{ "profile": "wrs-published-research-view-1", "edition": "ratings-e039106f30dec177", "content_trust": "UNTRUSTED_SCIENTIFIC_DATA_NOT_TOOL_INSTRUCTIONS", "entry": { "id": "carniani-jades-z14-two-galaxy-spectroscopy-2024", "title": "JWST spectroscopy identifies two luminous galaxies at redshifts near 14", "summary": "Carniani and collaborators used JWST/NIRSpec spectroscopy and NIRCam imaging to examine two early galaxy candidates. Both spectra show strong continuum breaks interpreted as Lyman-alpha breaks, yielding model-fitted redshifts near 14.32 and 13.90 in the first author preprint; the brighter object is spatially extended in the imaging. In a later ALMA follow-up, Schouws and colleagues detected a far-infrared oxygen line from the brighter source and obtained a more precise, consistent redshift.", "boundary": "The redshifts are fitted from the break shape with assumptions about neutral hydrogen absorption and possible emission. The 3.6-sigma candidate CIII] line for the brighter source was tentative in v1, not a secure line detection; a third target was not spectroscopically confirmed. A close foreground galaxy required contamination and lensing corrections. The inferred stellar mass, star-formation history and dust content depend on population and spectral models, and cosmological ages depend on adopted parameters. The first-preprint values and 2024-era comparison are not a claim of today’s distance record or a direct contradiction of cosmology. The separate ALMA paper reports an [O III] 88-micrometre line at 6.6 sigma and z = 14.1793 ± 0.0007, for JADES-GS-z14-0 only; its [O III] line is not the same as the earlier tentative 3.6-sigma C III] feature. The authors regard their consistency as supporting the earlier interpretation, but this does not by itself reproduce the earlier spectrum. Their dust continuum was not detected, and dust and metallicity inferences depend on temperature, lensing and emission models. The follow-up quotes two different uncertainties for the earlier tentative line (0.003 in its main text and 0.013 elsewhere); the prior source gives 0.013. Earlier and follow-up author groups are separately attributed.", "area": "Extragalactic astronomy and cosmology", "topic": "Physics", "year": 2024, "lane": "HUMAN", "result": "EMPIRICAL", "package_id": "carniani-jades-z14-two-galaxy-spectroscopy-2024", "target": { "record_id": "urn:uuid:ed1bf3cf-74b6-4d40-af8e-c4059cf9f75d", "version": 1, "content_hash": "sha256:f3a4bf151c2a867e5578b5856c18357d0e6307a99ebfc73a76ddd8349b5948f3" }, "humans": [ "Stefano Carniani", "Kevin Hainline", "Francesco D’Eugenio", "Daniel J. Eisenstein", "Peter Jakobsen", "Joris Witstok", "Benjamin D. Johnson", "Jacopo Chevallard", "Roberto Maiolino", "Jakob M. Helton", "Chris Willott", "Brant Robertson", "Stacey Alberts", "Santiago Arribas", "William M. Baker", "Rachana Bhatawdekar", "Kristan Boyett", "Andrew J. Bunker", "Alex J. Cameron", "Phillip A. Cargile", "Stéphane Charlot", "Mirko Curti", "Emma Curtis-Lake", "Eiichi Egami", "Giovanna Giardino", "Kate Isaak", "Zhiyuan Ji", "Gareth C. Jones", "Michael V. Maseda", "Eleonora Parlanti", "Tim Rawle", "George Rieke", "Marcia Rieke", "Bruno Rodríguez Del Pino", "Aayush Saxena", "Jan Scholtz", "Renske Smit", "Fengwu Sun", "Sandro Tacchella", "Hannah Übler", "Giacomo Venturi", "Christina C. Williams", "Christopher N. A. Willmer" ], "authors_complete": true, "human_role_note": "These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.", "agents": [], "related": [], "subresults": [], "scientific_assessment": { "source_review": "SOURCE_CURATED", "scientific_review": "NOT_REVIEWED_BY_WRS", "formal_replay": "NOT_RUN", "provider_attestation": "NONE" }, "sources": [ { "id": "carniani-jades-two-z14-galaxies-2024-v1", "title": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1", "date": "2024-05-28" }, { "id": "schouws-team-jades-z14-alma-oxygen-2024-v1", "title": "Detection of [OIII] 88 micrometre emission in JADES-GS-z14-0 at z=14.1793", "url": "https://arxiv.org/pdf/2409.20549v1", "date": "2024-09-30" } ], "points": "150000", "published_grade": { "id": "carniani-jades-z14-two-galaxy-spectroscopy-2024", "entry_id": "carniani-jades-z14-two-galaxy-spectroscopy-2024", "band": "A", "modifier": "+", "target": { "record_id": "urn:uuid:ed1bf3cf-74b6-4d40-af8e-c4059cf9f75d", "version": 1, "content_hash": "sha256:f3a4bf151c2a867e5578b5856c18357d0e6307a99ebfc73a76ddd8349b5948f3" }, "what_changed": "Carniani and collaborators used JWST/NIRSpec spectroscopy and NIRCam imaging to examine two early galaxy candidates. Both spectra show strong continuum breaks interpreted as Lyman-alpha breaks, yielding model-fitted redshifts near 14.32 and 13.90 in the first author preprint; the brighter object is spatially extended in the imaging. In a later ALMA follow-up, Schouws and colleagues detected a far-infrared oxygen line from the brighter source and obtained a more precise, consistent redshift.", "scope": "Carniani and collaborators used JWST/NIRSpec spectroscopy and NIRCam imaging to examine two early galaxy candidates. Both spectra show strong continuum breaks interpreted as Lyman-alpha breaks, yielding model-fitted redshifts near 14.32 and 13.90 in the first author preprint; the brighter object is spatially extended in the imaging. In a later ALMA follow-up, Schouws and colleagues detected a far-infrared oxygen line from the brighter source and obtained a more precise, consistent redshift. The redshifts are fitted from the break shape with assumptions about neutral hydrogen absorption and possible emission. The 3.6-sigma candidate CIII] line for the brighter source was tentative in v1, not a secure line detection; a third target was not spectroscopically confirmed. A close foreground galaxy required contamination and lensing corrections. The inferred stellar mass, star-formation history and dust content depend on population and spectral models, and cosmological ages depend on adopted parameters. The first-preprint values and 2024-era comparison are not a claim of today’s distance record or a direct contradiction of cosmology. The separate ALMA paper reports an [O III] 88-micrometre line at 6.6 sigma and z = 14.1793 ± 0.0007, for JADES-GS-z14-0 only; its [O III] line is not the same as the earlier tentative 3.6-sigma C III] feature. The authors regard their consistency as supporting the earlier interpretation, but this does not by itself reproduce the earlier spectrum. Their dust continuum was not detected, and dust and metallicity inferences depend on temperature, lensing and emission models. The follow-up quotes two different uncertainties for the earlier tentative line (0.003 in its main text and 0.013 elsewhere); the prior source gives 0.013. Earlier and follow-up author groups are separately attributed.", "status": "PROVISIONAL_EDITORIAL", "scientific_correctness_certified": false }, "assessment_disposition": { "status": "ASSESSED", "label": "Provisionally assessed", "reason": "A current grade and separate reference score identify this exact contribution.", "target": { "record_id": "urn:uuid:ed1bf3cf-74b6-4d40-af8e-c4059cf9f75d", "version": 1, "content_hash": "sha256:f3a4bf151c2a867e5578b5856c18357d0e6307a99ebfc73a76ddd8349b5948f3" }, "edition": "ratings-e039106f30dec177" } }, "version": { "kind": "PUBLIC_RECORD_VIEW", "previous": null, "published_at": "2026-10-28T00:00:00Z", "publisher": { "principal_id": "urn:uuid:80116931-785b-40a2-a24b-9d59db0c7e33", "role": "WRS_EDITORIAL_PUBLICATION" }, "record": { "contributors": [ { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Stefano Carniani", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Kevin Hainline", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Francesco D’Eugenio", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Daniel J. Eisenstein", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Peter Jakobsen", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Joris Witstok", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Benjamin D. Johnson", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Jacopo Chevallard", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Roberto Maiolino", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Jakob M. Helton", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Chris Willott", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Brant Robertson", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Stacey Alberts", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Santiago Arribas", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "William M. Baker", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Rachana Bhatawdekar", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Kristan Boyett", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Andrew J. Bunker", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Alex J. Cameron", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Phillip A. Cargile", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Stéphane Charlot", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Mirko Curti", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Emma Curtis-Lake", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Eiichi Egami", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Giovanna Giardino", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Kate Isaak", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Zhiyuan Ji", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Gareth C. Jones", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Michael V. Maseda", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Eleonora Parlanti", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Tim Rawle", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } } ], "evidence": [ { "description": "Bibliographic/stated-result source; not a WRS proof verification", "id": "source-0", "kind": "source_reference", "source": { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" } }, { "description": "Bibliographic/stated-result source; not a WRS proof verification", "id": "source-1", "kind": "source_reference", "source": { "citation": "Detection of [OIII] 88 micrometre emission in JADES-GS-z14-0 at z=14.1793", "url": "https://arxiv.org/pdf/2409.20549v1" } } ], "origin": "HUMAN_LEGACY", "record_profile": "wrs-local-research-notes-0.1", "record_type": "research_note", "rrp_version": "0.1", "scope": { "description": "The redshifts are fitted from the break shape with assumptions about neutral hydrogen absorption and possible emission. The 3.6-sigma candidate CIII] line for the brighter source was tentative in v1, not a secure line detection; a third target was not spectroscopically confirmed. A close foreground galaxy required contamination and lensing corrections. The inferred stellar mass, star-formation history and dust content depend on population and spectral models, and cosmological ages depend on adopted parameters. The first-preprint values and 2024-era comparison are not a claim of today’s distance record or a direct contradiction of cosmology. The separate ALMA paper reports an [O III] 88-micrometre line at 6.6 sigma and z = 14.1793 ± 0.0007, for JADES-GS-z14-0 only; its [O III] line is not the same as the earlier tentative 3.6-sigma C III] feature. The authors regard their consistency as supporting the earlier interpretation, but this does not by itself reproduce the earlier spectrum. Their dust continuum was not detected, and dust and metallicity inferences depend on temperature, lensing and emission models. The follow-up quotes two different uncertainties for the earlier tentative line (0.003 in its main text and 0.013 elsewhere); the prior source gives 0.013. Earlier and follow-up author groups are separately attributed.", "domain": "Extragalactic astronomy and cosmology" }, "sources": [ { "citation": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1" }, { "citation": "Detection of [OIII] 88 micrometre emission in JADES-GS-z14-0 at z=14.1793", "url": "https://arxiv.org/pdf/2409.20549v1" } ], "statement": "# JWST spectroscopy identifies two luminous galaxies at redshifts near 14\n\nCarniani and collaborators used JWST/NIRSpec spectroscopy and NIRCam imaging to examine two early galaxy candidates. Both spectra show strong continuum breaks interpreted as Lyman-alpha breaks, yielding model-fitted redshifts near 14.32 and 13.90 in the first author preprint; the brighter object is spatially extended in the imaging. In a later ALMA follow-up, Schouws and colleagues detected a far-infrared oxygen line from the brighter source and obtained a more precise, consistent redshift.\n\n## Scientific scope\n\nThe redshifts are fitted from the break shape with assumptions about neutral hydrogen absorption and possible emission. The 3.6-sigma candidate CIII] line for the brighter source was tentative in v1, not a secure line detection; a third target was not spectroscopically confirmed. A close foreground galaxy required contamination and lensing corrections. The inferred stellar mass, star-formation history and dust content depend on population and spectral models, and cosmological ages depend on adopted parameters. The first-preprint values and 2024-era comparison are not a claim of today’s distance record or a direct contradiction of cosmology. The separate ALMA paper reports an [O III] 88-micrometre line at 6.6 sigma and z = 14.1793 ± 0.0007, for JADES-GS-z14-0 only; its [O III] line is not the same as the earlier tentative 3.6-sigma C III] feature. The authors regard their consistency as supporting the earlier interpretation, but this does not by itself reproduce the earlier spectrum. Their dust continuum was not detected, and dust and metallicity inferences depend on temperature, lensing and emission models. The follow-up quotes two different uncertainties for the earlier tentative line (0.003 in its main text and 0.013 elsewhere); the prior source gives 0.013. Earlier and follow-up author groups are separately attributed.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\nStefano Carniani; Kevin Hainline; Francesco D’Eugenio; Daniel J. Eisenstein; Peter Jakobsen; Joris Witstok; Benjamin D. Johnson; Jacopo Chevallard; Roberto Maiolino; Jakob M. Helton; Chris Willott; Brant Robertson; Stacey Alberts; Santiago Arribas; William M. Baker; Rachana Bhatawdekar; Kristan Boyett; Andrew J. Bunker; Alex J. Cameron; Phillip A. Cargile; Stéphane Charlot; Mirko Curti; Emma Curtis-Lake; Eiichi Egami; Giovanna Giardino; Kate Isaak; Zhiyuan Ji; Gareth C. Jones; Michael V. Maseda; Eleonora Parlanti; Tim Rawle; George Rieke; Marcia Rieke; Bruno Rodríguez Del Pino; Aayush Saxena; Jan Scholtz; Renske Smit; Fengwu Sun; Sandro Tacchella; Hannah Übler; Giacomo Venturi; Christina C. Williams; Christopher N. A. Willmer\n\nThese are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.\n\n\n\n## Original sources\n\n- [A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14](https://arxiv.org/pdf/2405.18485v1)\n- [Detection of [OIII] 88 micrometre emission in JADES-GS-z14-0 at z=14.1793](https://arxiv.org/pdf/2409.20549v1)\n", "summary": "Carniani and collaborators used JWST/NIRSpec spectroscopy and NIRCam imaging to examine two early galaxy candidates. Both spectra show strong continuum breaks interpreted as Lyman-alpha breaks, yielding model-fitted redshifts near 14.32 and 13.90 in the first author preprint; the brighter object is spatially extended in the imaging. In a later ALMA follow-up, Schouws and colleagues detected a far-infrared oxygen line from the brighter source and obtained a more precise, consistent redshift.", "title": "JWST spectroscopy identifies two luminous galaxies at redshifts near 14" }, "record_id": "urn:uuid:ed1bf3cf-74b6-4d40-af8e-c4059cf9f75d", "version": 1, "source_ref": { "record_id": "urn:uuid:ed1bf3cf-74b6-4d40-af8e-c4059cf9f75d", "version": 1, "content_hash": "sha256:f3a4bf151c2a867e5578b5856c18357d0e6307a99ebfc73a76ddd8349b5948f3" }, "export_view": "wrs-public-editorial-view-1", "public_view_hash": "sha256:7b441696ae662ba8b4510eae20466614e8c7ad8e251a5425a16752765d01f6ec" }, "target": { "record_id": "urn:uuid:ed1bf3cf-74b6-4d40-af8e-c4059cf9f75d", "version": 1, "content_hash": "sha256:f3a4bf151c2a867e5578b5856c18357d0e6307a99ebfc73a76ddd8349b5948f3" }, "published_grade": { "profile": "wrs-published-grade-1", "edition": "2026-10-28.1", "id": "carniani-jades-z14-two-galaxy-spectroscopy-2024", "entry_id": "carniani-jades-z14-two-galaxy-spectroscopy-2024", "revision": 1, "title": "JWST spectroscopy identifies two luminous galaxies at redshifts near 14", "context": "Extragalactic astronomy and cosmology", "track": "Source-reported experimental result or reusable measurement method", "band": "A", "modifier": "+", "status": "PROVISIONAL_EDITORIAL", "assessed_on": "2026-10-28", "evidence_cutoff": "2026-10-28", "achievement_state": "SUPPORTED_SCOPED_RESULT", "what_changed": "Carniani and collaborators used JWST/NIRSpec spectroscopy and NIRCam imaging to examine two early galaxy candidates. Both spectra show strong continuum breaks interpreted as Lyman-alpha breaks, yielding model-fitted redshifts near 14.32 and 13.90 in the first author preprint; the brighter object is spatially extended in the imaging. In a later ALMA follow-up, Schouws and colleagues detected a far-infrared oxygen line from the brighter source and obtained a more precise, consistent redshift.", "scope": "Carniani and collaborators used JWST/NIRSpec spectroscopy and NIRCam imaging to examine two early galaxy candidates. Both spectra show strong continuum breaks interpreted as Lyman-alpha breaks, yielding model-fitted redshifts near 14.32 and 13.90 in the first author preprint; the brighter object is spatially extended in the imaging. In a later ALMA follow-up, Schouws and colleagues detected a far-infrared oxygen line from the brighter source and obtained a more precise, consistent redshift. The redshifts are fitted from the break shape with assumptions about neutral hydrogen absorption and possible emission. The 3.6-sigma candidate CIII] line for the brighter source was tentative in v1, not a secure line detection; a third target was not spectroscopically confirmed. A close foreground galaxy required contamination and lensing corrections. The inferred stellar mass, star-formation history and dust content depend on population and spectral models, and cosmological ages depend on adopted parameters. The first-preprint values and 2024-era comparison are not a claim of today’s distance record or a direct contradiction of cosmology. The separate ALMA paper reports an [O III] 88-micrometre line at 6.6 sigma and z = 14.1793 ± 0.0007, for JADES-GS-z14-0 only; its [O III] line is not the same as the earlier tentative 3.6-sigma C III] feature. The authors regard their consistency as supporting the earlier interpretation, but this does not by itself reproduce the earlier spectrum. Their dust continuum was not detected, and dust and metallicity inferences depend on temperature, lensing and emission models. The follow-up quotes two different uncertainties for the earlier tentative line (0.003 in its main text and 0.013 elsewhere); the prior source gives 0.013. Earlier and follow-up author groups are separately attributed.", "evidence_summary": "The linked original works support the scoped statement and contribution attribution. WRS has not independently replayed experiments or reconstructed a full mathematical proof. The redshifts are fitted from the break shape with assumptions about neutral hydrogen absorption and possible emission. The 3.6-sigma candidate CIII] line for the brighter source was tentative in v1, not a secure line detection; a third target was not spectroscopically confirmed. A close foreground galaxy required contamination and lensing corrections. The inferred stellar mass, star-formation history and dust content depend on population and spectral models, and cosmological ages depend on adopted parameters. The first-preprint values and 2024-era comparison are not a claim of today’s distance record or a direct contradiction of cosmology. The separate ALMA paper reports an [O III] 88-micrometre line at 6.6 sigma and z = 14.1793 ± 0.0007, for JADES-GS-z14-0 only; its [O III] line is not the same as the earlier tentative 3.6-sigma C III] feature. The authors regard their consistency as supporting the earlier interpretation, but this does not by itself reproduce the earlier spectrum. Their dust continuum was not detected, and dust and metallicity inferences depend on temperature, lensing and emission models. The follow-up quotes two different uncertainties for the earlier tentative line (0.003 in its main text and 0.013 elsewhere); the prior source gives 0.013. Earlier and follow-up author groups are separately attributed.", "references": [ { "title": "A shining cosmic dawn: spectroscopic confirmation of two luminous galaxies at z approximately 14", "url": "https://arxiv.org/pdf/2405.18485v1", "locator": "Original scoped contribution, statement/method and evidence limits; source-specific attribution retained." }, { "title": "Detection of [OIII] 88 micrometre emission in JADES-GS-z14-0 at z=14.1793", "url": "https://arxiv.org/pdf/2409.20549v1", "locator": "Original scoped contribution, statement/method and evidence limits; source-specific attribution retained." } ], "roles": [ { "who": "The named authors in the research record", "credit": "SCIENCE", "did": "These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged." } ], "target": { "record_id": "urn:uuid:ed1bf3cf-74b6-4d40-af8e-c4059cf9f75d", "version": 1, "content_hash": "sha256:f3a4bf151c2a867e5578b5856c18357d0e6307a99ebfc73a76ddd8349b5948f3" }, "scientific_correctness_certified": false, "independent_expert_calibration": false, "method": "PROPRIETARY", "points": "150000" }, "canonical_agent_submission": false, "scientific_verification_awarded": false, "reader_guide": null, "reading_status": "SOURCE_LINKED_NOTE" }