Bibliographic record
Abstract
Stars in the mass range of 8 to 12 M (solar masses) represent the transition region between those that end their lives producing white dwarfs and those that undergo a core-collapse supernova and produce neutron stars. The final phases of stellar evolution of these intermediate-mass stars are tightly connected to the behavior of nuclear reactions at high densities. Despite their importance, the stellar evolution of intermediate-mass stars has received little attention in the past. The pioneering work in this mass range was published by Nomoto in the 80’s [1, 2]. Numerical and computational difficulties had hindered progress in the past, however two recent stellar evolution studies [3, 4] revived the interest in intermediate-mass stars. We explore nuclear processes that may be relevant for the modeling of these stars, starting from the neon burning stage. We show, that due to electron captures on 20Ne, 20O becomes abundant in the stellar core. This opens new reaction channels that have so far not been considered. These reactions modify the standard neon-burning that now proceeds by the reactions 20Ne(γ,α) 16O, followed by 20O(α,γ) 24Ne. Once the stellar core reaches a sufficiently high temperature, also the fusion reactions of neutron-rich oxygen isotopes, 16O + 20O→ 36S∗ and 20O + 20O→ 40S∗, may become important.
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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 | 0.000 | 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 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".