Triggered Star Formation in the W5 H<scp>ii</scp>Region
Bibliographic record
Abstract
Young, massive stars can have a profound effect on the surrounding interstellar medium. The triggering of star formation by an H II region expanding into nearby molecular material is an example of this type of interaction. This paper presents a multiwavelength study of the W5 star-forming region investigating the possibility of triggered star formation. The ionizing sources and the morphologies of the ionized and molecular gas and the dust are examined. A population of YSOs is identified. Statistical evidence for triggering of these YSOs is discussed in terms of the spatial dependence of the star formation efficiency and the clustering and correlation of the YSO sources with respect to the molecular gas and the H II region. Evidence for direct interactions between the components is discussed, on both large scales and the scale of individual objects. Timescales for the expansion of the H II region, triggering processes, and the ages of the YSOs are compared to establish a plausible sequence of events.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot 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.
Distilled classifier scores by category (both heads)
| 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 | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| 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 source (direct Gemma or distilled Codex), 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".