{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:PA6LT24PXHIYVXFAQOLJ3VLGOB","short_pith_number":"pith:PA6LT24P","canonical_record":{"source":{"id":"1705.09496","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-05-26T09:29:53Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"39145760d300e64e2ac96bc09119380ef205603c2f9842407db2475b41b37833","abstract_canon_sha256":"262a1781296efeb2b009001fd29f71209a1f06ab11eb6c96db23779d7df8fb0f"},"schema_version":"1.0"},"canonical_sha256":"783cb9eb8fb9d18adca083969dd56670476c59ad668fc33971462ec0793d6cf9","source":{"kind":"arxiv","id":"1705.09496","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.09496","created_at":"2026-05-18T00:38:52Z"},{"alias_kind":"arxiv_version","alias_value":"1705.09496v1","created_at":"2026-05-18T00:38:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.09496","created_at":"2026-05-18T00:38:52Z"},{"alias_kind":"pith_short_12","alias_value":"PA6LT24PXHIY","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"PA6LT24PXHIYVXFA","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"PA6LT24P","created_at":"2026-05-18T12:31:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:PA6LT24PXHIYVXFAQOLJ3VLGOB","target":"record","payload":{"canonical_record":{"source":{"id":"1705.09496","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-05-26T09:29:53Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"39145760d300e64e2ac96bc09119380ef205603c2f9842407db2475b41b37833","abstract_canon_sha256":"262a1781296efeb2b009001fd29f71209a1f06ab11eb6c96db23779d7df8fb0f"},"schema_version":"1.0"},"canonical_sha256":"783cb9eb8fb9d18adca083969dd56670476c59ad668fc33971462ec0793d6cf9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:38:52.042056Z","signature_b64":"LU01o7DYnNVIzSvgrzrTuWpckHM74w5EfCE4mhlNHCD/2yJcMgkiaJiYyvsDxNp99aSLdrUihH40dNN3KYwkBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"783cb9eb8fb9d18adca083969dd56670476c59ad668fc33971462ec0793d6cf9","last_reissued_at":"2026-05-18T00:38:52.041519Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:38:52.041519Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1705.09496","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":"2026-05-18T00:38:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IThGg5I9AIIgMIxb5K61fHihHthU0MuREsL4YjY31Jzvg1OHmCSydKjdmtlWvE6HzogB+BWGPYuvUUfqjbrmCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T18:12:12.337131Z"},"content_sha256":"1237c4b987f3eba5ddb4ad0a73258c59eda152acdc92718273ea02d7ddc3c92e","schema_version":"1.0","event_id":"sha256:1237c4b987f3eba5ddb4ad0a73258c59eda152acdc92718273ea02d7ddc3c92e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:PA6LT24PXHIYVXFAQOLJ3VLGOB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Tale of Three Cities: OmegaCAM discovers multiple sequences in the color-magnitude diagram of the Orion Nebula Cluster","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"C.F. Manara, D. Fedele, E.L. Martin, G. Beccari, G. Carraro, G. de Marchi, H.M.J. Boffin, J.E. Drew, J.R. Walsh, J.S. Vink, L. Testi, M.G. Petr-Gotzens, M. Romaniello, N.J. Wright, N. Panagia, S. Mieske, V.M. Kalari, W.-J. de Wit","submitted_at":"2017-05-26T09:29:53Z","abstract_excerpt":"As part of the Accretion Discs in H$\\alpha$ with OmegaCAM (ADHOC) survey, we imaged in r, i and H-alpha a region of 12x8 square degrees around the Orion Nebula Cluster. Thanks to the high-quality photometry obtained, we discovered three well-separated pre-main sequences in the color-magnitude diagram. The populations are all concentrated towards the cluster's center. Although several explanations can be invoked to explain these sequences we are left with two competitive, but intriguing, scenarios: a population of unresolved binaries with an exotic mass ratio distribution or three populations w"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.09496","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":"2026-05-18T00:38:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QNO/hY3VOnAX1/A0WBZH4ECxUxT1c6q1rEJuZ4/e+wJas/zji7VXjlEKej564aZbngZndBJFPcJumqnC36ETDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T18:12:12.337494Z"},"content_sha256":"3cc5a26f458e2550166cecd7907f8bf00396e8a95564b216f56f6d76c11541a9","schema_version":"1.0","event_id":"sha256:3cc5a26f458e2550166cecd7907f8bf00396e8a95564b216f56f6d76c11541a9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PA6LT24PXHIYVXFAQOLJ3VLGOB/bundle.json","state_url":"https://pith.science/pith/PA6LT24PXHIYVXFAQOLJ3VLGOB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PA6LT24PXHIYVXFAQOLJ3VLGOB/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":"2026-05-19T18:12:12Z","links":{"resolver":"https://pith.science/pith/PA6LT24PXHIYVXFAQOLJ3VLGOB","bundle":"https://pith.science/pith/PA6LT24PXHIYVXFAQOLJ3VLGOB/bundle.json","state":"https://pith.science/pith/PA6LT24PXHIYVXFAQOLJ3VLGOB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PA6LT24PXHIYVXFAQOLJ3VLGOB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:PA6LT24PXHIYVXFAQOLJ3VLGOB","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":"262a1781296efeb2b009001fd29f71209a1f06ab11eb6c96db23779d7df8fb0f","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-05-26T09:29:53Z","title_canon_sha256":"39145760d300e64e2ac96bc09119380ef205603c2f9842407db2475b41b37833"},"schema_version":"1.0","source":{"id":"1705.09496","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.09496","created_at":"2026-05-18T00:38:52Z"},{"alias_kind":"arxiv_version","alias_value":"1705.09496v1","created_at":"2026-05-18T00:38:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.09496","created_at":"2026-05-18T00:38:52Z"},{"alias_kind":"pith_short_12","alias_value":"PA6LT24PXHIY","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"PA6LT24PXHIYVXFA","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"PA6LT24P","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:3cc5a26f458e2550166cecd7907f8bf00396e8a95564b216f56f6d76c11541a9","target":"graph","created_at":"2026-05-18T00:38:52Z","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":"As part of the Accretion Discs in H$\\alpha$ with OmegaCAM (ADHOC) survey, we imaged in r, i and H-alpha a region of 12x8 square degrees around the Orion Nebula Cluster. Thanks to the high-quality photometry obtained, we discovered three well-separated pre-main sequences in the color-magnitude diagram. The populations are all concentrated towards the cluster's center. Although several explanations can be invoked to explain these sequences we are left with two competitive, but intriguing, scenarios: a population of unresolved binaries with an exotic mass ratio distribution or three populations w","authors_text":"C.F. Manara, D. Fedele, E.L. Martin, G. Beccari, G. Carraro, G. de Marchi, H.M.J. Boffin, J.E. Drew, J.R. Walsh, J.S. Vink, L. Testi, M.G. Petr-Gotzens, M. Romaniello, N.J. Wright, N. Panagia, S. Mieske, V.M. Kalari, W.-J. de Wit","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-05-26T09:29:53Z","title":"A Tale of Three Cities: OmegaCAM discovers multiple sequences in the color-magnitude diagram of the Orion Nebula Cluster"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.09496","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":"sha256:1237c4b987f3eba5ddb4ad0a73258c59eda152acdc92718273ea02d7ddc3c92e","target":"record","created_at":"2026-05-18T00:38:52Z","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":"262a1781296efeb2b009001fd29f71209a1f06ab11eb6c96db23779d7df8fb0f","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-05-26T09:29:53Z","title_canon_sha256":"39145760d300e64e2ac96bc09119380ef205603c2f9842407db2475b41b37833"},"schema_version":"1.0","source":{"id":"1705.09496","kind":"arxiv","version":1}},"canonical_sha256":"783cb9eb8fb9d18adca083969dd56670476c59ad668fc33971462ec0793d6cf9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"783cb9eb8fb9d18adca083969dd56670476c59ad668fc33971462ec0793d6cf9","first_computed_at":"2026-05-18T00:38:52.041519Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:38:52.041519Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LU01o7DYnNVIzSvgrzrTuWpckHM74w5EfCE4mhlNHCD/2yJcMgkiaJiYyvsDxNp99aSLdrUihH40dNN3KYwkBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:38:52.042056Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.09496","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1237c4b987f3eba5ddb4ad0a73258c59eda152acdc92718273ea02d7ddc3c92e","sha256:3cc5a26f458e2550166cecd7907f8bf00396e8a95564b216f56f6d76c11541a9"],"state_sha256":"d1ed945e6bdb89b5f7af8fb103626be9c148aa5bd8da5e4309f06827d2abb1e3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A33LEOUVP2FA1op3HtSJdIlBWipZzHawr+5amdcBk1u3K7sIjvGY68MngmT+0D7EvOlDriif0ssJkVxXbUVBAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T18:12:12.339662Z","bundle_sha256":"bc833e13dc10e8c556ad5588996df734d73617cf7c26040d305624e0d5d049a3"}}