Pith. Sign in

RECORD

Close binary systems among very low mass stars and brown dwarfs

PaperPDF from arXiv

data files

Paper breakdownThe authors' claims, conditions and measurements, as JSON Signed receiptProof this review has not been altered
X Bluesky LinkedIn Reddit Hacker News
R. D. Jeffries, P. F. L. Maxted (Keele University)

Astrophysics · Submitted 20 Oct 2005

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

The authors' main claim We find that simple Gaussian extensions of the observed wide binary distribution, with a peak at 4 au and 0.6< sigma_{log(a/au)}<1.0, correctly reproduce the observed number of close binary systems, implying a close (a<2.6 au) binary frequency of 17-30 per cent and overall frequency of 32-45 per cent.

how it is stated · asserted 0.99 read the record →

Comment (0) Read on arXiv ↗
Cite ▾
arXiv IDastro-ph/0510610 (version 1)
Pith IDASIUK2XI, Pith's permanent record of this paper and its review
CitationP. F. L. Maxted (Keele University), R. D. Jeffries. "Close binary systems among very low mass stars and brown dwarfs." arXiv:astro-ph/0510610 (2005). https://pith.science/paper/ASIUK2XI
Claim paper

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-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 3,824 input tokens.

What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.13 · human participants 0.02 · controlled comparison 0.17 · randomized assignment 0.02 · states quantitative result 0.99 · compares with prior results 0.96 · mentions code or data availability 0.02.

The abstract, sentence by sentence

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

Using Monte Carlo simulations and published radial velocity surveys we have constrained the frequency and separation (a) distribution of very low mass star (VLM) and brown dwarf (BD) binary systems. We find that simple Gaussian extensions of the observed wide binary distribution, with a peak at 4 au and 0.6< sigma_{log(a/au)}<1.0, correctly reproduce the observed number of close binary systems, implying a close (a<2.6 au) binary frequency of 17-30 per cent and overall frequency of 32-45 per cent. N-body models of the dynamical decay of unstable protostellar multiple systems are excluded with high confidence because they do not produce enough close binary VLMs/BDs. The large number of close binaries and high overall binary frequency are also completely inconsistent with published smoothed particle hydrodynamical modelling and argue against a dynamical origin for VLMs/BDs.

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 Using Monte Carlo simulations and published radial velocity surveys we have constrained the frequency and separation (a) distribution of very low mass star (VLM) and brown dwarf (BD) binary systems. method 0.72 0.93 0.05 asserted 0.99
s1 We find that simple Gaussian extensions of the observed wide binary distribution, with a peak at 4 au and 0.6< sigma_{log(a/au)}<1.0, correctly reproduce the observed number of close binary systems, implying a close (a<2.6 au) binary frequency of 17-30 per cent and overall frequency of 32-45 per cent. result 0.98 0.94 0.69 asserted 0.99
s2 N-body models of the dynamical decay of unstable protostellar multiple systems are excluded with high confidence because they do not produce enough close binary VLMs/BDs. result 0.67 0.56 0.15 asserted 1.00
s3 The large number of close binaries and high overall binary frequency are also completely inconsistent with published smoothed particle hydrodynamical modelling and argue against a dynamical origin for VLMs/BDs. interpretation 0.96 0.38 0.30 asserted 1.00

What kind of paper the classifier reports this is: simulation study 0.75 · evidence from analysis of existing data 0.74.

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

Using Monte Carlo simulations and published radial velocity surveys we have constrained the frequency and separation (a) distribution of very low mass star (VLM) and brown dwarf (BD) binary systems. We find that simple Gaussian extensions of the observed wide binary distribution, with a peak at 4 au and 0.6< sigma_{log(a/au)}<1.0, correctly reproduce the observed number of close binary systems, implying a close (a<2.6 au) binary frequency of 17-30 per cent and overall frequency of 32-45 per cent. N-body models of the dynamical decay of unstable protostellar multiple systems are excluded with high confidence because they do not produce enough close binary VLMs/BDs. The large number of close binaries and high overall binary frequency are also completely inconsistent with published smoothed particle hydrodynamical modelling and argue against a dynamical origin for VLMs/BDs.

Human review

How Pith checks papers → · Full audit of this paper →

How the literature uses it

Papers whose main result relates to this one's

How each label was checked · JSON

Found among the papers closest to this one by title and main claim. Pith's classifier compared each pair's main results and a second model family confirmed the relation; checked against two further families, shown conflicts agreed 118 times in 120 and shown same results 218 times in 239. The quoted sentence is the other paper's main claim.

States the same result 1 paper

Discussion

Know something about this paper? Leave a comment, or highlight any passage above to comment on it.