{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:U7TPRVHUJ2E46NOYLLEAQ66BQL","short_pith_number":"pith:U7TPRVHU","canonical_record":{"source":{"id":"1709.02915","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-09-09T05:56:36Z","cross_cats_sorted":[],"title_canon_sha256":"4d65ef7dc1ef8af6bd8f64e6cfc74037e7ffbafe680a701b2eb68c3835f243ef","abstract_canon_sha256":"4171db69a569b5b2fbdf8fe6164683b8ccf5fd43eb2fd9bb3dbd9217c6dbb9db"},"schema_version":"1.0"},"canonical_sha256":"a7e6f8d4f44e89cf35d85ac8087bc182fd7ac842b40e28da181bf18a85e0484e","source":{"kind":"arxiv","id":"1709.02915","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.02915","created_at":"2026-05-18T00:29:28Z"},{"alias_kind":"arxiv_version","alias_value":"1709.02915v1","created_at":"2026-05-18T00:29:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.02915","created_at":"2026-05-18T00:29:28Z"},{"alias_kind":"pith_short_12","alias_value":"U7TPRVHUJ2E4","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"U7TPRVHUJ2E46NOY","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"U7TPRVHU","created_at":"2026-05-18T12:31:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:U7TPRVHUJ2E46NOYLLEAQ66BQL","target":"record","payload":{"canonical_record":{"source":{"id":"1709.02915","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-09-09T05:56:36Z","cross_cats_sorted":[],"title_canon_sha256":"4d65ef7dc1ef8af6bd8f64e6cfc74037e7ffbafe680a701b2eb68c3835f243ef","abstract_canon_sha256":"4171db69a569b5b2fbdf8fe6164683b8ccf5fd43eb2fd9bb3dbd9217c6dbb9db"},"schema_version":"1.0"},"canonical_sha256":"a7e6f8d4f44e89cf35d85ac8087bc182fd7ac842b40e28da181bf18a85e0484e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:29:28.914449Z","signature_b64":"JtQ+21TVz1yyQ8/eALpiz3GPLjXolRCKsJ+1aNUp/Sw1OFlOjyH6nsVM2B3Ym5uqG3QsjuSM5wthc4ULyTEtCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a7e6f8d4f44e89cf35d85ac8087bc182fd7ac842b40e28da181bf18a85e0484e","last_reissued_at":"2026-05-18T00:29:28.913505Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:29:28.913505Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.02915","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":"2026-05-18T00:29:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gKAXrZENqWWKqjPizOweTYp1wN8vWHBk4TR2h0mePIejDjPF6J75oZN8sgzIOFIa02WBtxaak/bmearNTA4SCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T14:24:09.727381Z"},"content_sha256":"00f0362f2615f624b40117dbee673c17ed69302106ac92aa6d5ccfad87f2ba01","schema_version":"1.0","event_id":"sha256:00f0362f2615f624b40117dbee673c17ed69302106ac92aa6d5ccfad87f2ba01"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:U7TPRVHUJ2E46NOYLLEAQ66BQL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Outer Envelopes of Globular Clusters. II. NGC 1851, NGC 5824 and NGC 1261","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. D. Mackey, G. S. Da Costa, P. B. Kuzma","submitted_at":"2017-09-09T05:56:36Z","abstract_excerpt":"We present a second set of results from a wide-field photometric survey of the environs of Milky Way globular clusters. The clusters studied are NGC 1261, NGC 1851 and NGC 5824: all have data from DECam on the Blanco 4m telescope. NGC 5824 also has data from the Magellan Clay telescope with MegaCam. We confirm the existence of a large diffuse stellar envelope surrounding NGC 1851 of size at least 240 pc in radius. The radial density profile of the envelope follows a power-law decline with index $\\gamma = -1.5 \\pm 0.2$ and the projected shape is slightly elliptical. For NGC 5824 there is no str"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.02915","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":"2026-05-18T00:29:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MXss8J+q7hWWbnC89U3r9PVxCuCiTQCmLSonftWV1uXzQY8oNmvEMfmtPMezuPPOSrKQRVkrGP0vYlSqHsexCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T14:24:09.728073Z"},"content_sha256":"f00c079cac4439cdff579cb8223ca429740f001f17b0ef11aa7fb7e57e7294c2","schema_version":"1.0","event_id":"sha256:f00c079cac4439cdff579cb8223ca429740f001f17b0ef11aa7fb7e57e7294c2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U7TPRVHUJ2E46NOYLLEAQ66BQL/bundle.json","state_url":"https://pith.science/pith/U7TPRVHUJ2E46NOYLLEAQ66BQL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U7TPRVHUJ2E46NOYLLEAQ66BQL/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":"2026-05-25T14:24:09Z","links":{"resolver":"https://pith.science/pith/U7TPRVHUJ2E46NOYLLEAQ66BQL","bundle":"https://pith.science/pith/U7TPRVHUJ2E46NOYLLEAQ66BQL/bundle.json","state":"https://pith.science/pith/U7TPRVHUJ2E46NOYLLEAQ66BQL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U7TPRVHUJ2E46NOYLLEAQ66BQL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:U7TPRVHUJ2E46NOYLLEAQ66BQL","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":"4171db69a569b5b2fbdf8fe6164683b8ccf5fd43eb2fd9bb3dbd9217c6dbb9db","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-09-09T05:56:36Z","title_canon_sha256":"4d65ef7dc1ef8af6bd8f64e6cfc74037e7ffbafe680a701b2eb68c3835f243ef"},"schema_version":"1.0","source":{"id":"1709.02915","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.02915","created_at":"2026-05-18T00:29:28Z"},{"alias_kind":"arxiv_version","alias_value":"1709.02915v1","created_at":"2026-05-18T00:29:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.02915","created_at":"2026-05-18T00:29:28Z"},{"alias_kind":"pith_short_12","alias_value":"U7TPRVHUJ2E4","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"U7TPRVHUJ2E46NOY","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"U7TPRVHU","created_at":"2026-05-18T12:31:46Z"}],"graph_snapshots":[{"event_id":"sha256:f00c079cac4439cdff579cb8223ca429740f001f17b0ef11aa7fb7e57e7294c2","target":"graph","created_at":"2026-05-18T00:29:28Z","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 a second set of results from a wide-field photometric survey of the environs of Milky Way globular clusters. The clusters studied are NGC 1261, NGC 1851 and NGC 5824: all have data from DECam on the Blanco 4m telescope. NGC 5824 also has data from the Magellan Clay telescope with MegaCam. We confirm the existence of a large diffuse stellar envelope surrounding NGC 1851 of size at least 240 pc in radius. The radial density profile of the envelope follows a power-law decline with index $\\gamma = -1.5 \\pm 0.2$ and the projected shape is slightly elliptical. For NGC 5824 there is no str","authors_text":"A. D. Mackey, G. S. Da Costa, P. B. Kuzma","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-09-09T05:56:36Z","title":"The Outer Envelopes of Globular Clusters. II. NGC 1851, NGC 5824 and NGC 1261"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.02915","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":"sha256:00f0362f2615f624b40117dbee673c17ed69302106ac92aa6d5ccfad87f2ba01","target":"record","created_at":"2026-05-18T00:29:28Z","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":"4171db69a569b5b2fbdf8fe6164683b8ccf5fd43eb2fd9bb3dbd9217c6dbb9db","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-09-09T05:56:36Z","title_canon_sha256":"4d65ef7dc1ef8af6bd8f64e6cfc74037e7ffbafe680a701b2eb68c3835f243ef"},"schema_version":"1.0","source":{"id":"1709.02915","kind":"arxiv","version":1}},"canonical_sha256":"a7e6f8d4f44e89cf35d85ac8087bc182fd7ac842b40e28da181bf18a85e0484e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a7e6f8d4f44e89cf35d85ac8087bc182fd7ac842b40e28da181bf18a85e0484e","first_computed_at":"2026-05-18T00:29:28.913505Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:29:28.913505Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JtQ+21TVz1yyQ8/eALpiz3GPLjXolRCKsJ+1aNUp/Sw1OFlOjyH6nsVM2B3Ym5uqG3QsjuSM5wthc4ULyTEtCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:29:28.914449Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.02915","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:00f0362f2615f624b40117dbee673c17ed69302106ac92aa6d5ccfad87f2ba01","sha256:f00c079cac4439cdff579cb8223ca429740f001f17b0ef11aa7fb7e57e7294c2"],"state_sha256":"95f413f321ea67b2f7dbe627a6659803c5bc4f23b1a6c44e673c23adc7b6dd12"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1F2OTsDKhIBIMF4oD9/6flih8FCcittHQF4UDh3equCaBTp490xvzd5ZMzoPGiughHt/4afKCyzSFpvh9ZI/BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T14:24:09.732062Z","bundle_sha256":"be39772177841c3d4f4350e5264fe395d265fb620abcd70e3083914bc309cafc"}}