Pith. Sign in

RECORD

Improved age constraints for the AB Dor quadruple system - The binary nature of AB Dor B

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
Markus Janson, Wolfgang Brandner, Rainer Lenzen, Laird Close, Eric Nielsen, Markus Hartung, Thomas Henning, Herve Bouy

Astrophysics · Submitted 20 Nov 2006

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

The authors' main claim This leads to an age estimate of about 50 to 100 Myr.

how it is stated · asserted 0.78 read the record →

Comment (0) Read on arXiv ↗
Cite ▾
arXiv IDastro-ph/0611616 (version 1)
Pith ID4WHPPLIW, Pith's permanent record of this paper and its review
CitationEric Nielsen, Herve Bouy, Laird Close, Markus Hartung, Markus Janson, Rainer Lenzen, Thomas Henning, Wolfgang Brandner. "Improved age constraints for the AB Dor quadruple system - The binary nature of AB Dor B." arXiv:astro-ph/0611616 (2006). https://pith.science/paper/4WHPPLIW
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-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 5,552 input tokens, $0.0002 reported.

What the abstract itself states, as probabilities: claims first 0.04 · states limitation 0.30 · human participants 0.01 · controlled comparison 0.07 · randomized assignment 0.01 · states quantitative result 0.99 · compares with prior results 0.94 · mentions code or data availability 0.02.

The abstract, sentence by sentence

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

We present resolved NACO photometry of the close binary AB Dor B in H- and Ks-band. AB Dor B is itself known to be a wide binary companion to AB Dor A, which in turn has a very low-mass close companion named AB Dor C. These four known components make up the young and dynamically interesting system AB Dor, which will likely become a benchmark system for calibrating theoretical pre-main sequence evolutionary mass tracks for low-mass stars. However, for this purpose the actual age has to be known, and this subject has been a matter of discussion in the recent scientific literature. We compare our resolved photometry of AB Dor Ba and Bb with theoretical and empirical isochrones in order to constrain the age of the system. This leads to an age estimate of about 50 to 100 Myr. We discuss the implications of such an age range for the case of AB Dor C, and compare with other results in the literature.

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 present resolved NACO photometry of the close binary AB Dor B in H- and Ks-band. contribution 0.57 0.96 0.03 asserted 1.00
s1 AB Dor B is itself known to be a wide binary companion to AB Dor A, which in turn has a very low-mass close companion named AB Dor C. background 1.00 0.05 0.02 asserted 1.00
s2 These four known components make up the young and dynamically interesting system AB Dor, which will likely become a benchmark system for calibrating theoretical pre-main sequence evolutionary mass tracks for low-mass stars. background 0.98 0.07 0.04 hedged possibility 0.77
s3 However, for this purpose the actual age has to be known, and this subject has been a matter of discussion in the recent scientific literature. gap 0.89 0.04 0.02 asserted 0.96
s4 We compare our resolved photometry of AB Dor Ba and Bb with theoretical and empirical isochrones in order to constrain the age of the system. method 0.93 0.95 0.06 asserted 0.95
s5 This leads to an age estimate of about 50 to 100 Myr. result 1.00 0.94 0.83 asserted 0.78
s6 We discuss the implications of such an age range for the case of AB Dor C, and compare with other results in the literature. interpretation 0.72 0.69 0.05 unclear 0.62

What kind of paper the classifier reports this is: empirical study 1.00 · evidence from observation or experiment 0.99.

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 present resolved NACO photometry of the close binary AB Dor B in H- and Ks-band. AB Dor B is itself known to be a wide binary companion to AB Dor A, which in turn has a very low-mass close companion named AB Dor C. These four known components make up the young and dynamically interesting system AB Dor, which will likely become a benchmark system for calibrating theoretical pre-main sequence evolutionary mass tracks for low-mass stars. However, for this purpose the actual age has to be known, and this subject has been a matter of discussion in the recent scientific literature. We compare our resolved photometry of AB Dor Ba and Bb with theoretical and empirical isochrones in order to constrain the age of the system. This leads to an age estimate of about 50 to 100 Myr. We discuss the implications of such an age range for the case of AB Dor C, and compare with other results in the literature.

Human review

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

Discussion

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