{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:QJHDICTWSBA7OV45GDFVWV7ZGR","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"e85af93656e840cb83854648a517ba93e75b249a272fdccbf6deae74d2971d01","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-04-10T20:08:32Z","title_canon_sha256":"6ef2adf7a5339c7fb15ec15dbfea3eb411462f2f1b305096fe2fc9b352ef5d7a"},"schema_version":"1.0","source":{"id":"astro-ph/0204182","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0204182","created_at":"2026-05-18T04:23:01Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0204182v1","created_at":"2026-05-18T04:23:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0204182","created_at":"2026-05-18T04:23:01Z"},{"alias_kind":"pith_short_12","alias_value":"QJHDICTWSBA7","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"QJHDICTWSBA7OV45","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"QJHDICTW","created_at":"2026-05-18T12:25:51Z"}],"graph_snapshots":[{"event_id":"sha256:d1c94e097f05e8a64d7a6e8601d71aee86796f7dcb372ead2d4a65fb55cebc79","target":"graph","created_at":"2026-05-18T04:23:01Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We present a two-dimensional (2-D) fitting algorithm (GALFIT) designed to extract structural components from galaxy images, with emphasis on closely modeling light profiles of spatially well-resolved, nearby galaxies observed with the Hubble Space Telescope. Our algorithm improves on previous techniques in two areas, by being able to simultaneously fit a galaxy with an arbitrary number of components, and with optimization in computation speed, suited for working on large galaxy images. We use 2-D models such as the ``Nuker'' law, the Sersic (de Vaucouleurs) profile, an exponential disk, and Ga","authors_text":"(2) The Carnegie Observatories of Washington, (3) MPIA Heidelberg), Chien Y. Peng (1), Chris D. Impey (1), Hans-Walter Rix (3) ((1) Steward Observatory, Luis C. Ho (2)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2002-04-10T20:08:32Z","title":"Detailed Structural Decomposition of Galaxy Images"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0204182","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:be8837fe1d3998f227e0b55841e27e635e7167a017356f8d5d760fcdd6133921","target":"record","created_at":"2026-05-18T04:23:01Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"e85af93656e840cb83854648a517ba93e75b249a272fdccbf6deae74d2971d01","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-04-10T20:08:32Z","title_canon_sha256":"6ef2adf7a5339c7fb15ec15dbfea3eb411462f2f1b305096fe2fc9b352ef5d7a"},"schema_version":"1.0","source":{"id":"astro-ph/0204182","kind":"arxiv","version":1}},"canonical_sha256":"824e340a769041f7579d30cb5b57f93447416b306d177c8a4c632a57183ebdf2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"824e340a769041f7579d30cb5b57f93447416b306d177c8a4c632a57183ebdf2","first_computed_at":"2026-05-18T04:23:01.207762Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:23:01.207762Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"p23VwdFez/yhtFZbfggolPjnLP22rWPbTXuGsAeJHfiZgX27MW+vlMEsCsYm0uL3vlJSqGTeCsLY/skB81lHBg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:23:01.208409Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0204182","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:be8837fe1d3998f227e0b55841e27e635e7167a017356f8d5d760fcdd6133921","sha256:d1c94e097f05e8a64d7a6e8601d71aee86796f7dcb372ead2d4a65fb55cebc79"],"state_sha256":"8df0de0b5d02ede0b10dfecf1421c79d1fd4a60a1a9623d0e31b39ee1c47e4fa"}