{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:BJ4F7C6Q2JJ4BOSJK5DTVTHALU","short_pith_number":"pith:BJ4F7C6Q","canonical_record":{"source":{"id":"0907.4884","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-07-28T10:38:57Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"c7147e526c5a7b1590095094037c69e13d86162784c021a365c23d5897d70935","abstract_canon_sha256":"18c7a0a6e33e8f685d73af991e7c3172ebac67afe478dd27d49fc5a64ee79506"},"schema_version":"1.0"},"canonical_sha256":"0a785f8bd0d253c0ba4957473acce05d3c610e5a0c1ddd6714e96661d312ac5a","source":{"kind":"arxiv","id":"0907.4884","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0907.4884","created_at":"2026-05-18T02:12:47Z"},{"alias_kind":"arxiv_version","alias_value":"0907.4884v1","created_at":"2026-05-18T02:12:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0907.4884","created_at":"2026-05-18T02:12:47Z"},{"alias_kind":"pith_short_12","alias_value":"BJ4F7C6Q2JJ4","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"BJ4F7C6Q2JJ4BOSJ","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"BJ4F7C6Q","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:BJ4F7C6Q2JJ4BOSJK5DTVTHALU","target":"record","payload":{"canonical_record":{"source":{"id":"0907.4884","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-07-28T10:38:57Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"c7147e526c5a7b1590095094037c69e13d86162784c021a365c23d5897d70935","abstract_canon_sha256":"18c7a0a6e33e8f685d73af991e7c3172ebac67afe478dd27d49fc5a64ee79506"},"schema_version":"1.0"},"canonical_sha256":"0a785f8bd0d253c0ba4957473acce05d3c610e5a0c1ddd6714e96661d312ac5a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:12:47.134279Z","signature_b64":"xa5e3s3ugDXCTJC3bMe12N//Ic0LMJB2DhucHK/y5D/kowSawpkgbsv/ze5hAcJgNGE9PSQfjv/NIaJJ4LeQCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0a785f8bd0d253c0ba4957473acce05d3c610e5a0c1ddd6714e96661d312ac5a","last_reissued_at":"2026-05-18T02:12:47.133672Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:12:47.133672Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0907.4884","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":"2026-05-18T02:12:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+BD0Q/wot9Dh04CDYxVKyLst6kTAxC/D9iuKhjCkeLAM+EMQ7Bp9E1x9KknDOwut3m0xtKtJtSossuYsJ9XZAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T15:45:04.648184Z"},"content_sha256":"13ecb93e9c5160180a6c6976eddd5342ede61f5329c914e852fc7b35ad43a750","schema_version":"1.0","event_id":"sha256:13ecb93e9c5160180a6c6976eddd5342ede61f5329c914e852fc7b35ad43a750"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:BJ4F7C6Q2JJ4BOSJK5DTVTHALU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unveiling the nature of M94's (NGC4736) outer region: a panchromatic perspective","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"David Martinez-Delgado, Ignacio Trujillo, Inma Martinez-Valpuesta, Jorge Penarrubia, Michael Pohlen, R. Jay Gabany","submitted_at":"2009-07-28T10:38:57Z","abstract_excerpt":"We have conducted a deep multi-wavelength analysis (0.15-160 mum) to study the outer region of the nearby galaxy M94. We show that the non-optical data support the idea that the outskirts of this galaxy is not formed by a closed stellar ring (as traditionally claimed in the literature) but by a spiral arm structure. In this sense, M94 is a good example of a Type III (anti-truncated) disk galaxy having a very bright outer disk. The outer disk of this galaxy contains ~23% of the total stellar mass budget of the galaxy and contributes ~10% of the new stars created showing that this region of the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0907.4884","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":"2026-05-18T02:12:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kRJ14MT2d0z4GjBCxljshT6up4xttoa/WAIxHVAG8TqEvMEXVH8HKihueQkbTL+OUrVtcxRB360m8kT/TdlDDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T15:45:04.649001Z"},"content_sha256":"b0da4948b9a79c583431d271a4da2775b9bb290ff315f23e9a81e56b88d56f7f","schema_version":"1.0","event_id":"sha256:b0da4948b9a79c583431d271a4da2775b9bb290ff315f23e9a81e56b88d56f7f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BJ4F7C6Q2JJ4BOSJK5DTVTHALU/bundle.json","state_url":"https://pith.science/pith/BJ4F7C6Q2JJ4BOSJK5DTVTHALU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BJ4F7C6Q2JJ4BOSJK5DTVTHALU/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":"2026-05-31T15:45:04Z","links":{"resolver":"https://pith.science/pith/BJ4F7C6Q2JJ4BOSJK5DTVTHALU","bundle":"https://pith.science/pith/BJ4F7C6Q2JJ4BOSJK5DTVTHALU/bundle.json","state":"https://pith.science/pith/BJ4F7C6Q2JJ4BOSJK5DTVTHALU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BJ4F7C6Q2JJ4BOSJK5DTVTHALU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:BJ4F7C6Q2JJ4BOSJK5DTVTHALU","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":"18c7a0a6e33e8f685d73af991e7c3172ebac67afe478dd27d49fc5a64ee79506","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-07-28T10:38:57Z","title_canon_sha256":"c7147e526c5a7b1590095094037c69e13d86162784c021a365c23d5897d70935"},"schema_version":"1.0","source":{"id":"0907.4884","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0907.4884","created_at":"2026-05-18T02:12:47Z"},{"alias_kind":"arxiv_version","alias_value":"0907.4884v1","created_at":"2026-05-18T02:12:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0907.4884","created_at":"2026-05-18T02:12:47Z"},{"alias_kind":"pith_short_12","alias_value":"BJ4F7C6Q2JJ4","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"BJ4F7C6Q2JJ4BOSJ","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"BJ4F7C6Q","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:b0da4948b9a79c583431d271a4da2775b9bb290ff315f23e9a81e56b88d56f7f","target":"graph","created_at":"2026-05-18T02:12:47Z","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 have conducted a deep multi-wavelength analysis (0.15-160 mum) to study the outer region of the nearby galaxy M94. We show that the non-optical data support the idea that the outskirts of this galaxy is not formed by a closed stellar ring (as traditionally claimed in the literature) but by a spiral arm structure. In this sense, M94 is a good example of a Type III (anti-truncated) disk galaxy having a very bright outer disk. The outer disk of this galaxy contains ~23% of the total stellar mass budget of the galaxy and contributes ~10% of the new stars created showing that this region of the ","authors_text":"David Martinez-Delgado, Ignacio Trujillo, Inma Martinez-Valpuesta, Jorge Penarrubia, Michael Pohlen, R. Jay Gabany","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-07-28T10:38:57Z","title":"Unveiling the nature of M94's (NGC4736) outer region: a panchromatic perspective"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0907.4884","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":"sha256:13ecb93e9c5160180a6c6976eddd5342ede61f5329c914e852fc7b35ad43a750","target":"record","created_at":"2026-05-18T02:12:47Z","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":"18c7a0a6e33e8f685d73af991e7c3172ebac67afe478dd27d49fc5a64ee79506","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-07-28T10:38:57Z","title_canon_sha256":"c7147e526c5a7b1590095094037c69e13d86162784c021a365c23d5897d70935"},"schema_version":"1.0","source":{"id":"0907.4884","kind":"arxiv","version":1}},"canonical_sha256":"0a785f8bd0d253c0ba4957473acce05d3c610e5a0c1ddd6714e96661d312ac5a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0a785f8bd0d253c0ba4957473acce05d3c610e5a0c1ddd6714e96661d312ac5a","first_computed_at":"2026-05-18T02:12:47.133672Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:12:47.133672Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xa5e3s3ugDXCTJC3bMe12N//Ic0LMJB2DhucHK/y5D/kowSawpkgbsv/ze5hAcJgNGE9PSQfjv/NIaJJ4LeQCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:12:47.134279Z","signed_message":"canonical_sha256_bytes"},"source_id":"0907.4884","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:13ecb93e9c5160180a6c6976eddd5342ede61f5329c914e852fc7b35ad43a750","sha256:b0da4948b9a79c583431d271a4da2775b9bb290ff315f23e9a81e56b88d56f7f"],"state_sha256":"4580a418b9a7b3a6550cb0b8f72cfe28237cbcc39d68e3e10336d2347a842cce"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2sTNfMXU8vk0j89MXdkAntqVUcGQ+NuIDnu0ZIjwal/r9CYk8HIYfIXIdrSImBtmcnQXMWWbpd6TYcYu6as7CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T15:45:04.653564Z","bundle_sha256":"7bc10525193db52141ea6cd07f429289d024a34d432e9e2b45a07f754ce4378b"}}