{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:GBLHXGEEANYYD3JZC747CQQNSY","short_pith_number":"pith:GBLHXGEE","canonical_record":{"source":{"id":"1712.06233","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-12-18T02:58:03Z","cross_cats_sorted":[],"title_canon_sha256":"854f90c0fc2978c82136ebbe32cb5ab4fd5b80022af87c7a6dc975111377cb00","abstract_canon_sha256":"284877aa475996986454f67c3c36564c11523f05dc0c701a1fea148bf512430c"},"schema_version":"1.0"},"canonical_sha256":"30567b9884037181ed3917f9f1420d962e2c7268b2f58f4e77e57dc636c01bed","source":{"kind":"arxiv","id":"1712.06233","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.06233","created_at":"2026-05-18T00:24:47Z"},{"alias_kind":"arxiv_version","alias_value":"1712.06233v1","created_at":"2026-05-18T00:24:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.06233","created_at":"2026-05-18T00:24:47Z"},{"alias_kind":"pith_short_12","alias_value":"GBLHXGEEANYY","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"GBLHXGEEANYYD3JZ","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"GBLHXGEE","created_at":"2026-05-18T12:31:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:GBLHXGEEANYYD3JZC747CQQNSY","target":"record","payload":{"canonical_record":{"source":{"id":"1712.06233","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-12-18T02:58:03Z","cross_cats_sorted":[],"title_canon_sha256":"854f90c0fc2978c82136ebbe32cb5ab4fd5b80022af87c7a6dc975111377cb00","abstract_canon_sha256":"284877aa475996986454f67c3c36564c11523f05dc0c701a1fea148bf512430c"},"schema_version":"1.0"},"canonical_sha256":"30567b9884037181ed3917f9f1420d962e2c7268b2f58f4e77e57dc636c01bed","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:24:47.426605Z","signature_b64":"eAA6rP1LL5eTK5MqLwwJ2XB2pgBUgQERAdACFTaN4ejKTAKeFG4WdzjlheIiI211kklKjEZom294jlV2Jv/UCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"30567b9884037181ed3917f9f1420d962e2c7268b2f58f4e77e57dc636c01bed","last_reissued_at":"2026-05-18T00:24:47.425880Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:24:47.425880Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1712.06233","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":"2026-05-18T00:24:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lI4sIOfdyCLcbogaVEBmHeYTBKVApWIeZMwxWMdeMaabXlEFI0g5MtlZbFsCi6EAg1b8cA1oRMUzmM/wiYHyDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T12:49:21.252874Z"},"content_sha256":"592f3824c7ada37de4cbf66e92835e27335704fb36e96a366b6955b454ad8230","schema_version":"1.0","event_id":"sha256:592f3824c7ada37de4cbf66e92835e27335704fb36e96a366b6955b454ad8230"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:GBLHXGEEANYYD3JZC747CQQNSY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spatially Resolved Dust, Gas, and Star Formation in the Dwarf Magellanic Irregular NGC4449","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"(10) Smith College), (2) Princeton University, (3) Institut d'Astrophysique de Paris, (4) University of Virginia, (5) Instituto Nacional de Astrofisica, (6) University of Arizona, (7) Yale University, (8) Stockholm University, 9), (9) National Radio Astronomy Observatory, A. Battisti (1), A. Kirkpatrick (7), Amherst, A.S. Evans (4, B.T. Draine (2), D. Calzetti (1), D. Rosa Gonzalez (5), D. Sanchez-Arguelles (5) ((1) University of Massachusetts, G. Oestlin (8), G.W. Wilson (1), H. Roussel (3), J.E. Andrews (6), J. Lowenthal (10), J. Puschnig (8), K.E. Johnson (4), K. Grasha (1), M.H. Heyer (1), M. Yun (1), Optica, O. Vega (5), W.F. Wall (5), y Electronica, Y. Tang (1)","submitted_at":"2017-12-18T02:58:03Z","abstract_excerpt":"We investigate the relation between gas and star formation in sub-galactic regions, ~360 pc to ~1.5 kpc in size, within the nearby starburst dwarf NGC4449, in order to separate the underlying relation from the effects of sampling at varying spatial scales. Dust and gas mass surface densities are derived by combining new observations at 1.1 mm, obtained with the AzTEC instrument on the Large Millimeter Telescope, with archival infrared images in the range 8-500 micron from the Spitzer Space Telescope and the Herschel Space Observatory. We extend the dynamic range of our mm (and dust) maps at th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.06233","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":"2026-05-18T00:24:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KSu3k6eKGrMz/UbgYwfozViJWurb83040RY8r5eFKp26gTvgYTsJJ+QyCnvhNrgejEqhE34mmXKu8QoUanUqDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T12:49:21.253383Z"},"content_sha256":"d0c4abbb068d0abab96f0c39205f6cd20c991f6a1343a910ce536d2f35f61db4","schema_version":"1.0","event_id":"sha256:d0c4abbb068d0abab96f0c39205f6cd20c991f6a1343a910ce536d2f35f61db4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GBLHXGEEANYYD3JZC747CQQNSY/bundle.json","state_url":"https://pith.science/pith/GBLHXGEEANYYD3JZC747CQQNSY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GBLHXGEEANYYD3JZC747CQQNSY/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":"2026-05-31T12:49:21Z","links":{"resolver":"https://pith.science/pith/GBLHXGEEANYYD3JZC747CQQNSY","bundle":"https://pith.science/pith/GBLHXGEEANYYD3JZC747CQQNSY/bundle.json","state":"https://pith.science/pith/GBLHXGEEANYYD3JZC747CQQNSY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GBLHXGEEANYYD3JZC747CQQNSY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:GBLHXGEEANYYD3JZC747CQQNSY","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":"284877aa475996986454f67c3c36564c11523f05dc0c701a1fea148bf512430c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-12-18T02:58:03Z","title_canon_sha256":"854f90c0fc2978c82136ebbe32cb5ab4fd5b80022af87c7a6dc975111377cb00"},"schema_version":"1.0","source":{"id":"1712.06233","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.06233","created_at":"2026-05-18T00:24:47Z"},{"alias_kind":"arxiv_version","alias_value":"1712.06233v1","created_at":"2026-05-18T00:24:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.06233","created_at":"2026-05-18T00:24:47Z"},{"alias_kind":"pith_short_12","alias_value":"GBLHXGEEANYY","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"GBLHXGEEANYYD3JZ","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"GBLHXGEE","created_at":"2026-05-18T12:31:15Z"}],"graph_snapshots":[{"event_id":"sha256:d0c4abbb068d0abab96f0c39205f6cd20c991f6a1343a910ce536d2f35f61db4","target":"graph","created_at":"2026-05-18T00:24:47Z","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 investigate the relation between gas and star formation in sub-galactic regions, ~360 pc to ~1.5 kpc in size, within the nearby starburst dwarf NGC4449, in order to separate the underlying relation from the effects of sampling at varying spatial scales. Dust and gas mass surface densities are derived by combining new observations at 1.1 mm, obtained with the AzTEC instrument on the Large Millimeter Telescope, with archival infrared images in the range 8-500 micron from the Spitzer Space Telescope and the Herschel Space Observatory. We extend the dynamic range of our mm (and dust) maps at th","authors_text":"(10) Smith College), (2) Princeton University, (3) Institut d'Astrophysique de Paris, (4) University of Virginia, (5) Instituto Nacional de Astrofisica, (6) University of Arizona, (7) Yale University, (8) Stockholm University, 9), (9) National Radio Astronomy Observatory, A. Battisti (1), A. Kirkpatrick (7), Amherst, A.S. Evans (4, B.T. Draine (2), D. Calzetti (1), D. Rosa Gonzalez (5), D. Sanchez-Arguelles (5) ((1) University of Massachusetts, G. Oestlin (8), G.W. Wilson (1), H. Roussel (3), J.E. Andrews (6), J. Lowenthal (10), J. Puschnig (8), K.E. Johnson (4), K. Grasha (1), M.H. Heyer (1), M. Yun (1), Optica, O. Vega (5), W.F. Wall (5), y Electronica, Y. Tang (1)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-12-18T02:58:03Z","title":"Spatially Resolved Dust, Gas, and Star Formation in the Dwarf Magellanic Irregular NGC4449"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.06233","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":"sha256:592f3824c7ada37de4cbf66e92835e27335704fb36e96a366b6955b454ad8230","target":"record","created_at":"2026-05-18T00:24:47Z","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":"284877aa475996986454f67c3c36564c11523f05dc0c701a1fea148bf512430c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-12-18T02:58:03Z","title_canon_sha256":"854f90c0fc2978c82136ebbe32cb5ab4fd5b80022af87c7a6dc975111377cb00"},"schema_version":"1.0","source":{"id":"1712.06233","kind":"arxiv","version":1}},"canonical_sha256":"30567b9884037181ed3917f9f1420d962e2c7268b2f58f4e77e57dc636c01bed","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"30567b9884037181ed3917f9f1420d962e2c7268b2f58f4e77e57dc636c01bed","first_computed_at":"2026-05-18T00:24:47.425880Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:24:47.425880Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eAA6rP1LL5eTK5MqLwwJ2XB2pgBUgQERAdACFTaN4ejKTAKeFG4WdzjlheIiI211kklKjEZom294jlV2Jv/UCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:24:47.426605Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.06233","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:592f3824c7ada37de4cbf66e92835e27335704fb36e96a366b6955b454ad8230","sha256:d0c4abbb068d0abab96f0c39205f6cd20c991f6a1343a910ce536d2f35f61db4"],"state_sha256":"65988df3c91e1f443f994935eaa87cf07456a406ddbc24aeebb54ac3f11996b1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fCVeB/OQtGzsqF/pN/jJtAtFvvrunSxrU5e0R5+u9EE8Rwr+1GfvfgmLwPSHB4EzdYkVQf4KNI4ZpGdffxytCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T12:49:21.258395Z","bundle_sha256":"94e055da0c600f4da04716f55d966b70b3d1eb097a18c109005616eb60ecbb23"}}