Bibliographic record
Abstract
The stellar content of the S0 galaxy NGC 5102 is investigated using deep r ′ and i ′ images obtained with GMOS-S. A modest population of bright main sequence stars and red supergiants (RSGs) is detected throughout the western portion of the disk. Based on the numbers of main sequence stars, the star formation rate (SFR) in NGC 5102 during the past ten million years is estimated to have been 0.02 M ⊙ year −1. The majority of red giant branch (RGB) stars in the disk of NGC 5102 have [M/H] between –0.9 and –0.1, and the metallicity distribution of RGB stars at intermediate galactocentric radii peaks near [M/H] ∼ −0.6. RGB stars are traced out to galactocentric distances of 10 kpc, which corresponds to ∼ 14 disk scale lengths. A large population of bright asymptotic giant branch (AGB) stars are seen throughout the western portion of the disk, and the youngest of these have log(tyr) ∼ 8.1. It is concluded that (1) stars that formed within the past Gyr comprise ∼ 20 % of the total stellar disk mass, and (2) the SFR during intermediate epochs in the disk of NGC 5102 was at least 1.4 M ⊙ year −1. Thus, large-scale star formation occured throughout the disk of NGC 5102 at approximately the same time that similar elevated levels of 1 Based on observations obtained at the Gemini Observatory, which is operated by the Association of
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
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".