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Molecular Cloud Formation in Shock-Compressed Layers

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Paper breakdownThe authors' claims, conditions and measurements, as JSON Signed receiptProof this review has not been altered
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Hiroshi Koyama, Shu-Ichiro Inutsuka (NAO, Japan)

Astrophysics · Submitted 24 Dec 1999

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim Our main result shows that thermal instability inside the shock-compressed layer produces a geometrically thin, dense layer in which a large amount of hydrogen molecules is formed.

how it is stated · asserted 1.00 read the record →

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arXiv IDastro-ph/9912509 (version 1)
Pith IDWSJ7PYNI, Pith's permanent record of this paper and its review
CitationHiroshi Koyama, Japan), Shu-Ichiro Inutsuka (NAO. "Molecular Cloud Formation in Shock-Compressed Layers." arXiv:astro-ph/9912509 (1999). https://pith.science/paper/WSJ7PYNI
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The compiled record

The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

Open the compiled record

Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 3,613 input tokens, $0.0002 reported.

What the abstract itself states, as probabilities: claims first 0.02 · states limitation 0.12 · human participants 0.01 · controlled comparison 0.03 · randomized assignment 0.01 · states quantitative result 0.06 · compares with prior results 0.05 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v1. Results and the main claim are underlined; .

We investigate the propagation of a shock wave into a warm neutral medium and cold neutral medium by one-dimensional hydrodynamic calculations with detailed treatment of thermal and chemical processes. Our main result shows that thermal instability inside the shock-compressed layer produces a geometrically thin, dense layer in which a large amount of hydrogen molecules is formed. Linear stability analysis suggests that this thermally-collapsed layer will fragment into small molecular cloudlets. We expect that frequent compression due to supernova explosions, stellar winds, spiral density waves, etc., in the galaxy make the interstellar medium occupied by these small molecular cloudlets.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#sentencerolethe authors' own workstates the main conclusionstrength
s0 We investigate the propagation of a shock wave into a warm neutral medium and cold neutral medium by one-dimensional hydrodynamic calculations with detailed treatment of thermal and chemical processes. method 0.94 0.94 0.02 asserted 0.85
s1 Our main result shows that thermal instability inside the shock-compressed layer produces a geometrically thin, dense layer in which a large amount of hydrogen molecules is formed. result 1.00 0.95 0.97 asserted 1.00
s2 Linear stability analysis suggests that this thermally-collapsed layer will fragment into small molecular cloudlets. interpretation 0.63 0.75 0.08 hedged possibility 1.00
s3 We expect that frequent compression due to supernova explosions, stellar winds, spiral density waves, etc., in the galaxy make the interstellar medium occupied by these small molecular cloudlets. interpretation 1.00 0.10 0.07 hedged possibility 0.51

What kind of paper the classifier reports this is: simulation study 1.00 · evidence from simulation or computation 1.00.

What was examined, and what was not

sources read
  • arXiv listing abstract v1
not examined
  • full text
  • figures and tables
  • references and citing sentences
  • relations to other papers
levels run
  • P abstract
not run
  • S sections
  • T body sentences
  • C citations
  • R cross-paper relations

Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper
Original abstract

We investigate the propagation of a shock wave into a warm neutral medium and cold neutral medium by one-dimensional hydrodynamic calculations with detailed treatment of thermal and chemical processes. Our main result shows that thermal instability inside the shock-compressed layer produces a geometrically thin, dense layer in which a large amount of hydrogen molecules is formed. Linear stability analysis suggests that this thermally-collapsed layer will fragment into small molecular cloudlets. We expect that frequent compression due to supernova explosions, stellar winds, spiral density waves, etc., in the galaxy make the interstellar medium occupied by these small molecular cloudlets.

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References
How the literature uses it

6 arXiv papers cite this in 6 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 4 sentences without a confident label

Uses its method or tool 2 papers

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