{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:LTZZGNQ5B2BF26OJOQQCVS6XE6","short_pith_number":"pith:LTZZGNQ5","canonical_record":{"source":{"id":"1701.08656","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-01-30T15:37:26Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"36ab51b45a115815ef2d15c02baeb274939de4b72144d94920077a5921f63b73","abstract_canon_sha256":"c748b86eb5a99fc2a6c034ff866f9eaa60801e50134f502e9e5bff9577bb114e"},"schema_version":"1.0"},"canonical_sha256":"5cf393361d0e825d79c974202acbd727903673f5656bf73f53ec4b3b8fd4b5a5","source":{"kind":"arxiv","id":"1701.08656","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.08656","created_at":"2026-05-18T00:48:15Z"},{"alias_kind":"arxiv_version","alias_value":"1701.08656v1","created_at":"2026-05-18T00:48:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.08656","created_at":"2026-05-18T00:48:15Z"},{"alias_kind":"pith_short_12","alias_value":"LTZZGNQ5B2BF","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"LTZZGNQ5B2BF26OJ","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"LTZZGNQ5","created_at":"2026-05-18T12:31:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:LTZZGNQ5B2BF26OJOQQCVS6XE6","target":"record","payload":{"canonical_record":{"source":{"id":"1701.08656","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-01-30T15:37:26Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"36ab51b45a115815ef2d15c02baeb274939de4b72144d94920077a5921f63b73","abstract_canon_sha256":"c748b86eb5a99fc2a6c034ff866f9eaa60801e50134f502e9e5bff9577bb114e"},"schema_version":"1.0"},"canonical_sha256":"5cf393361d0e825d79c974202acbd727903673f5656bf73f53ec4b3b8fd4b5a5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:48:15.052622Z","signature_b64":"u4YsuPbqL4JS8zEwE0nIFx2kA1T9bi14iPPJA73swE8eJekKYBgkZgbpkkbwCl5h0OJQcntLfvRbbgvPoaOoDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5cf393361d0e825d79c974202acbd727903673f5656bf73f53ec4b3b8fd4b5a5","last_reissued_at":"2026-05-18T00:48:15.051931Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:48:15.051931Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1701.08656","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":"2026-05-18T00:48:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B8q3rHTB6a5CJx+JlYy/qgcfzNYcJxAnGDf1xSUjxozkYus39z+gC1zqGXdmEsoEtYExBnyq4bR3zIHgbQwZAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T10:15:17.520513Z"},"content_sha256":"df7f03a230d7ae55798beec2b2876fb663448837183dd611fc4b046b2b272fa0","schema_version":"1.0","event_id":"sha256:df7f03a230d7ae55798beec2b2876fb663448837183dd611fc4b046b2b272fa0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:LTZZGNQ5B2BF26OJOQQCVS6XE6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Decrease of the organic deuteration during the evolution of Sun-like protostars: the case of SVS13-A","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"1), 2), (2) Dipartimento di Fisica e Astronomia, (3) Univ. Grenoble Alpes, 4, 4), (4) CNRS, (5) ESO, (6) IGN, (7) Leiden Observatory, B. Lefloch (3, C. Ceccarelli (3, C. Codella (1), E. Bianchi (1, F. Fontani (1), IPAG, Leiden University), L. Podio (1), L. Testi (5, Observatorio Astron\\'omico Nacional, R. Bachiller (6), Universit\\`a degli Studi di Firenze, V. Taquet (7) ((1) INAF-Osservatorio Astrofisico di Arcetri","submitted_at":"2017-01-30T15:37:26Z","abstract_excerpt":"We present the results of formaldehyde and methanol deuteration measurements towards the Class I low-mass protostar SVS13-A, in the framework of the IRAM 30-m ASAI (Astrochemical Surveys At IRAM) project. We detected emission lines of formaldehyde, methanol, and their deuterated forms (HDCO, D2CO, CHD2OH, CH3OD) with Eup up to 276 K. The formaldehyde analysis indicates Tkin = 15 - 30 K, n (H2) >= 10^6 cm^-3, and a size of about 1200 AU suggesting an origin in the protostellar envelope. For methanol we find two components: (i) a high temperature (Tkin = 80 K) and very dense (> 10^8 cm^-3}) gas "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.08656","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":"2026-05-18T00:48:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7biQAFRQvtqivT9g5xiPWM7bYBdZ8anruVLWx9ddsLOTPqF2MOLk5x1juYmSHVW3s/21YwLG6yttvh02NQAWCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T10:15:17.520858Z"},"content_sha256":"8d2ac688ca15ea2be3a7bcd1a21ffcc7ca8d0fec381be804721e0eff84685bc6","schema_version":"1.0","event_id":"sha256:8d2ac688ca15ea2be3a7bcd1a21ffcc7ca8d0fec381be804721e0eff84685bc6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LTZZGNQ5B2BF26OJOQQCVS6XE6/bundle.json","state_url":"https://pith.science/pith/LTZZGNQ5B2BF26OJOQQCVS6XE6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LTZZGNQ5B2BF26OJOQQCVS6XE6/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":"2026-06-02T10:15:17Z","links":{"resolver":"https://pith.science/pith/LTZZGNQ5B2BF26OJOQQCVS6XE6","bundle":"https://pith.science/pith/LTZZGNQ5B2BF26OJOQQCVS6XE6/bundle.json","state":"https://pith.science/pith/LTZZGNQ5B2BF26OJOQQCVS6XE6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LTZZGNQ5B2BF26OJOQQCVS6XE6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:LTZZGNQ5B2BF26OJOQQCVS6XE6","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":"c748b86eb5a99fc2a6c034ff866f9eaa60801e50134f502e9e5bff9577bb114e","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-01-30T15:37:26Z","title_canon_sha256":"36ab51b45a115815ef2d15c02baeb274939de4b72144d94920077a5921f63b73"},"schema_version":"1.0","source":{"id":"1701.08656","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.08656","created_at":"2026-05-18T00:48:15Z"},{"alias_kind":"arxiv_version","alias_value":"1701.08656v1","created_at":"2026-05-18T00:48:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.08656","created_at":"2026-05-18T00:48:15Z"},{"alias_kind":"pith_short_12","alias_value":"LTZZGNQ5B2BF","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"LTZZGNQ5B2BF26OJ","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"LTZZGNQ5","created_at":"2026-05-18T12:31:28Z"}],"graph_snapshots":[{"event_id":"sha256:8d2ac688ca15ea2be3a7bcd1a21ffcc7ca8d0fec381be804721e0eff84685bc6","target":"graph","created_at":"2026-05-18T00:48:15Z","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 the results of formaldehyde and methanol deuteration measurements towards the Class I low-mass protostar SVS13-A, in the framework of the IRAM 30-m ASAI (Astrochemical Surveys At IRAM) project. We detected emission lines of formaldehyde, methanol, and their deuterated forms (HDCO, D2CO, CHD2OH, CH3OD) with Eup up to 276 K. The formaldehyde analysis indicates Tkin = 15 - 30 K, n (H2) >= 10^6 cm^-3, and a size of about 1200 AU suggesting an origin in the protostellar envelope. For methanol we find two components: (i) a high temperature (Tkin = 80 K) and very dense (> 10^8 cm^-3}) gas ","authors_text":"1), 2), (2) Dipartimento di Fisica e Astronomia, (3) Univ. Grenoble Alpes, 4, 4), (4) CNRS, (5) ESO, (6) IGN, (7) Leiden Observatory, B. Lefloch (3, C. Ceccarelli (3, C. Codella (1), E. Bianchi (1, F. Fontani (1), IPAG, Leiden University), L. Podio (1), L. Testi (5, Observatorio Astron\\'omico Nacional, R. Bachiller (6), Universit\\`a degli Studi di Firenze, V. Taquet (7) ((1) INAF-Osservatorio Astrofisico di Arcetri","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-01-30T15:37:26Z","title":"Decrease of the organic deuteration during the evolution of Sun-like protostars: the case of SVS13-A"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.08656","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:df7f03a230d7ae55798beec2b2876fb663448837183dd611fc4b046b2b272fa0","target":"record","created_at":"2026-05-18T00:48:15Z","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":"c748b86eb5a99fc2a6c034ff866f9eaa60801e50134f502e9e5bff9577bb114e","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-01-30T15:37:26Z","title_canon_sha256":"36ab51b45a115815ef2d15c02baeb274939de4b72144d94920077a5921f63b73"},"schema_version":"1.0","source":{"id":"1701.08656","kind":"arxiv","version":1}},"canonical_sha256":"5cf393361d0e825d79c974202acbd727903673f5656bf73f53ec4b3b8fd4b5a5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5cf393361d0e825d79c974202acbd727903673f5656bf73f53ec4b3b8fd4b5a5","first_computed_at":"2026-05-18T00:48:15.051931Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:48:15.051931Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"u4YsuPbqL4JS8zEwE0nIFx2kA1T9bi14iPPJA73swE8eJekKYBgkZgbpkkbwCl5h0OJQcntLfvRbbgvPoaOoDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:48:15.052622Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.08656","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:df7f03a230d7ae55798beec2b2876fb663448837183dd611fc4b046b2b272fa0","sha256:8d2ac688ca15ea2be3a7bcd1a21ffcc7ca8d0fec381be804721e0eff84685bc6"],"state_sha256":"c660b8397921b7447077719ec6dd4a727cbdc9cb4098f8c410bd8943a142fdc5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o4Ja9/HBzszVjgZXxs/PAyIZiO4rg8bm71oXb5OWBbF5EsfOYoIBRpv4cA2+aQSNpCFalDhEzzJkCgbJt8R2AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T10:15:17.522784Z","bundle_sha256":"2c939466950e67d2f71e26dc347dc15d8054e30bac52fdf9bdf1c31b40e1282d"}}