The Low-Resolution DRAO Survey of H<scp>i</scp>Emission from the Galactic Plane. II.
Bibliographic record
Abstract
In 2000, a survey of H I line emission in the Galactic plane between Galactic longitudes l = 72 2 and 149 0, covering latitudes from b = -5 4 to 7 2, made using the 26 m telescope at the Dominion Radio Astrophysical Observatory, was published as part of the Canadian Galactic Plane Survey project. The survey with the 26 m telescope has now been extended to cover longitudes from l = 50 0 to 195 0, between the same latitude limits. In addition, a region at higher Galactic latitudes ( b = 7 4–24 0) has been surveyed between longitudes l = 96 4 and 120 2. As in the initial survey, spectra were observed at 0 2 intervals of longitude and latitude (0.33 half-power beamwidths). (In an appendix, it is demonstrated that, when single-antenna data and interferometer data are to be combined, the single-antenna data must be sampled at an interval no greater than 0.5 times the half-power beamwidth of the single antenna. Coarser sampling will result in the introduction of spurious structure into the resulting images.) The spectral resolution is 1.32 km s -1 , and the LSR velocity range is -260–161 km s -1 . The spectra have been corrected for stray radiation and have an estimated T b scaling accuracy of 1% and an estimated rms noise in one channel (0.8245 km s -1 ) of 0.25 K. Regions of suspected strong H I self-absorption have been identified using a statistic characterizing the "complexity" of the observed spectra. Comparison with spectra from the Leiden/Dwingeloo Survey supports the conclusion from our earlier paper that a small percentage (∼1%–2%) of the spectra in the latter survey suffer from calibration errors exceeding 10%. A table of positions of the more discordant spectra is given.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.018 | 0.010 |
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".