{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:EXWS7STHVAQRSIL7V7SGUNOG3I","short_pith_number":"pith:EXWS7STH","canonical_record":{"source":{"id":"1910.12533","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-10-28T10:28:02Z","cross_cats_sorted":[],"title_canon_sha256":"fd1f57ab628cc4318c1f68d00bbc9f6a6aa115a55f422e446e18e81b23e42823","abstract_canon_sha256":"096e3a2785861fd02be5a11ec4e342f205e62ad67b1c749fe94c9ca9d41ac90e"},"schema_version":"1.0"},"canonical_sha256":"25ed2fca67a82119217fafe46a35c6da05cc46f21153b7ef100226c7b9621f36","source":{"kind":"arxiv","id":"1910.12533","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1910.12533","created_at":"2026-07-05T00:31:27Z"},{"alias_kind":"arxiv_version","alias_value":"1910.12533v1","created_at":"2026-07-05T00:31:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.12533","created_at":"2026-07-05T00:31:27Z"},{"alias_kind":"pith_short_12","alias_value":"EXWS7STHVAQR","created_at":"2026-07-05T00:31:27Z"},{"alias_kind":"pith_short_16","alias_value":"EXWS7STHVAQRSIL7","created_at":"2026-07-05T00:31:27Z"},{"alias_kind":"pith_short_8","alias_value":"EXWS7STH","created_at":"2026-07-05T00:31:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:EXWS7STHVAQRSIL7V7SGUNOG3I","target":"record","payload":{"canonical_record":{"source":{"id":"1910.12533","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-10-28T10:28:02Z","cross_cats_sorted":[],"title_canon_sha256":"fd1f57ab628cc4318c1f68d00bbc9f6a6aa115a55f422e446e18e81b23e42823","abstract_canon_sha256":"096e3a2785861fd02be5a11ec4e342f205e62ad67b1c749fe94c9ca9d41ac90e"},"schema_version":"1.0"},"canonical_sha256":"25ed2fca67a82119217fafe46a35c6da05cc46f21153b7ef100226c7b9621f36","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:31:27.352037Z","signature_b64":"WEiRazItrF2g1A6UFW+Uz5dMg1P555JqfMvLhkI8k1GklXjWkyQUoe0e1xAiyhnkt6zy5R4Dg0M6MBf9MzOEAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"25ed2fca67a82119217fafe46a35c6da05cc46f21153b7ef100226c7b9621f36","last_reissued_at":"2026-07-05T00:31:27.351569Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:31:27.351569Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1910.12533","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":"2026-07-05T00:31:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5xjakGlMi79syGygzxQmcoQuraLmg2NatQwisFwOas9wJY0R2du7tQtmvHXuoiFlYXvfci6PduTHhf5a+0QyDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T13:46:34.042373Z"},"content_sha256":"73b61ef875cb919790eabd88c8028da1be044d5f664b3569cbbe1a5c921dacf0","schema_version":"1.0","event_id":"sha256:73b61ef875cb919790eabd88c8028da1be044d5f664b3569cbbe1a5c921dacf0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:EXWS7STHVAQRSIL7V7SGUNOG3I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Secondary Infall in the Seyfert's Sextet: A Plausible Way Out of the Short Crossing Time Paradox","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Christopher A\\~norve, H\\'ector Javier Ibarra-Medel, Jes\\'us Falcon-Barroso, Jorge K. Barrera-Ballesteros, Juan P. Torres-Papaqui, Mark Birkinshaw, Omar L\\'opez-Cruz, Sebasti\\'an F. S\\'anchez, Wayne A. Barkhouse","submitted_at":"2019-10-28T10:28:02Z","abstract_excerpt":"We used integral field spectroscopy from CALIFA DR3 and multiwavelength publicly-available data to investigate the star-formation histories of galaxies in the Seyfert's Sextet (SS, HCG 79). The galaxies H79a, H79b, H79c, and H79f have low star-formation rates despite showing strong signs of interaction. By exploring their individual specific star formation histories (sSFH), we identified three earlier episodes of strong star formation common to these four galaxies. We use the last two episodes as markers of the epochs when the galaxies were crossing. We suggest that after the first turn-around"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.12533","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/1910.12533/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":"2026-07-05T00:31:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1M63XKyF69mRZImgbmxRjq3MBwWFharwLmERnLIjfd6wgW7OVAiQxO/D5ej/X4KmnnoqBmp24gbFkaby+mBYCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T13:46:34.042756Z"},"content_sha256":"89578b6b76c7a4b9a6a88031f6f5d95e1d8c2b3a661a6ba23d292c28254401b7","schema_version":"1.0","event_id":"sha256:89578b6b76c7a4b9a6a88031f6f5d95e1d8c2b3a661a6ba23d292c28254401b7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EXWS7STHVAQRSIL7V7SGUNOG3I/bundle.json","state_url":"https://pith.science/pith/EXWS7STHVAQRSIL7V7SGUNOG3I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EXWS7STHVAQRSIL7V7SGUNOG3I/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":"2026-07-08T13:46:34Z","links":{"resolver":"https://pith.science/pith/EXWS7STHVAQRSIL7V7SGUNOG3I","bundle":"https://pith.science/pith/EXWS7STHVAQRSIL7V7SGUNOG3I/bundle.json","state":"https://pith.science/pith/EXWS7STHVAQRSIL7V7SGUNOG3I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EXWS7STHVAQRSIL7V7SGUNOG3I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:EXWS7STHVAQRSIL7V7SGUNOG3I","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":"096e3a2785861fd02be5a11ec4e342f205e62ad67b1c749fe94c9ca9d41ac90e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-10-28T10:28:02Z","title_canon_sha256":"fd1f57ab628cc4318c1f68d00bbc9f6a6aa115a55f422e446e18e81b23e42823"},"schema_version":"1.0","source":{"id":"1910.12533","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1910.12533","created_at":"2026-07-05T00:31:27Z"},{"alias_kind":"arxiv_version","alias_value":"1910.12533v1","created_at":"2026-07-05T00:31:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.12533","created_at":"2026-07-05T00:31:27Z"},{"alias_kind":"pith_short_12","alias_value":"EXWS7STHVAQR","created_at":"2026-07-05T00:31:27Z"},{"alias_kind":"pith_short_16","alias_value":"EXWS7STHVAQRSIL7","created_at":"2026-07-05T00:31:27Z"},{"alias_kind":"pith_short_8","alias_value":"EXWS7STH","created_at":"2026-07-05T00:31:27Z"}],"graph_snapshots":[{"event_id":"sha256:89578b6b76c7a4b9a6a88031f6f5d95e1d8c2b3a661a6ba23d292c28254401b7","target":"graph","created_at":"2026-07-05T00:31:27Z","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/1910.12533/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We used integral field spectroscopy from CALIFA DR3 and multiwavelength publicly-available data to investigate the star-formation histories of galaxies in the Seyfert's Sextet (SS, HCG 79). The galaxies H79a, H79b, H79c, and H79f have low star-formation rates despite showing strong signs of interaction. By exploring their individual specific star formation histories (sSFH), we identified three earlier episodes of strong star formation common to these four galaxies. We use the last two episodes as markers of the epochs when the galaxies were crossing. We suggest that after the first turn-around","authors_text":"Christopher A\\~norve, H\\'ector Javier Ibarra-Medel, Jes\\'us Falcon-Barroso, Jorge K. Barrera-Ballesteros, Juan P. Torres-Papaqui, Mark Birkinshaw, Omar L\\'opez-Cruz, Sebasti\\'an F. S\\'anchez, Wayne A. Barkhouse","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-10-28T10:28:02Z","title":"Secondary Infall in the Seyfert's Sextet: A Plausible Way Out of the Short Crossing Time Paradox"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.12533","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":"sha256:73b61ef875cb919790eabd88c8028da1be044d5f664b3569cbbe1a5c921dacf0","target":"record","created_at":"2026-07-05T00:31:27Z","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":"096e3a2785861fd02be5a11ec4e342f205e62ad67b1c749fe94c9ca9d41ac90e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-10-28T10:28:02Z","title_canon_sha256":"fd1f57ab628cc4318c1f68d00bbc9f6a6aa115a55f422e446e18e81b23e42823"},"schema_version":"1.0","source":{"id":"1910.12533","kind":"arxiv","version":1}},"canonical_sha256":"25ed2fca67a82119217fafe46a35c6da05cc46f21153b7ef100226c7b9621f36","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"25ed2fca67a82119217fafe46a35c6da05cc46f21153b7ef100226c7b9621f36","first_computed_at":"2026-07-05T00:31:27.351569Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:31:27.351569Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WEiRazItrF2g1A6UFW+Uz5dMg1P555JqfMvLhkI8k1GklXjWkyQUoe0e1xAiyhnkt6zy5R4Dg0M6MBf9MzOEAg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:31:27.352037Z","signed_message":"canonical_sha256_bytes"},"source_id":"1910.12533","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:73b61ef875cb919790eabd88c8028da1be044d5f664b3569cbbe1a5c921dacf0","sha256:89578b6b76c7a4b9a6a88031f6f5d95e1d8c2b3a661a6ba23d292c28254401b7"],"state_sha256":"abb298703002d85a73862a899be59eec213771c6ab57372d4fb045b556d7c525"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FoJzTR5CPY1T6V35k8lm226qpWGKgXm5N5PsYeP70E+sNDY7zvdcAtr6yr3Og5ekNXEr308Se6RUQ2sEwsv/CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-08T13:46:34.044908Z","bundle_sha256":"8078ed0362658fd6c0c4ed9ed96f6ef3131f2eef8b9e83f9e0e6d35e167e3a65"}}