088/0067-0049/182/2/543

[2] doi:10.1088/0004-637X/768/1/77 , shorttitle = · doi:10.1088/0004-637x/768/1/77

[3] , archivePrefix = "arXiv", eprint = · doi:10.1051/0004-6361/201425211

[4] Identifying galaxy candidates in WSRT HI imaging of ultra-compact high velocity clouds · doi:10.1051/0004-6361/201629262

[5] Deep neutral hydrogen observations of Leo T with the Westerbork Synthesis Radio Telescope · doi:10.1051/0004-6361/201732017

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-20T00:03:47.809525Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4dc9775154c35b7294901067320dcdcdccaa4eaa4a724d2efa928e56b07cc39

Aliases

arxiv: 2605.17253 · arxiv_version: 2605.17253v1 · doi: 10.48550/arxiv.2605.17253 · pith_short_12: WTOJO5IVJQ23 · pith_short_16: WTOJO5IVJQ23OKKJ · pith_short_8: WTOJO5IV

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/WTOJO5IVJQ23OKKJAEDHGIG43T \
  | 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: b4dc9775154c35b7294901067320dcdcdccaa4eaa4a724d2efa928e56b07cc39

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c8b6f65f47249a302deb48773b484cdd0b0b2cf9b67ddd69356f1f505528c39",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-05-17T04:22:59Z",
    "title_canon_sha256": "d21583aa2c91e2f3ad422a1c5442cc36506212b6bc24d8b191b550902244643f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.17253",
    "kind": "arxiv",
    "version": 1
  }
}