{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:36CJ4M27LOXVL5ZV4KNFTLX7IN","short_pith_number":"pith:36CJ4M27","canonical_record":{"source":{"id":"0811.2789","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-11-17T20:53:38Z","cross_cats_sorted":[],"title_canon_sha256":"c72ce92a12d549c888ca1d4250cc06356c6f6070a28e521c2583abdb580a0103","abstract_canon_sha256":"4f324817babcbf10565f1aa1737a02b2c843c4433adb98d942e3731a815d9297"},"schema_version":"1.0"},"canonical_sha256":"df849e335f5baf55f735e29a59aeff4349bc70b60d7610cac686e1773e5f86d4","source":{"kind":"arxiv","id":"0811.2789","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0811.2789","created_at":"2026-07-04T15:34:20Z"},{"alias_kind":"arxiv_version","alias_value":"0811.2789v1","created_at":"2026-07-04T15:34:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0811.2789","created_at":"2026-07-04T15:34:20Z"},{"alias_kind":"pith_short_12","alias_value":"36CJ4M27LOXV","created_at":"2026-07-04T15:34:20Z"},{"alias_kind":"pith_short_16","alias_value":"36CJ4M27LOXVL5ZV","created_at":"2026-07-04T15:34:20Z"},{"alias_kind":"pith_short_8","alias_value":"36CJ4M27","created_at":"2026-07-04T15:34:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:36CJ4M27LOXVL5ZV4KNFTLX7IN","target":"record","payload":{"canonical_record":{"source":{"id":"0811.2789","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-11-17T20:53:38Z","cross_cats_sorted":[],"title_canon_sha256":"c72ce92a12d549c888ca1d4250cc06356c6f6070a28e521c2583abdb580a0103","abstract_canon_sha256":"4f324817babcbf10565f1aa1737a02b2c843c4433adb98d942e3731a815d9297"},"schema_version":"1.0"},"canonical_sha256":"df849e335f5baf55f735e29a59aeff4349bc70b60d7610cac686e1773e5f86d4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:34:20.807051Z","signature_b64":"ZtRdZoPur6UsjCT+ZZ7xSnQzM4hBfxMwFeuKApnKksvl38jGMiBUtaRDRC3xPWUv2/xYyyjj2V2v71I98F0xCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"df849e335f5baf55f735e29a59aeff4349bc70b60d7610cac686e1773e5f86d4","last_reissued_at":"2026-07-04T15:34:20.806634Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:34:20.806634Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0811.2789","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":"2026-07-04T15:34:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UzsUafsG6BZG6Vj/dg5ArtxS2PAbuQXVn9vePtA45ihAJXfsApeYwR/t+EMhNJlLE8x3xJShXvMK3c9yP+zVBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T08:13:42.484888Z"},"content_sha256":"2cbd17d3a1873e8ab6f657e31c43ccc65e1b1c9b769fec504d4427e111f8ae1a","schema_version":"1.0","event_id":"sha256:2cbd17d3a1873e8ab6f657e31c43ccc65e1b1c9b769fec504d4427e111f8ae1a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:36CJ4M27LOXVL5ZV4KNFTLX7IN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Dust-to-Gas Ratio in the Small Magellanic Cloud Tail","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Bolatto, A. Li, B. A. Whitney, B. Babler, B. Shiao, C. Bot, C. W. Engelbracht, E. Muller, F. P. Israel, G. C. Clayton, J. Hora, J.-P. Bernard, J. Th. van Loon, K. A. Misselt, K. D. Gordon, L. J. Smith, M. Block, M. Meade, M. Meixner, M. Sewilo, R. Indebetouw, S. Bracker, S. Madden, W. Reach","submitted_at":"2008-11-17T20:53:38Z","abstract_excerpt":"The Tail region of the Small Magellanic Cloud (SMC) was imaged using the MIPS instrument on the Spitzer Space Telescope as part of the SAGE-SMC Spitzer Legacy. Diffuse infrared emission from dust was detected in all the MIPS bands. The Tail gas-to-dust ratio was measured to be 1200 +/- 350 using the MIPS observations combined with existing IRAS and HI observations. This gas-to-dust ratio is higher than the expected 500-800 from the known Tail metallicity indicating possible destruction of dust grains. Two cluster regions in the Tail were resolved into multiple sources in the MIPS observations "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0811.2789","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0811.2789/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T15:34:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EWSt0uAGavYcTC4hY6wTZ79q2I7jAV8cJkm+Bmp2wH55DF80Dstw7VHX70N8wHxivU55v5RpDP5o7qokT6t2CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T08:13:42.485381Z"},"content_sha256":"9c9c8b6ec382049cf9bbee0f3456ec9b0d7c581d1f831793005c395bca95fb87","schema_version":"1.0","event_id":"sha256:9c9c8b6ec382049cf9bbee0f3456ec9b0d7c581d1f831793005c395bca95fb87"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/36CJ4M27LOXVL5ZV4KNFTLX7IN/bundle.json","state_url":"https://pith.science/pith/36CJ4M27LOXVL5ZV4KNFTLX7IN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/36CJ4M27LOXVL5ZV4KNFTLX7IN/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":"2026-08-04T08:13:42Z","links":{"resolver":"https://pith.science/pith/36CJ4M27LOXVL5ZV4KNFTLX7IN","bundle":"https://pith.science/pith/36CJ4M27LOXVL5ZV4KNFTLX7IN/bundle.json","state":"https://pith.science/pith/36CJ4M27LOXVL5ZV4KNFTLX7IN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/36CJ4M27LOXVL5ZV4KNFTLX7IN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:36CJ4M27LOXVL5ZV4KNFTLX7IN","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":"4f324817babcbf10565f1aa1737a02b2c843c4433adb98d942e3731a815d9297","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-11-17T20:53:38Z","title_canon_sha256":"c72ce92a12d549c888ca1d4250cc06356c6f6070a28e521c2583abdb580a0103"},"schema_version":"1.0","source":{"id":"0811.2789","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0811.2789","created_at":"2026-07-04T15:34:20Z"},{"alias_kind":"arxiv_version","alias_value":"0811.2789v1","created_at":"2026-07-04T15:34:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0811.2789","created_at":"2026-07-04T15:34:20Z"},{"alias_kind":"pith_short_12","alias_value":"36CJ4M27LOXV","created_at":"2026-07-04T15:34:20Z"},{"alias_kind":"pith_short_16","alias_value":"36CJ4M27LOXVL5ZV","created_at":"2026-07-04T15:34:20Z"},{"alias_kind":"pith_short_8","alias_value":"36CJ4M27","created_at":"2026-07-04T15:34:20Z"}],"graph_snapshots":[{"event_id":"sha256:9c9c8b6ec382049cf9bbee0f3456ec9b0d7c581d1f831793005c395bca95fb87","target":"graph","created_at":"2026-07-04T15:34:20Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/0811.2789/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Tail region of the Small Magellanic Cloud (SMC) was imaged using the MIPS instrument on the Spitzer Space Telescope as part of the SAGE-SMC Spitzer Legacy. Diffuse infrared emission from dust was detected in all the MIPS bands. The Tail gas-to-dust ratio was measured to be 1200 +/- 350 using the MIPS observations combined with existing IRAS and HI observations. This gas-to-dust ratio is higher than the expected 500-800 from the known Tail metallicity indicating possible destruction of dust grains. Two cluster regions in the Tail were resolved into multiple sources in the MIPS observations ","authors_text":"A. Bolatto, A. Li, B. A. Whitney, B. Babler, B. Shiao, C. Bot, C. W. Engelbracht, E. Muller, F. P. Israel, G. C. Clayton, J. Hora, J.-P. Bernard, J. Th. van Loon, K. A. Misselt, K. D. Gordon, L. J. Smith, M. Block, M. Meade, M. Meixner, M. Sewilo, R. Indebetouw, S. Bracker, S. Madden, W. Reach","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-11-17T20:53:38Z","title":"The Dust-to-Gas Ratio in the Small Magellanic Cloud Tail"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0811.2789","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":"sha256:2cbd17d3a1873e8ab6f657e31c43ccc65e1b1c9b769fec504d4427e111f8ae1a","target":"record","created_at":"2026-07-04T15:34:20Z","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":"4f324817babcbf10565f1aa1737a02b2c843c4433adb98d942e3731a815d9297","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-11-17T20:53:38Z","title_canon_sha256":"c72ce92a12d549c888ca1d4250cc06356c6f6070a28e521c2583abdb580a0103"},"schema_version":"1.0","source":{"id":"0811.2789","kind":"arxiv","version":1}},"canonical_sha256":"df849e335f5baf55f735e29a59aeff4349bc70b60d7610cac686e1773e5f86d4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"df849e335f5baf55f735e29a59aeff4349bc70b60d7610cac686e1773e5f86d4","first_computed_at":"2026-07-04T15:34:20.806634Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:34:20.806634Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZtRdZoPur6UsjCT+ZZ7xSnQzM4hBfxMwFeuKApnKksvl38jGMiBUtaRDRC3xPWUv2/xYyyjj2V2v71I98F0xCA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:34:20.807051Z","signed_message":"canonical_sha256_bytes"},"source_id":"0811.2789","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2cbd17d3a1873e8ab6f657e31c43ccc65e1b1c9b769fec504d4427e111f8ae1a","sha256:9c9c8b6ec382049cf9bbee0f3456ec9b0d7c581d1f831793005c395bca95fb87"],"state_sha256":"0c02f4bc4f9d5fe344f22f0b56ed42c21f2fe61fa3e73707b9c51fca1787df79"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IHPOoLQlzxW5rnzJ1Q1nRf5QFszEVhkd+J/9Fc3MOVBUhosp1YulxKg07BvoeO/UFXn7aJ5nSN6Txy7GkYrjBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T08:13:42.498891Z","bundle_sha256":"65a0322c8502dbfc52e059406c27e56157bdd45228bfdaa875cd007637c06f9c"}}