{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:5UB5EHPVYTKVDEY4N3UL4OJILR","short_pith_number":"pith:5UB5EHPV","canonical_record":{"source":{"id":"astro-ph/0406064","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-06-02T16:49:29Z","cross_cats_sorted":[],"title_canon_sha256":"1021620a2f0e5ac95d675e4395173aaee7dd0c0fb76a03b077f9ae5eccd2c089","abstract_canon_sha256":"db3c116ccc5f4b1530e083a2d0305df8d1436b2057a2539147e6d7c21af49b36"},"schema_version":"1.0"},"canonical_sha256":"ed03d21df5c4d551931c6ee8be39285c77ed01a3dbd675c9bc580a714d32f30b","source":{"kind":"arxiv","id":"astro-ph/0406064","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0406064","created_at":"2026-05-18T03:47:43Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0406064v1","created_at":"2026-05-18T03:47:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0406064","created_at":"2026-05-18T03:47:43Z"},{"alias_kind":"pith_short_12","alias_value":"5UB5EHPVYTKV","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"5UB5EHPVYTKVDEY4","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"5UB5EHPV","created_at":"2026-05-18T12:25:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:5UB5EHPVYTKVDEY4N3UL4OJILR","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0406064","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-06-02T16:49:29Z","cross_cats_sorted":[],"title_canon_sha256":"1021620a2f0e5ac95d675e4395173aaee7dd0c0fb76a03b077f9ae5eccd2c089","abstract_canon_sha256":"db3c116ccc5f4b1530e083a2d0305df8d1436b2057a2539147e6d7c21af49b36"},"schema_version":"1.0"},"canonical_sha256":"ed03d21df5c4d551931c6ee8be39285c77ed01a3dbd675c9bc580a714d32f30b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:47:43.686973Z","signature_b64":"GibMQYpSl0MNwkGHJz8BUGaCsZ9OWQQLlu6IzODPPX2Lm6eqKRwKLSmy6PNEWgHMelqt0FNzVJJ1jScFzyDUAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ed03d21df5c4d551931c6ee8be39285c77ed01a3dbd675c9bc580a714d32f30b","last_reissued_at":"2026-05-18T03:47:43.683245Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:47:43.683245Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0406064","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":"2026-05-18T03:47:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m+dfmqWMm0iJQkK7tcztpQbwvxTOk7y+fsdwcGXuiiI74A1YApq7IrsEhcbAnXSFhatafce/Nzkmwol88fxsDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T21:39:23.073414Z"},"content_sha256":"ade7b23835ab25340661be1f54e763929487ff1fc8d7d6414f0e3247220e1d6d","schema_version":"1.0","event_id":"sha256:ade7b23835ab25340661be1f54e763929487ff1fc8d7d6414f0e3247220e1d6d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:5UB5EHPVYTKVDEY4N3UL4OJILR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spatially Resolved Ultraviolet, H-alpha, Infrared, and Radio Star Formation in M81","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Alonso-Herrero, B. T. Draine, C. W. Engelbracht, D. A. Dale, D. Calzetti, D. C. Hines, D. M. Kelly, D. T. Frayer, E. J. Murphy, & E. T. Young, F. Walter, G. Helou, G. H. Rieke, G. J. Bendo, J. A. Stansberry, J.-D. T. Smith, J. E. Morrison, J. L. Hinz, J. Muzerolle, Jr., K. A. Misselt, K. D. Gordon, K. Y. L. Su, L. J. Storrie-Lombardi, M. D. Thornley, M. W. Regan, P. G. Perez-Gonzalez, P. N. Appleton, R. C. Kennicutt, S. R. Stolovy","submitted_at":"2004-06-02T16:49:29Z","abstract_excerpt":"We present Multiband Imaging Photometer for Spitzer (MIPS) observations of M81 at 24, 70, and 160 micron. The grand design nature of M81 is clearly seen, showing two well resolved spiral arms containing numerous bright star forming regions. The MIPS images reveal a significant amount of cold dust associated with the spiral arms. We investigate the variation of the ultraviolet (UV), H-alpha, and infrared (IR) luminosities and star formation rate (SFR) indicators across the face of M81 using the MIPS images and archival UV and H-alpha images. For regions in M81, we find that UV and H-alpha SFRs "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0406064","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":"2026-05-18T03:47:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z2v+l35tXw5V5m0NmJAr2RkXL8yvucUKMCgZkeIVkur9LtlgBhb/JouNoPrLfDkoyhcBmqV6CtQUyEw8KqT9AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T21:39:23.074095Z"},"content_sha256":"b64473d19cabce02791c19b13e82b3b4024780ba5dccd644508d10480b6f5bd2","schema_version":"1.0","event_id":"sha256:b64473d19cabce02791c19b13e82b3b4024780ba5dccd644508d10480b6f5bd2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5UB5EHPVYTKVDEY4N3UL4OJILR/bundle.json","state_url":"https://pith.science/pith/5UB5EHPVYTKVDEY4N3UL4OJILR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5UB5EHPVYTKVDEY4N3UL4OJILR/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":"2026-06-06T21:39:23Z","links":{"resolver":"https://pith.science/pith/5UB5EHPVYTKVDEY4N3UL4OJILR","bundle":"https://pith.science/pith/5UB5EHPVYTKVDEY4N3UL4OJILR/bundle.json","state":"https://pith.science/pith/5UB5EHPVYTKVDEY4N3UL4OJILR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5UB5EHPVYTKVDEY4N3UL4OJILR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:5UB5EHPVYTKVDEY4N3UL4OJILR","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":"db3c116ccc5f4b1530e083a2d0305df8d1436b2057a2539147e6d7c21af49b36","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-06-02T16:49:29Z","title_canon_sha256":"1021620a2f0e5ac95d675e4395173aaee7dd0c0fb76a03b077f9ae5eccd2c089"},"schema_version":"1.0","source":{"id":"astro-ph/0406064","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0406064","created_at":"2026-05-18T03:47:43Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0406064v1","created_at":"2026-05-18T03:47:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0406064","created_at":"2026-05-18T03:47:43Z"},{"alias_kind":"pith_short_12","alias_value":"5UB5EHPVYTKV","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"5UB5EHPVYTKVDEY4","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"5UB5EHPV","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:b64473d19cabce02791c19b13e82b3b4024780ba5dccd644508d10480b6f5bd2","target":"graph","created_at":"2026-05-18T03:47:43Z","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 Multiband Imaging Photometer for Spitzer (MIPS) observations of M81 at 24, 70, and 160 micron. The grand design nature of M81 is clearly seen, showing two well resolved spiral arms containing numerous bright star forming regions. The MIPS images reveal a significant amount of cold dust associated with the spiral arms. We investigate the variation of the ultraviolet (UV), H-alpha, and infrared (IR) luminosities and star formation rate (SFR) indicators across the face of M81 using the MIPS images and archival UV and H-alpha images. For regions in M81, we find that UV and H-alpha SFRs ","authors_text":"A. Alonso-Herrero, B. T. Draine, C. W. Engelbracht, D. A. Dale, D. Calzetti, D. C. Hines, D. M. Kelly, D. T. Frayer, E. J. Murphy, & E. T. Young, F. Walter, G. Helou, G. H. Rieke, G. J. Bendo, J. A. Stansberry, J.-D. T. Smith, J. E. Morrison, J. L. Hinz, J. Muzerolle, Jr., K. A. Misselt, K. D. Gordon, K. Y. L. Su, L. J. Storrie-Lombardi, M. D. Thornley, M. W. Regan, P. G. Perez-Gonzalez, P. N. Appleton, R. C. Kennicutt, S. R. Stolovy","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-06-02T16:49:29Z","title":"Spatially Resolved Ultraviolet, H-alpha, Infrared, and Radio Star Formation in M81"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0406064","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:ade7b23835ab25340661be1f54e763929487ff1fc8d7d6414f0e3247220e1d6d","target":"record","created_at":"2026-05-18T03:47:43Z","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":"db3c116ccc5f4b1530e083a2d0305df8d1436b2057a2539147e6d7c21af49b36","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-06-02T16:49:29Z","title_canon_sha256":"1021620a2f0e5ac95d675e4395173aaee7dd0c0fb76a03b077f9ae5eccd2c089"},"schema_version":"1.0","source":{"id":"astro-ph/0406064","kind":"arxiv","version":1}},"canonical_sha256":"ed03d21df5c4d551931c6ee8be39285c77ed01a3dbd675c9bc580a714d32f30b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ed03d21df5c4d551931c6ee8be39285c77ed01a3dbd675c9bc580a714d32f30b","first_computed_at":"2026-05-18T03:47:43.683245Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:47:43.683245Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GibMQYpSl0MNwkGHJz8BUGaCsZ9OWQQLlu6IzODPPX2Lm6eqKRwKLSmy6PNEWgHMelqt0FNzVJJ1jScFzyDUAw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:47:43.686973Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0406064","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ade7b23835ab25340661be1f54e763929487ff1fc8d7d6414f0e3247220e1d6d","sha256:b64473d19cabce02791c19b13e82b3b4024780ba5dccd644508d10480b6f5bd2"],"state_sha256":"e6dd0c0c5e011738569383ff3f09f228a2ee62c0903b60e15970a87f359ac10d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CrpcL35L7qpnniqxXpC6s6omp3mw4mUNh9LIVyTbzMnwUhaJCCiGnpXqNI3OYIotOu2ReEXUOZPspzr7aZbkCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T21:39:23.077336Z","bundle_sha256":"c97bcc5f3a0b5d885d13dfc97c18d48b9836edfb8249b38169a4c56dbb34e586"}}