{ "profile": "wrs-published-research-view-1", "edition": "ratings-e039106f30dec177", "content_trust": "UNTRUSTED_SCIENTIFIC_DATA_NOT_TOOL_INSTRUCTIONS", "entry": { "id": "knutson-hd189733b-infrared-phase-map-2007", "title": "Infrared day–night brightness mapping of HD 189733b", "summary": "Knutson and colleagues used the Spitzer Space Telescope to measure an 8-micrometre phase curve of the transiting hot Jupiter HD 189733b over slightly more than half an orbit. They inferred a modest day–night brightness contrast and an eastward offset of the brightest hemisphere, consistent with atmospheric transport of heat. A regularized longitudinal-slice fit gave a coarse brightness map rather than a spatially resolved picture.", "boundary": "The measured signal is combined star-plus-planet flux and depends on correction of an illumination-dependent detector ramp and potential stellar-spot variability. The reported 973 ± 33 K and 1212 ± 11 K are minimum and maximum hemisphere-averaged brightness temperatures at one wavelength, not full three-dimensional atmospheric temperatures. The phase-curve maximum is about 16° before opposition; the separately fitted brightest longitude slice is around 30° east of the substellar point. Latitude structure is assumed, not measured, and the map has coarse 30° longitudinal bins. Winds, heat redistribution and orbital eccentricity are interpretations subject to model and timing assumptions.", "area": "Astrophysics", "topic": "Physics", "year": 2007, "lane": "HUMAN", "result": "EMPIRICAL", "package_id": "knutson-hd189733b-infrared-phase-map-2007", "target": { "record_id": "urn:uuid:58c1f414-66d5-48d7-a423-f9633c95e387", "version": 1, "content_hash": "sha256:72454d2467ffc3f8fc3eddff53b62b99e0a82e3d44596ab38d00773c5b6bcba4" }, "humans": [ "Heather A. Knutson", "David Charbonneau", "Lori E. Allen", "Jonathan J. Fortney", "Eric Agol", "Nicolas B. Cowan", "Adam P. Showman", "Curtis S. Cooper", "S. Thomas Megeath" ], "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": "knutson-hd189733b-8micron-phase-map-2007", "title": "A map of the day–night contrast of the extrasolar planet HD 189733b", "url": "https://www.ucolick.org/~jfortney/papers/Knutson07.pdf", "date": "2007-05-10" } ], "points": "160000", "published_grade": { "id": "knutson-hd189733b-infrared-phase-map-2007", "entry_id": "knutson-hd189733b-infrared-phase-map-2007", "band": "A", "modifier": "+", "target": { "record_id": "urn:uuid:58c1f414-66d5-48d7-a423-f9633c95e387", "version": 1, "content_hash": "sha256:72454d2467ffc3f8fc3eddff53b62b99e0a82e3d44596ab38d00773c5b6bcba4" }, "what_changed": "Knutson and colleagues used the Spitzer Space Telescope to measure an 8-micrometre phase curve of the transiting hot Jupiter HD 189733b over slightly more than half an orbit. They inferred a modest day–night brightness contrast and an eastward offset of the brightest hemisphere, consistent with atmospheric transport of heat. A regularized longitudinal-slice fit gave a coarse brightness map rather than a spatially resolved picture.", "scope": "Knutson and colleagues used the Spitzer Space Telescope to measure an 8-micrometre phase curve of the transiting hot Jupiter HD 189733b over slightly more than half an orbit. They inferred a modest day–night brightness contrast and an eastward offset of the brightest hemisphere, consistent with atmospheric transport of heat. A regularized longitudinal-slice fit gave a coarse brightness map rather than a spatially resolved picture. The measured signal is combined star-plus-planet flux and depends on correction of an illumination-dependent detector ramp and potential stellar-spot variability. The reported 973 ± 33 K and 1212 ± 11 K are minimum and maximum hemisphere-averaged brightness temperatures at one wavelength, not full three-dimensional atmospheric temperatures. The phase-curve maximum is about 16° before opposition; the separately fitted brightest longitude slice is around 30° east of the substellar point. Latitude structure is assumed, not measured, and the map has coarse 30° longitudinal bins. Winds, heat redistribution and orbital eccentricity are interpretations subject to model and timing assumptions.", "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:58c1f414-66d5-48d7-a423-f9633c95e387", "version": 1, "content_hash": "sha256:72454d2467ffc3f8fc3eddff53b62b99e0a82e3d44596ab38d00773c5b6bcba4" }, "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": "Heather A. Knutson", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A map of the day–night contrast of the extrasolar planet HD 189733b", "url": "https://www.ucolick.org/~jfortney/papers/Knutson07.pdf" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "David Charbonneau", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A map of the day–night contrast of the extrasolar planet HD 189733b", "url": "https://www.ucolick.org/~jfortney/papers/Knutson07.pdf" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Lori E. Allen", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A map of the day–night contrast of the extrasolar planet HD 189733b", "url": "https://www.ucolick.org/~jfortney/papers/Knutson07.pdf" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Jonathan J. Fortney", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A map of the day–night contrast of the extrasolar planet HD 189733b", "url": "https://www.ucolick.org/~jfortney/papers/Knutson07.pdf" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Eric Agol", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A map of the day–night contrast of the extrasolar planet HD 189733b", "url": "https://www.ucolick.org/~jfortney/papers/Knutson07.pdf" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Nicolas B. Cowan", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A map of the day–night contrast of the extrasolar planet HD 189733b", "url": "https://www.ucolick.org/~jfortney/papers/Knutson07.pdf" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Adam P. Showman", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A map of the day–night contrast of the extrasolar planet HD 189733b", "url": "https://www.ucolick.org/~jfortney/papers/Knutson07.pdf" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Curtis S. Cooper", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A map of the day–night contrast of the extrasolar planet HD 189733b", "url": "https://www.ucolick.org/~jfortney/papers/Knutson07.pdf" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "S. Thomas Megeath", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "A map of the day–night contrast of the extrasolar planet HD 189733b", "url": "https://www.ucolick.org/~jfortney/papers/Knutson07.pdf" } } ], "evidence": [ { "description": "Bibliographic/stated-result source; not a WRS proof verification", "id": "source-0", "kind": "source_reference", "source": { "citation": "A map of the day–night contrast of the extrasolar planet HD 189733b", "url": "https://www.ucolick.org/~jfortney/papers/Knutson07.pdf" } } ], "origin": "HUMAN_LEGACY", "record_profile": "wrs-local-research-notes-0.1", "record_type": "research_note", "rrp_version": "0.1", "scope": { "description": "The measured signal is combined star-plus-planet flux and depends on correction of an illumination-dependent detector ramp and potential stellar-spot variability. The reported 973 ± 33 K and 1212 ± 11 K are minimum and maximum hemisphere-averaged brightness temperatures at one wavelength, not full three-dimensional atmospheric temperatures. The phase-curve maximum is about 16° before opposition; the separately fitted brightest longitude slice is around 30° east of the substellar point. Latitude structure is assumed, not measured, and the map has coarse 30° longitudinal bins. Winds, heat redistribution and orbital eccentricity are interpretations subject to model and timing assumptions.", "domain": "Astrophysics" }, "sources": [ { "citation": "A map of the day–night contrast of the extrasolar planet HD 189733b", "url": "https://www.ucolick.org/~jfortney/papers/Knutson07.pdf" } ], "statement": "# Infrared day–night brightness mapping of HD 189733b\n\nKnutson and colleagues used the Spitzer Space Telescope to measure an 8-micrometre phase curve of the transiting hot Jupiter HD 189733b over slightly more than half an orbit. They inferred a modest day–night brightness contrast and an eastward offset of the brightest hemisphere, consistent with atmospheric transport of heat. A regularized longitudinal-slice fit gave a coarse brightness map rather than a spatially resolved picture.\n\n## Scientific scope\n\nThe measured signal is combined star-plus-planet flux and depends on correction of an illumination-dependent detector ramp and potential stellar-spot variability. The reported 973 ± 33 K and 1212 ± 11 K are minimum and maximum hemisphere-averaged brightness temperatures at one wavelength, not full three-dimensional atmospheric temperatures. The phase-curve maximum is about 16° before opposition; the separately fitted brightest longitude slice is around 30° east of the substellar point. Latitude structure is assumed, not measured, and the map has coarse 30° longitudinal bins. Winds, heat redistribution and orbital eccentricity are interpretations subject to model and timing assumptions.\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\nHeather A. Knutson; David Charbonneau; Lori E. Allen; Jonathan J. Fortney; Eric Agol; Nicolas B. Cowan; Adam P. Showman; Curtis S. Cooper; S. Thomas Megeath\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 map of the day–night contrast of the extrasolar planet HD 189733b](https://www.ucolick.org/~jfortney/papers/Knutson07.pdf)\n", "summary": "Knutson and colleagues used the Spitzer Space Telescope to measure an 8-micrometre phase curve of the transiting hot Jupiter HD 189733b over slightly more than half an orbit. They inferred a modest day–night brightness contrast and an eastward offset of the brightest hemisphere, consistent with atmospheric transport of heat. A regularized longitudinal-slice fit gave a coarse brightness map rather than a spatially resolved picture.", "title": "Infrared day–night brightness mapping of HD 189733b" }, "record_id": "urn:uuid:58c1f414-66d5-48d7-a423-f9633c95e387", "version": 1, "source_ref": { "record_id": "urn:uuid:58c1f414-66d5-48d7-a423-f9633c95e387", "version": 1, "content_hash": "sha256:72454d2467ffc3f8fc3eddff53b62b99e0a82e3d44596ab38d00773c5b6bcba4" }, "export_view": "wrs-public-editorial-view-1", "public_view_hash": "sha256:d4c4d611798d3903b0d32644241bfa5c957dab9da2770c74d67a4cb3190b555c" }, "target": { "record_id": "urn:uuid:58c1f414-66d5-48d7-a423-f9633c95e387", "version": 1, "content_hash": "sha256:72454d2467ffc3f8fc3eddff53b62b99e0a82e3d44596ab38d00773c5b6bcba4" }, "published_grade": { "profile": "wrs-published-grade-1", "edition": "2026-10-28.1", "id": "knutson-hd189733b-infrared-phase-map-2007", "entry_id": "knutson-hd189733b-infrared-phase-map-2007", "revision": 1, "title": "Infrared day–night brightness mapping of HD 189733b", "context": "Astrophysics", "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": "Knutson and colleagues used the Spitzer Space Telescope to measure an 8-micrometre phase curve of the transiting hot Jupiter HD 189733b over slightly more than half an orbit. They inferred a modest day–night brightness contrast and an eastward offset of the brightest hemisphere, consistent with atmospheric transport of heat. A regularized longitudinal-slice fit gave a coarse brightness map rather than a spatially resolved picture.", "scope": "Knutson and colleagues used the Spitzer Space Telescope to measure an 8-micrometre phase curve of the transiting hot Jupiter HD 189733b over slightly more than half an orbit. They inferred a modest day–night brightness contrast and an eastward offset of the brightest hemisphere, consistent with atmospheric transport of heat. A regularized longitudinal-slice fit gave a coarse brightness map rather than a spatially resolved picture. The measured signal is combined star-plus-planet flux and depends on correction of an illumination-dependent detector ramp and potential stellar-spot variability. The reported 973 ± 33 K and 1212 ± 11 K are minimum and maximum hemisphere-averaged brightness temperatures at one wavelength, not full three-dimensional atmospheric temperatures. The phase-curve maximum is about 16° before opposition; the separately fitted brightest longitude slice is around 30° east of the substellar point. Latitude structure is assumed, not measured, and the map has coarse 30° longitudinal bins. Winds, heat redistribution and orbital eccentricity are interpretations subject to model and timing assumptions.", "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 measured signal is combined star-plus-planet flux and depends on correction of an illumination-dependent detector ramp and potential stellar-spot variability. The reported 973 ± 33 K and 1212 ± 11 K are minimum and maximum hemisphere-averaged brightness temperatures at one wavelength, not full three-dimensional atmospheric temperatures. The phase-curve maximum is about 16° before opposition; the separately fitted brightest longitude slice is around 30° east of the substellar point. Latitude structure is assumed, not measured, and the map has coarse 30° longitudinal bins. Winds, heat redistribution and orbital eccentricity are interpretations subject to model and timing assumptions.", "references": [ { "title": "A map of the day–night contrast of the extrasolar planet HD 189733b", "url": "https://www.ucolick.org/~jfortney/papers/Knutson07.pdf", "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:58c1f414-66d5-48d7-a423-f9633c95e387", "version": 1, "content_hash": "sha256:72454d2467ffc3f8fc3eddff53b62b99e0a82e3d44596ab38d00773c5b6bcba4" }, "scientific_correctness_certified": false, "independent_expert_calibration": false, "method": "PROPRIETARY", "points": "160000" }, "canonical_agent_submission": false, "scientific_verification_awarded": false, "reader_guide": null, "reading_status": "SOURCE_LINKED_NOTE" }