Pith Number

pith:CRZ4OPQC

pith:2026:CRZ4OPQCWN4JTH7BFXGYZXNKNN

not attested not anchored not stored refs resolved

Space as a spectroscopic laboratory: High-resolution spectroscopy of the [$^{13}$C II] hyperfine structure with SOFIA/upGREAT

A. G. G. M. Tielens, C. Guevara, D. A. Riechers, J. Stutzki, L. Schneider, M. Mertens, N. Schneider, O. Asvany, R. G\"usten, R. Higgins, R. Simon, S. Kabanovic, S. Schlemmer, U. U. Graf, V. Ossenkopf-Okada, Y. Okada

Astronomical spectra from SOFIA yield the first experimental magnetic-dipole hyperfine constants for [13C II]

arxiv:2605.07995 v1 · 2026-05-08 · astro-ph.GA · physics.atom-ph

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\usepackage{pith}
\pithnumber{CRZ4OPQCWN4JTH7BFXGYZXNKNN}

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Record completeness

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2 Internet Archive

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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

From these astronomical data we determine, for the first time, the magnetic-dipole hfs constants A_{1/2}^{hf} = 810.71(11) MHz and A_{3/2}^{hf} = 162.18(5) MHz of the [^{13}C II] 2s^2 2p ^2P^o ground term.

C2weakest assumption

The velocity distribution, excitation conditions, and line-of-sight structure are identical for the [12C II] and [13C II] emitting gas, so that the [12C II] profile can be used as an unshifted reference template for fitting the [13C II] hyperfine components without additional differential broadening or velocity offsets.

C3one line summary

SOFIA observations provide the first experimental magnetic-dipole hyperfine constants for [13C II] and refined centroid frequency using astronomical data.

References

213 extracted · 213 resolved · 0 Pith anchors

[1] A geometric distance measurement to the Galactic center black hole with 0.3\. , keywords =. doi:10.1051/0004-6361/201935656 , archivePrefix =. 1904.05721 , primaryClass = 1904 · doi:10.1051/0004-6361/201935656

[2] The physical properties of the dust in the RCW 120 H II region as seen by Herschel. , keywords =. doi:10.1051/0004-6361/201014657 , archivePrefix =. 1005.1565 , primaryClass = · doi:10.1051/0004-6361/201014657

[3] D., et al., 2012, @doi [ ] 10.1051/0004-6361/201117283 , https://ui.adsabs.harvard.edu/abs/2012A&A...542A..10A 542, A10 · doi:10.1051/0004-6361/201117283

[4] The WISE Catalog of Galactic H II Regions. , keywords =. doi:10.1088/0067-0049/212/1/1 , archivePrefix =. 1312.6202 , primaryClass = · doi:10.1088/0067-0049/212/1/1

[5] Mopra CO Observations of the Bubble H II Region RCW 120. , keywords =. doi:10.1088/0004-637X/800/2/101 , archivePrefix =. 1412.6470 , primaryClass = · doi:10.1088/0004-637x/800/2/101

Receipt and verification

First computed	2026-06-19T16:10:38.588674Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1473c73e02b378999fe12dcd8cddaa6b58dec9afa7c96829e216f3e30e26db51

Aliases

arxiv: 2605.07995 · arxiv_version: 2605.07995v1 · doi: 10.48550/arxiv.2605.07995 · pith_short_12: CRZ4OPQCWN4J · pith_short_16: CRZ4OPQCWN4JTH7B · pith_short_8: CRZ4OPQC

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/CRZ4OPQCWN4JTH7BFXGYZXNKNN \
  | 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: 1473c73e02b378999fe12dcd8cddaa6b58dec9afa7c96829e216f3e30e26db51

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a1d0993c17cc78202bbb383b628a1cfce468fa46bfa0b9907a15934957143b2",
    "cross_cats_sorted": [
      "physics.atom-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-05-08T16:50:34Z",
    "title_canon_sha256": "0e1c228027ab377a6e41927aff5be6b1b4a866ae805cb22f7b1852ae0ce0a5b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.07995",
    "kind": "arxiv",
    "version": 1
  }
}