{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:UH27LULPSDDUIUAHSJ74YZGTV2","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":"4d66d8bf25ec4d33e1d2e94baeb23d7b7483736e8b23f35e11dc9837dd494432","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-09-07T20:00:01Z","title_canon_sha256":"ccf9029ce4abffe4b114d1f28d669460e8cdde07b0b87ef94c452d2703697667"},"schema_version":"1.0","source":{"id":"1609.02152","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.02152","created_at":"2026-05-18T00:57:10Z"},{"alias_kind":"arxiv_version","alias_value":"1609.02152v1","created_at":"2026-05-18T00:57:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.02152","created_at":"2026-05-18T00:57:10Z"},{"alias_kind":"pith_short_12","alias_value":"UH27LULPSDDU","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"UH27LULPSDDUIUAH","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"UH27LULP","created_at":"2026-05-18T12:30:46Z"}],"graph_snapshots":[{"event_id":"sha256:78929fe06a69f494ffd42d0f2a325a2191971e3593936949e4ad63a506f1d0e1","target":"graph","created_at":"2026-05-18T00:57:10Z","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":"We used ultra-deep $J$ and $K_s$ images secured with the near-infrared GSAOI camera assisted by the multi-conjugate adaptive optics system GeMS at the GEMINI South Telescope in Chile, to obtain a ($K_s$, $J-K_s$) color-magnitude diagram (CMD) for the bulge globular cluster NGC 6624. We obtained the deepest and most accurate near-infrared CMD from the ground for this cluster, by reaching $K_s$ $\\sim$ 21.5, approximately 8 magnitudes below the horizontal branch level. The entire extension of the Main Sequence (MS) is nicely sampled and at $K_s$ $\\sim$ 20 we detected the so-called MS \"knee\" in a ","authors_text":"B. Lanzoni, C. Moni Bidin, D. Geisler, E. Dalessandro, F. Mauro, F. R. Ferraro, L. Origlia, P. Miocchi, R. E. Cohen, S. Saracino, S. Villanova","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-09-07T20:00:01Z","title":"Ultra-deep GEMINI near-infrared observations of the bulge globular cluster NGC 6624"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.02152","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":"sha256:27d21ac9c0cd2f9dbc5be0f35f63aaab11a3ed6d54c39fc6d23fd2057c018a6d","target":"record","created_at":"2026-05-18T00:57:10Z","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":"4d66d8bf25ec4d33e1d2e94baeb23d7b7483736e8b23f35e11dc9837dd494432","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-09-07T20:00:01Z","title_canon_sha256":"ccf9029ce4abffe4b114d1f28d669460e8cdde07b0b87ef94c452d2703697667"},"schema_version":"1.0","source":{"id":"1609.02152","kind":"arxiv","version":1}},"canonical_sha256":"a1f5f5d16f90c7445007927fcc64d3ae837277121a1e255f95e881125a33997b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a1f5f5d16f90c7445007927fcc64d3ae837277121a1e255f95e881125a33997b","first_computed_at":"2026-05-18T00:57:10.770173Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:57:10.770173Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RgIZkOY+maOnEqceGXYC1ysFRYXh14PPR89cWz6MkhNpZRR6XVXbxea3f+AW3wCVbmB8/7QjdAsiTK6K/BrfDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:57:10.770555Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.02152","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:27d21ac9c0cd2f9dbc5be0f35f63aaab11a3ed6d54c39fc6d23fd2057c018a6d","sha256:78929fe06a69f494ffd42d0f2a325a2191971e3593936949e4ad63a506f1d0e1"],"state_sha256":"c1c41f918e69da3eb7e7df8da6deeca29681eae1afe245451fddee6ee564fac0"}