{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:IMOIBN5EEXS57PMRLFP746UFKV","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":"11b4daae9a5c1c2a67a21f4c35d5856e6763135da42e21c36055b75e43ee6da6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-05-06T21:31:01Z","title_canon_sha256":"8f9f9071480a36769581ce288e54ab32053017b9b9aed4b9bf565bf54181f3d3"},"schema_version":"1.0","source":{"id":"1305.1335","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.1335","created_at":"2026-05-18T01:50:05Z"},{"alias_kind":"arxiv_version","alias_value":"1305.1335v1","created_at":"2026-05-18T01:50:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.1335","created_at":"2026-05-18T01:50:05Z"},{"alias_kind":"pith_short_12","alias_value":"IMOIBN5EEXS5","created_at":"2026-05-18T12:27:46Z"},{"alias_kind":"pith_short_16","alias_value":"IMOIBN5EEXS57PMR","created_at":"2026-05-18T12:27:46Z"},{"alias_kind":"pith_short_8","alias_value":"IMOIBN5E","created_at":"2026-05-18T12:27:46Z"}],"graph_snapshots":[{"event_id":"sha256:45ba0d75e8d18493feea6e26dd88b29cfd122de020fb3a9f8f24f84575cd3a64","target":"graph","created_at":"2026-05-18T01:50:05Z","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":"Context: There is strong evidence that globular cluster systems (GCSs) of massive galaxies are largely assembled by infall/accretion processes. Therefore, we expect the GCSs of isolated elliptical galaxies to be poor. Alhough not completely isolated, NGC 7507 is a massive field elliptical galaxy with an apparently very low dark matter content. Aims: We determine the richness, the colour distribution, and the structural properties of the GCS of NGC 7507. Methods: We perform wide-field Washington photometry with data obtained with the MOSAIC II camera at the 4m-Blanco telescope, CTIO. Results: T","authors_text":"(2) Departamento de Astronom\\'ia, (3) Finnish Centre for Astronomy with ESO, (4) Department of Physics, Argentina, A. Romanowsky (4) ((1) Facultad de Ciencias Astron\\'omicas y Geof\\'isicas de la Universidad Nacional de La Plata, Astronomy, Chile, Concepci\\'on, Consejo Nacional de Investigaciones Cient\\'ificas y T\\'ecnicas, Finland, Instituto de Astrof\\'isica de La Plata (CCT La Plata-CONICET-UNLP), J. P. Caso (1), L. P. Bassino (1), R. R. Lane (2), R. Salinas (3), San Jos\\'e, San Jos\\'e State University, T. Richtler (2), Universidad de Concepci\\'on, University of Turku, USA)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-05-06T21:31:01Z","title":"The paucity of globular clusters around the field elliptical NGC 7507"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.1335","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":"sha256:175b25e40a86a04787e79cbfbecd6165cc966ef98efb18d8f2d50d380056301c","target":"record","created_at":"2026-05-18T01:50:05Z","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":"11b4daae9a5c1c2a67a21f4c35d5856e6763135da42e21c36055b75e43ee6da6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-05-06T21:31:01Z","title_canon_sha256":"8f9f9071480a36769581ce288e54ab32053017b9b9aed4b9bf565bf54181f3d3"},"schema_version":"1.0","source":{"id":"1305.1335","kind":"arxiv","version":1}},"canonical_sha256":"431c80b7a425e5dfbd91595ffe7a85556462dbfcd5e2a00686bae191e29c7306","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"431c80b7a425e5dfbd91595ffe7a85556462dbfcd5e2a00686bae191e29c7306","first_computed_at":"2026-05-18T01:50:05.455655Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:50:05.455655Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IF5t4S0IQaRWQZi5WbXGyOqUJv64ZOk6TaCu48k+muhh6W1BTwYJH481E/ApDVWJoVFS3ZKqgs3lrhzcM5gDAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:50:05.456223Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.1335","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:175b25e40a86a04787e79cbfbecd6165cc966ef98efb18d8f2d50d380056301c","sha256:45ba0d75e8d18493feea6e26dd88b29cfd122de020fb3a9f8f24f84575cd3a64"],"state_sha256":"e7b8667e18a2e8646cf6ca3271162448f8d136d8eaa786ca685e1b4d9a301048"}