MétaCan
Menu
Back to cohort
Record W4400584312 · doi:10.3847/2515-5172/ad61d9

New Spectroscopic Redshift Places PEARLSDG in a Group at ∼124 Mpc

2024· article· en· W4400584312 on OpenAlexaff
Timothy Carleton, S. P. Willner, T. P. Ellsworth-Bowers, Rogier A. Windhorst, Seth H. Cohen, Christopher J. Conselice, J. M. Diego, Adi Zitrin, Haylee N. Archer, Isabel McIntyre, Patrick S. Kamieneski, Rolf A. Jansen, Jake Summers, Jordan C. J. D’Silva, Anton M. Koekemoer, Dan Coe, Simon P. Driver, Brenda Frye, Norman A. Grogin, Madeline A. Marshall, M. Nonino, Nor Pirzkal, A. S. G. Robotham, Russell E. Ryan, Rafael Ortiz, Scott Tompkins, Christopher N. A. Willmer, Haojing Yan, Benne W. Holwerda

Bibliographic record

VenueResearch Notes of the AAS · 2024
Typearticle
Languageen
FieldPhysics and Astronomy
TopicStellar, planetary, and galactic studies
Canadian institutionsHerzberg Institute of Astrophysics
FundersScience and Technology Facilities CouncilSpace Telescope Science Institute
KeywordsRedshiftGalaxyAstrophysicsRedshift surveyPhysicsGroup (periodic table)Dwarf galaxyLocal GroupGalaxy groupGalaxy formation and evolutionQuantum mechanics

Abstract

fetched live from OpenAlex

Abstract PEARLSDG was previously reported as an isolated dwarf galaxy with a TRGB distance of 30 Mpc. New data show this to not be the case. We report a new spectroscopic redshift of 0.02809, which argues for an association with a group of galaxies at ∼124 Mpc.

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)0.001
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: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.010
Threshold uncertainty score0.034

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0030.001
Science and technology studies0.0010.001
Scholarly communication0.0010.001
Open science0.0010.002
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0100.002

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 head0.049
GPT teacher head0.343
Teacher spread0.294 · 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

Citations2
Published2024
Admission routes1
Has abstractyes

Explore more

Same venueResearch Notes of the AASSame topicStellar, planetary, and galactic studiesFrench-language works237,207