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Record W1965715279 · doi:10.1002/asna.200811084

The Galactic warp as seen from 2MASS survey

2008· article· en· W1965715279 on OpenAlexaff
A. C. Robin, C. Reylé, D. J. Marshall

Bibliographic record

VenueAstronomische Nachrichten · 2008
Typearticle
Languageen
FieldPhysics and Astronomy
TopicStellar, planetary, and galactic studies
Canadian institutionsUniversité LavalCentre for Research in Astrophysics of Québec
Fundersnot available
KeywordsGalaxyPhysicsAstrophysicsStarsLongitudeAstronomyLatitude

Abstract

fetched live from OpenAlex

Abstract The 2MASS survey is used to trace the shape of the external Galaxy where an asymmetric warp is detected. We use the Besançon Galaxy model to quantify the parameters of the stellar warp in the outer part of the Galaxy. The shape of the stellar warp is then compared with previous results and with similar structures in gas and dust. We find new constraints on the stellar warp, which is shown to be not symmetrical on both sides of the Galaxy, similar to observations of H I. The positive longitude side is found to be easily modeled with a normal warp but with a slope significantly smaller than the slope seen in the H I warp. At negative longitudes, the warp presents peculiarities which are not well reproduced by any model, even with a 3‐Fourier mode warp. Finally, comparing with the warp seen in the dust, it seems to follow a slope intermediate between the gas and the stars. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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 score0.007

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0020.001

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 head0.019
GPT teacher head0.228
Teacher spread0.209 · 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

Citations10
Published2008
Admission routes1
Has abstractyes

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