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Record W1969260612 · doi:10.1086/322266

The Interstellar Medium of M32

2001· article· en· W1969260612 on OpenAlexaff
G. A. Welch, Leslie J. Sage

Bibliographic record

VenueThe Astrophysical Journal · 2001
Typearticle
Languageen
FieldPhysics and Astronomy
TopicAstrophysics and Star Formation Studies
Canadian institutionsSaint Mary's University
Fundersnot available
KeywordsPhysicsAstrophysicsElliptical galaxyAstronomyGalaxySpiral galaxyLocal GroupBarred spiral galaxyIrregular galaxyLenticular galaxyInterstellar mediumInteracting galaxyDwarf galaxy

Abstract

fetched live from OpenAlex

The elliptical galaxy M32 is one of several small satellites of the giant spiral galaxy M31, which is the first-ranked member of the Local Group. We have used the Very Large Array to search for atomic hydrogen in M32, thereby complementing our earlier attempt to detect molecular gas in this galaxy. No emission is seen near the -205 km s -1 optical velocity of M32, which allows us to derive an upper limit of 2400 M ☉ for the H I mass in the inner 55''. When combined with the earlier upper limit on the molecular mass, we find that this area of the galaxy contains less than 4% of the gas expected from stellar mass return. In this respect, M32 presents a remarkable contrast to NGC 185 and NGC 205, two other companion galaxies of M31 that appear essentially identical in every way except for the gas mass.

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)0.000
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: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.003
Threshold uncertainty score0.010

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0010.000
Scholarly communication0.0010.001
Open science0.0000.001
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0030.001

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 head0.010
GPT teacher head0.236
Teacher spread0.226 · 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

Citations12
Published2001
Admission routes1
Has abstractyes

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