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Record W2001892358 · doi:10.1086/323705

The Stars in Camelopardalis OB1: Their Distance and Evolutionary History

2001· article· en· W2001892358 on OpenAlexaff
David A. Lyder

Bibliographic record

VenueThe Astronomical Journal · 2001
Typearticle
Languageen
FieldPhysics and Astronomy
TopicStellar, planetary, and galactic studies
Canadian institutionsThe King's UniversityUniversity of VictoriaHerzberg Institute of Astrophysics
Fundersnot available
KeywordsPhysicsStarsAstrophysicsHertzsprung–Russell diagramMain sequenceAstronomyHerbig Ae/Be starStar formationPopulationT Tauri starAsymmetrySupergiantK-type main-sequence starStellar evolution

Abstract

fetched live from OpenAlex

An investigation is undertaken of the optically identified Population I objects in the Cam OB1 region. From the analysis of these objects it is determined that the distance to the Cam OB1 stars is 975 ± 90 pc. A theoretical H-R diagram for the Cam OB1 stars reveals that star formation has been going on in the region for 1 × 10 6 –1 × 10 8 yr. At present, the most active site of star formation is Cam R1, which shows an asymmetry in the distribution of optically identified Population I objects. The majority of the pre–main-sequence stars lie in the northern half of the association, while the main-sequence stars and evolved stars lie in the southern half.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.003
Threshold uncertainty score0.006

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0020.001
Science and technology studies0.0010.000
Scholarly communication0.0010.001
Open science0.0000.001
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.001

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.011
GPT teacher head0.198
Teacher spread0.187 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations9
Published2001
Admission routes1
Has abstractyes

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