{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:I6KIVALSOSLMJZRILSDJXITHLM","short_pith_number":"pith:I6KIVALS","canonical_record":{"source":{"id":"1602.06927","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-02-22T20:30:15Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"c08efb8f9f201514c32a31977ef009a2b43d64bb4de04431ca02a1f1abda2090","abstract_canon_sha256":"fd0d66183b8ec841adcba812f558002d31785a5272b50d6503126453db5f583c"},"schema_version":"1.0"},"canonical_sha256":"47948a81727496c4e6285c869ba2675b0e4d5107573b17271e3d53a6b55904ba","source":{"kind":"arxiv","id":"1602.06927","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.06927","created_at":"2026-05-18T01:19:24Z"},{"alias_kind":"arxiv_version","alias_value":"1602.06927v1","created_at":"2026-05-18T01:19:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.06927","created_at":"2026-05-18T01:19:24Z"},{"alias_kind":"pith_short_12","alias_value":"I6KIVALSOSLM","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_16","alias_value":"I6KIVALSOSLMJZRI","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_8","alias_value":"I6KIVALS","created_at":"2026-05-18T12:30:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:I6KIVALSOSLMJZRILSDJXITHLM","target":"record","payload":{"canonical_record":{"source":{"id":"1602.06927","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-02-22T20:30:15Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"c08efb8f9f201514c32a31977ef009a2b43d64bb4de04431ca02a1f1abda2090","abstract_canon_sha256":"fd0d66183b8ec841adcba812f558002d31785a5272b50d6503126453db5f583c"},"schema_version":"1.0"},"canonical_sha256":"47948a81727496c4e6285c869ba2675b0e4d5107573b17271e3d53a6b55904ba","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:19:24.087489Z","signature_b64":"WEJ2abmkwuI3rMYEVqdQYPjhMuStdo+k5Qf2K7DikDuQDSMeS+lnfl5rNxe9uc94pGFPHw8j7xxnPDXkpsdBAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"47948a81727496c4e6285c869ba2675b0e4d5107573b17271e3d53a6b55904ba","last_reissued_at":"2026-05-18T01:19:24.086799Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:19:24.086799Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1602.06927","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":"2026-05-18T01:19:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pV5RYwW8xv7sCAMiny/cA4BbuYZ7PUbdqJdvAqTTYaW07a8hfq3+8T6Zp4xFkzdwDFs+rp8G9IqcSTE/wvgZAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T00:31:18.198843Z"},"content_sha256":"f31c7804f91ba3b43121c2388aad80a9b236bd2dd0f43efa6fef41c04009e935","schema_version":"1.0","event_id":"sha256:f31c7804f91ba3b43121c2388aad80a9b236bd2dd0f43efa6fef41c04009e935"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:I6KIVALSOSLMJZRILSDJXITHLM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Far-infrared/sub-millimetre properties of pre-stellar cores L1521E, L1521F and L1689B as revealed by the Herschel SPIRE instrument -- I. Central positions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.GA","authors_text":"Alain Abergel, David A. Naylor, Derek Ward-Thompson, Gibion Makiwa, Jason Kirk, Matthijs van der Wiel, Melanie Koehler, Stewart Eyres","submitted_at":"2016-02-22T20:30:15Z","abstract_excerpt":"Dust grains play a key role in the physics of star-forming regions, even though they constitute only $\\sim$1 % of the mass of the interstellar medium. The derivation of accurate dust parameters such as temperature ($T_{dust}$), emissivity spectral index ($\\beta$) and column density requires broadband continuum observations at far-infrared wavelengths. We present Herschel-SPIRE Fourier Transform Spectrometer (FTS) measurements of three starless cores: L1521E, L1521F and L1689B, covering wavelengths between 194 and 671 $\\mu$m. This paper is the first to use our recently updated SPIRE-FTS intensi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.06927","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":"2026-05-18T01:19:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E2Lbt89bTBxsl5ANNWibf7AB8/rTGlkJIoEAbgxxX5UHzkgLO8XjhKYescXukXXfTZgV8IbJflhRdgYq5T7EDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T00:31:18.199307Z"},"content_sha256":"43cd10e290d38386e8745f50981d4ca4bd00a05d53e0a17c8eba6780556a5c8f","schema_version":"1.0","event_id":"sha256:43cd10e290d38386e8745f50981d4ca4bd00a05d53e0a17c8eba6780556a5c8f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/I6KIVALSOSLMJZRILSDJXITHLM/bundle.json","state_url":"https://pith.science/pith/I6KIVALSOSLMJZRILSDJXITHLM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/I6KIVALSOSLMJZRILSDJXITHLM/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":"2026-05-26T00:31:18Z","links":{"resolver":"https://pith.science/pith/I6KIVALSOSLMJZRILSDJXITHLM","bundle":"https://pith.science/pith/I6KIVALSOSLMJZRILSDJXITHLM/bundle.json","state":"https://pith.science/pith/I6KIVALSOSLMJZRILSDJXITHLM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/I6KIVALSOSLMJZRILSDJXITHLM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:I6KIVALSOSLMJZRILSDJXITHLM","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":"fd0d66183b8ec841adcba812f558002d31785a5272b50d6503126453db5f583c","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-02-22T20:30:15Z","title_canon_sha256":"c08efb8f9f201514c32a31977ef009a2b43d64bb4de04431ca02a1f1abda2090"},"schema_version":"1.0","source":{"id":"1602.06927","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.06927","created_at":"2026-05-18T01:19:24Z"},{"alias_kind":"arxiv_version","alias_value":"1602.06927v1","created_at":"2026-05-18T01:19:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.06927","created_at":"2026-05-18T01:19:24Z"},{"alias_kind":"pith_short_12","alias_value":"I6KIVALSOSLM","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_16","alias_value":"I6KIVALSOSLMJZRI","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_8","alias_value":"I6KIVALS","created_at":"2026-05-18T12:30:22Z"}],"graph_snapshots":[{"event_id":"sha256:43cd10e290d38386e8745f50981d4ca4bd00a05d53e0a17c8eba6780556a5c8f","target":"graph","created_at":"2026-05-18T01:19:24Z","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":"Dust grains play a key role in the physics of star-forming regions, even though they constitute only $\\sim$1 % of the mass of the interstellar medium. The derivation of accurate dust parameters such as temperature ($T_{dust}$), emissivity spectral index ($\\beta$) and column density requires broadband continuum observations at far-infrared wavelengths. We present Herschel-SPIRE Fourier Transform Spectrometer (FTS) measurements of three starless cores: L1521E, L1521F and L1689B, covering wavelengths between 194 and 671 $\\mu$m. This paper is the first to use our recently updated SPIRE-FTS intensi","authors_text":"Alain Abergel, David A. Naylor, Derek Ward-Thompson, Gibion Makiwa, Jason Kirk, Matthijs van der Wiel, Melanie Koehler, Stewart Eyres","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-02-22T20:30:15Z","title":"Far-infrared/sub-millimetre properties of pre-stellar cores L1521E, L1521F and L1689B as revealed by the Herschel SPIRE instrument -- I. Central positions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.06927","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:f31c7804f91ba3b43121c2388aad80a9b236bd2dd0f43efa6fef41c04009e935","target":"record","created_at":"2026-05-18T01:19:24Z","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":"fd0d66183b8ec841adcba812f558002d31785a5272b50d6503126453db5f583c","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-02-22T20:30:15Z","title_canon_sha256":"c08efb8f9f201514c32a31977ef009a2b43d64bb4de04431ca02a1f1abda2090"},"schema_version":"1.0","source":{"id":"1602.06927","kind":"arxiv","version":1}},"canonical_sha256":"47948a81727496c4e6285c869ba2675b0e4d5107573b17271e3d53a6b55904ba","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"47948a81727496c4e6285c869ba2675b0e4d5107573b17271e3d53a6b55904ba","first_computed_at":"2026-05-18T01:19:24.086799Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:19:24.086799Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WEJ2abmkwuI3rMYEVqdQYPjhMuStdo+k5Qf2K7DikDuQDSMeS+lnfl5rNxe9uc94pGFPHw8j7xxnPDXkpsdBAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:19:24.087489Z","signed_message":"canonical_sha256_bytes"},"source_id":"1602.06927","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f31c7804f91ba3b43121c2388aad80a9b236bd2dd0f43efa6fef41c04009e935","sha256:43cd10e290d38386e8745f50981d4ca4bd00a05d53e0a17c8eba6780556a5c8f"],"state_sha256":"fe22bd977335cbecf4916614352a5db6c8ec479bf1e77193a840477164339a57"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tZLdWJ6kDnNzFO70lsuG35qPU0OAxP9mY5o3oXFNHhzKjnYJMS7SCEWnqsRYzOwOJiidl8ki7Q3NsSS8X+FzDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T00:31:18.202326Z","bundle_sha256":"284e4979a247c19913b79b5c043dafc4f11e1fe8a285d430100e1d26d8e4c32b"}}