{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:IMRTA5OBVTNXLU6LS4N24FSKOD","short_pith_number":"pith:IMRTA5OB","canonical_record":{"source":{"id":"1612.02588","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-12-08T10:35:23Z","cross_cats_sorted":[],"title_canon_sha256":"23c964566f20db7dab6f1ed39d1b488ce6a1228c9762fe282d73e9367b0cb659","abstract_canon_sha256":"3627c4b48ebf50e69044e3dbbb60ec0a734d5de05de8dd8d8052f4e160192c8a"},"schema_version":"1.0"},"canonical_sha256":"43233075c1acdb75d3cb971bae164a70c095fa8ba2436e59ef86fb59c51ade8a","source":{"kind":"arxiv","id":"1612.02588","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1612.02588","created_at":"2026-05-18T00:49:10Z"},{"alias_kind":"arxiv_version","alias_value":"1612.02588v1","created_at":"2026-05-18T00:49:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.02588","created_at":"2026-05-18T00:49:10Z"},{"alias_kind":"pith_short_12","alias_value":"IMRTA5OBVTNX","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_16","alias_value":"IMRTA5OBVTNXLU6L","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_8","alias_value":"IMRTA5OB","created_at":"2026-05-18T12:30:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:IMRTA5OBVTNXLU6LS4N24FSKOD","target":"record","payload":{"canonical_record":{"source":{"id":"1612.02588","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-12-08T10:35:23Z","cross_cats_sorted":[],"title_canon_sha256":"23c964566f20db7dab6f1ed39d1b488ce6a1228c9762fe282d73e9367b0cb659","abstract_canon_sha256":"3627c4b48ebf50e69044e3dbbb60ec0a734d5de05de8dd8d8052f4e160192c8a"},"schema_version":"1.0"},"canonical_sha256":"43233075c1acdb75d3cb971bae164a70c095fa8ba2436e59ef86fb59c51ade8a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:49:10.867574Z","signature_b64":"32WAVLc2WxFO8JPYxbGpuqiYX1inKDCAH4KHudjEwy/jVTm7MGBDQJBNA/v/NwncPWuPpVL6LdArnbjuUsSWBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"43233075c1acdb75d3cb971bae164a70c095fa8ba2436e59ef86fb59c51ade8a","last_reissued_at":"2026-05-18T00:49:10.866957Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:49:10.866957Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1612.02588","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":"2026-05-18T00:49:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZECBy3BiHL7y0cQHidm/FzQiNwsTiOBDK/Ft9XKVeEd+YhQTb7PuVa6z9qurD4AzBmpb5NmNOsOLsucJ/r5/Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T14:31:27.087130Z"},"content_sha256":"5f7e98c2346244cf53f32d9cf50d97cf4e27f44d3597d52361df8c27944d3189","schema_version":"1.0","event_id":"sha256:5f7e98c2346244cf53f32d9cf50d97cf4e27f44d3597d52361df8c27944d3189"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:IMRTA5OBVTNXLU6LS4N24FSKOD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Long period variable stars in NGC 147 and NGC 185. I. Their star formation histories","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Atefeh Javadi, Elham Saremi, Habib Khosroshahi, Jacco Th. van Loon, Roya H. Golshan","submitted_at":"2016-12-08T10:35:23Z","abstract_excerpt":"NGC 147 and NGC 185 are two of the most massive satellites of the Andromeda galaxy (M 31). Close together in the sky, of similar mass and morphological type dE, they possess different amounts of interstellar gas and tidal distortion. The question therefore is, how do their histories compare? Here we present the first reconstruction of the star formation histories of NGC 147 and NGC 185 using long-period variable stars. These represent the final phase of evolution of low- and intermediate-mass stars at the asymptotic giant branch, when their luminosity is related to their birth mass. Combining "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.02588","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":"2026-05-18T00:49:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H5Y4rRdY9ksj2dEZPFoRPwnsjmN39R/iCjlaufe7f6xVLXaAVWUpc2OGysPrBn8vDdbr57kfLjaM5XHWUS+QBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T14:31:27.087671Z"},"content_sha256":"c9779a751e1b5be509a6ebf34c740afbc0428948333f46e156dcbb77a1ae0f78","schema_version":"1.0","event_id":"sha256:c9779a751e1b5be509a6ebf34c740afbc0428948333f46e156dcbb77a1ae0f78"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IMRTA5OBVTNXLU6LS4N24FSKOD/bundle.json","state_url":"https://pith.science/pith/IMRTA5OBVTNXLU6LS4N24FSKOD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IMRTA5OBVTNXLU6LS4N24FSKOD/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":"2026-05-28T14:31:27Z","links":{"resolver":"https://pith.science/pith/IMRTA5OBVTNXLU6LS4N24FSKOD","bundle":"https://pith.science/pith/IMRTA5OBVTNXLU6LS4N24FSKOD/bundle.json","state":"https://pith.science/pith/IMRTA5OBVTNXLU6LS4N24FSKOD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IMRTA5OBVTNXLU6LS4N24FSKOD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:IMRTA5OBVTNXLU6LS4N24FSKOD","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":"3627c4b48ebf50e69044e3dbbb60ec0a734d5de05de8dd8d8052f4e160192c8a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-12-08T10:35:23Z","title_canon_sha256":"23c964566f20db7dab6f1ed39d1b488ce6a1228c9762fe282d73e9367b0cb659"},"schema_version":"1.0","source":{"id":"1612.02588","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1612.02588","created_at":"2026-05-18T00:49:10Z"},{"alias_kind":"arxiv_version","alias_value":"1612.02588v1","created_at":"2026-05-18T00:49:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.02588","created_at":"2026-05-18T00:49:10Z"},{"alias_kind":"pith_short_12","alias_value":"IMRTA5OBVTNX","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_16","alias_value":"IMRTA5OBVTNXLU6L","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_8","alias_value":"IMRTA5OB","created_at":"2026-05-18T12:30:22Z"}],"graph_snapshots":[{"event_id":"sha256:c9779a751e1b5be509a6ebf34c740afbc0428948333f46e156dcbb77a1ae0f78","target":"graph","created_at":"2026-05-18T00:49:10Z","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":"NGC 147 and NGC 185 are two of the most massive satellites of the Andromeda galaxy (M 31). Close together in the sky, of similar mass and morphological type dE, they possess different amounts of interstellar gas and tidal distortion. The question therefore is, how do their histories compare? Here we present the first reconstruction of the star formation histories of NGC 147 and NGC 185 using long-period variable stars. These represent the final phase of evolution of low- and intermediate-mass stars at the asymptotic giant branch, when their luminosity is related to their birth mass. Combining ","authors_text":"Atefeh Javadi, Elham Saremi, Habib Khosroshahi, Jacco Th. van Loon, Roya H. Golshan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-12-08T10:35:23Z","title":"Long period variable stars in NGC 147 and NGC 185. I. Their star formation histories"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.02588","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":"sha256:5f7e98c2346244cf53f32d9cf50d97cf4e27f44d3597d52361df8c27944d3189","target":"record","created_at":"2026-05-18T00:49:10Z","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":"3627c4b48ebf50e69044e3dbbb60ec0a734d5de05de8dd8d8052f4e160192c8a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-12-08T10:35:23Z","title_canon_sha256":"23c964566f20db7dab6f1ed39d1b488ce6a1228c9762fe282d73e9367b0cb659"},"schema_version":"1.0","source":{"id":"1612.02588","kind":"arxiv","version":1}},"canonical_sha256":"43233075c1acdb75d3cb971bae164a70c095fa8ba2436e59ef86fb59c51ade8a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"43233075c1acdb75d3cb971bae164a70c095fa8ba2436e59ef86fb59c51ade8a","first_computed_at":"2026-05-18T00:49:10.866957Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:49:10.866957Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"32WAVLc2WxFO8JPYxbGpuqiYX1inKDCAH4KHudjEwy/jVTm7MGBDQJBNA/v/NwncPWuPpVL6LdArnbjuUsSWBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:49:10.867574Z","signed_message":"canonical_sha256_bytes"},"source_id":"1612.02588","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5f7e98c2346244cf53f32d9cf50d97cf4e27f44d3597d52361df8c27944d3189","sha256:c9779a751e1b5be509a6ebf34c740afbc0428948333f46e156dcbb77a1ae0f78"],"state_sha256":"44bec17759a49b0fabdd16ea842c4931369496a446dba52b685d2fb6a326d47f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FEHjq6fkAguCEtjHBSSzrdSJJQSBR6Do9NCyjNo19D+CRTpY0g8FQuTu9gSm7iA1rKcxZ5nPXhJrDfZK0hvIBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T14:31:27.090814Z","bundle_sha256":"76d8af108e5440c2948533191c74dfc1e541cb62492a5b81e82fe846c8f4a0f7"}}