{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:WJM7FKICX3KDUJYLYCXZOYRGPE","short_pith_number":"pith:WJM7FKIC","canonical_record":{"source":{"id":"1505.02981","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-05-12T12:35:58Z","cross_cats_sorted":[],"title_canon_sha256":"e7d5a6276b696ece742441af507c29d1cc05ddb9c4f74a144bf73b19f05e151b","abstract_canon_sha256":"a5627033e43d9c11efea2068848adcd42fc1386dc14dd5626bc562bae8e859db"},"schema_version":"1.0"},"canonical_sha256":"b259f2a902bed43a270bc0af976226790ac673f20d372f63a7900ddeffba3cb0","source":{"kind":"arxiv","id":"1505.02981","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.02981","created_at":"2026-05-18T01:04:50Z"},{"alias_kind":"arxiv_version","alias_value":"1505.02981v1","created_at":"2026-05-18T01:04:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.02981","created_at":"2026-05-18T01:04:50Z"},{"alias_kind":"pith_short_12","alias_value":"WJM7FKICX3KD","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"WJM7FKICX3KDUJYL","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"WJM7FKIC","created_at":"2026-05-18T12:29:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:WJM7FKICX3KDUJYLYCXZOYRGPE","target":"record","payload":{"canonical_record":{"source":{"id":"1505.02981","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-05-12T12:35:58Z","cross_cats_sorted":[],"title_canon_sha256":"e7d5a6276b696ece742441af507c29d1cc05ddb9c4f74a144bf73b19f05e151b","abstract_canon_sha256":"a5627033e43d9c11efea2068848adcd42fc1386dc14dd5626bc562bae8e859db"},"schema_version":"1.0"},"canonical_sha256":"b259f2a902bed43a270bc0af976226790ac673f20d372f63a7900ddeffba3cb0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:04:50.593400Z","signature_b64":"SxOTc5JZ7Gb/4EM4RmnCxmwBOpH2B47MepRVJDgl/NRTTQX70EA5plyRGy9tc5qXxnDJm1o6EKDasxicjX/CCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b259f2a902bed43a270bc0af976226790ac673f20d372f63a7900ddeffba3cb0","last_reissued_at":"2026-05-18T01:04:50.592945Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:04:50.592945Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.02981","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:04:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"y6A7n6exFddb36Gd6E04M8Lpz10qGRNOkcoTKQDoK7cAlNwgfbpxp+2ZzgyhJiXSSHnYV6QJ8A0IM7QaW9rADA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:41:31.633499Z"},"content_sha256":"636f6cafeb410eb0dd12cfe49cf26a6d6fd3490d5f37c497175224447a912c64","schema_version":"1.0","event_id":"sha256:636f6cafeb410eb0dd12cfe49cf26a6d6fd3490d5f37c497175224447a912c64"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:WJM7FKICX3KDUJYLYCXZOYRGPE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Star formation in the outer regions of the early type galaxy NGC 4203","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Emin Karabal, Jean-Charles Cuillandre, Mustafa K. Y{\\i}ld{\\i}z, Paolo Serra, Pierre-Alain Duc, Raffaella Morganti, Reynier F. Peletier, Tom A. Oosterloo","submitted_at":"2015-05-12T12:35:58Z","abstract_excerpt":"NGC 4203 is a nearby early-type galaxy surrounded by a very large, low-column-density HI disc. In this paper we study the star formation efficiency in the gas disc of NGC 4203 by using the UV, deep optical imaging and infrared data. We confirm that the HI disc consists of two distinct components: an inner star forming ring with radius from $\\sim$ 1 to $\\sim$ 3 R$_{eff}$, and an outer disc. The outer HI disc is 9 times more massive than the inner HI ring. At the location of the inner HI ring we detect spiral-like structure both in the deep $g'-r'$ image and in the 8 $\\mu$m $Spitzer$-IRAC image,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.02981","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:04:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P2ux5yWaIdy+ds/Xy5L+Nkpj/m0raUtUeTv8fzuDsBK7oMlIle6hortSe3zEhUx6bQQZqDPmbdRphtlDlE/NCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:41:31.634225Z"},"content_sha256":"4f71f90b00e8291e7aadea7363322b6c2ad9f3083de38b3ddb86cca5454fb676","schema_version":"1.0","event_id":"sha256:4f71f90b00e8291e7aadea7363322b6c2ad9f3083de38b3ddb86cca5454fb676"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WJM7FKICX3KDUJYLYCXZOYRGPE/bundle.json","state_url":"https://pith.science/pith/WJM7FKICX3KDUJYLYCXZOYRGPE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WJM7FKICX3KDUJYLYCXZOYRGPE/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-25T17:41:31Z","links":{"resolver":"https://pith.science/pith/WJM7FKICX3KDUJYLYCXZOYRGPE","bundle":"https://pith.science/pith/WJM7FKICX3KDUJYLYCXZOYRGPE/bundle.json","state":"https://pith.science/pith/WJM7FKICX3KDUJYLYCXZOYRGPE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WJM7FKICX3KDUJYLYCXZOYRGPE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:WJM7FKICX3KDUJYLYCXZOYRGPE","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":"a5627033e43d9c11efea2068848adcd42fc1386dc14dd5626bc562bae8e859db","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-05-12T12:35:58Z","title_canon_sha256":"e7d5a6276b696ece742441af507c29d1cc05ddb9c4f74a144bf73b19f05e151b"},"schema_version":"1.0","source":{"id":"1505.02981","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.02981","created_at":"2026-05-18T01:04:50Z"},{"alias_kind":"arxiv_version","alias_value":"1505.02981v1","created_at":"2026-05-18T01:04:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.02981","created_at":"2026-05-18T01:04:50Z"},{"alias_kind":"pith_short_12","alias_value":"WJM7FKICX3KD","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"WJM7FKICX3KDUJYL","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"WJM7FKIC","created_at":"2026-05-18T12:29:47Z"}],"graph_snapshots":[{"event_id":"sha256:4f71f90b00e8291e7aadea7363322b6c2ad9f3083de38b3ddb86cca5454fb676","target":"graph","created_at":"2026-05-18T01:04:50Z","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":"NGC 4203 is a nearby early-type galaxy surrounded by a very large, low-column-density HI disc. In this paper we study the star formation efficiency in the gas disc of NGC 4203 by using the UV, deep optical imaging and infrared data. We confirm that the HI disc consists of two distinct components: an inner star forming ring with radius from $\\sim$ 1 to $\\sim$ 3 R$_{eff}$, and an outer disc. The outer HI disc is 9 times more massive than the inner HI ring. At the location of the inner HI ring we detect spiral-like structure both in the deep $g'-r'$ image and in the 8 $\\mu$m $Spitzer$-IRAC image,","authors_text":"Emin Karabal, Jean-Charles Cuillandre, Mustafa K. Y{\\i}ld{\\i}z, Paolo Serra, Pierre-Alain Duc, Raffaella Morganti, Reynier F. Peletier, Tom A. Oosterloo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-05-12T12:35:58Z","title":"Star formation in the outer regions of the early type galaxy NGC 4203"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.02981","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":"sha256:636f6cafeb410eb0dd12cfe49cf26a6d6fd3490d5f37c497175224447a912c64","target":"record","created_at":"2026-05-18T01:04:50Z","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":"a5627033e43d9c11efea2068848adcd42fc1386dc14dd5626bc562bae8e859db","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-05-12T12:35:58Z","title_canon_sha256":"e7d5a6276b696ece742441af507c29d1cc05ddb9c4f74a144bf73b19f05e151b"},"schema_version":"1.0","source":{"id":"1505.02981","kind":"arxiv","version":1}},"canonical_sha256":"b259f2a902bed43a270bc0af976226790ac673f20d372f63a7900ddeffba3cb0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b259f2a902bed43a270bc0af976226790ac673f20d372f63a7900ddeffba3cb0","first_computed_at":"2026-05-18T01:04:50.592945Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:04:50.592945Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SxOTc5JZ7Gb/4EM4RmnCxmwBOpH2B47MepRVJDgl/NRTTQX70EA5plyRGy9tc5qXxnDJm1o6EKDasxicjX/CCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:04:50.593400Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.02981","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:636f6cafeb410eb0dd12cfe49cf26a6d6fd3490d5f37c497175224447a912c64","sha256:4f71f90b00e8291e7aadea7363322b6c2ad9f3083de38b3ddb86cca5454fb676"],"state_sha256":"7d95e5b6adc0a9ade3e6b4a062c0faea1c15e873296c1a99fa9a25253ee65405"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kBnAy883gLG9c4WogMYtzb5WD/+4/KauPYeaISGXaii0tEaTGPUcaEjjzdgoAryLrEI1ri1Uf28R7fAsGgXnAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T17:41:31.638240Z","bundle_sha256":"cd6d605deff4220cedcaa1e4575b7e7ad23f5838e361945151c98e4119f5ff75"}}