{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:FZBOUWJK2ITJJWUA4E2GQPWXRJ","short_pith_number":"pith:FZBOUWJK","canonical_record":{"source":{"id":"1009.3281","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-09-16T20:28:29Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"d77158ac0e4ff9f2077192698c46548224da74f559de5bc490807791d2d6cbd9","abstract_canon_sha256":"ff95d5eb4c18ad375f2f8147e71a9c20a950dce28c68a54a864f8cc42cb00ce0"},"schema_version":"1.0"},"canonical_sha256":"2e42ea592ad22694da80e134683ed78a7c59bde00dfe1616e6c6281d57f1b3bc","source":{"kind":"arxiv","id":"1009.3281","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1009.3281","created_at":"2026-05-18T02:05:27Z"},{"alias_kind":"arxiv_version","alias_value":"1009.3281v1","created_at":"2026-05-18T02:05:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1009.3281","created_at":"2026-05-18T02:05:27Z"},{"alias_kind":"pith_short_12","alias_value":"FZBOUWJK2ITJ","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"FZBOUWJK2ITJJWUA","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"FZBOUWJK","created_at":"2026-05-18T12:26:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:FZBOUWJK2ITJJWUA4E2GQPWXRJ","target":"record","payload":{"canonical_record":{"source":{"id":"1009.3281","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-09-16T20:28:29Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"d77158ac0e4ff9f2077192698c46548224da74f559de5bc490807791d2d6cbd9","abstract_canon_sha256":"ff95d5eb4c18ad375f2f8147e71a9c20a950dce28c68a54a864f8cc42cb00ce0"},"schema_version":"1.0"},"canonical_sha256":"2e42ea592ad22694da80e134683ed78a7c59bde00dfe1616e6c6281d57f1b3bc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:05:27.165604Z","signature_b64":"abIcMimtGCvLWDHb3Mh7BSIWvmd5lOCEviUZnldpc5Zx+scYB6xLa/ZzYStrilPuHVPQyN2mHIxH4M8/36kYAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2e42ea592ad22694da80e134683ed78a7c59bde00dfe1616e6c6281d57f1b3bc","last_reissued_at":"2026-05-18T02:05:27.164877Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:05:27.164877Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1009.3281","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":"2026-05-18T02:05:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tKL9D2fzEFVAU4f7Y0mIctKbzrKyFG4/N2Ns7Cq9IfTda54zfeH34P+0GcQNcr082wBHwYg3a3+lcSHfAEGQAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T05:29:32.527569Z"},"content_sha256":"2aff3426fbc021d6d16791264a94de190066f6a832cd0cab8e6a31073f0a58e9","schema_version":"1.0","event_id":"sha256:2aff3426fbc021d6d16791264a94de190066f6a832cd0cab8e6a31073f0a58e9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:FZBOUWJK2ITJJWUA4E2GQPWXRJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The dynamically hot stellar halo around NGC 3311: a small cluster-dominated central galaxy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"G. Ventimiglia, L. Coccato, M. Arnaboldi, O. Gerhard","submitted_at":"2010-09-16T20:28:29Z","abstract_excerpt":"An important open question is the relation between intracluster light and the halos of central galaxies in galaxy clusters. Here we report results from an on going project with the aim to characterize the dynamical state in the core of the Hydra I (Abell 1060) cluster around NGC 3311. Methods: We analyze deep long-slit absorption line spectra reaching out to ~25 kpc in the halo of NGC 3311. Results: We find a very steep increase in the velocity dispersion profile from a central sigma_0=150 km/s to sigma_out ~450 km/s at R ~ 12 kpc. Farther out, to ~25 kpc, sigma appears to be constant at this "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.3281","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":"2026-05-18T02:05:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UPxCboX5z0v+gMyhtWIyU5DANvXOgmvqXveojyku1tocvsAvnA7oB2+CVUyulBgIG80VknMPxl/aPiV/cjOuDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T05:29:32.528147Z"},"content_sha256":"a18ddd9b9af1ffe92d2504ae8e4889c74e68595a72e29f4b86aab07be1eeaa9b","schema_version":"1.0","event_id":"sha256:a18ddd9b9af1ffe92d2504ae8e4889c74e68595a72e29f4b86aab07be1eeaa9b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FZBOUWJK2ITJJWUA4E2GQPWXRJ/bundle.json","state_url":"https://pith.science/pith/FZBOUWJK2ITJJWUA4E2GQPWXRJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FZBOUWJK2ITJJWUA4E2GQPWXRJ/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":"2026-05-25T05:29:32Z","links":{"resolver":"https://pith.science/pith/FZBOUWJK2ITJJWUA4E2GQPWXRJ","bundle":"https://pith.science/pith/FZBOUWJK2ITJJWUA4E2GQPWXRJ/bundle.json","state":"https://pith.science/pith/FZBOUWJK2ITJJWUA4E2GQPWXRJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FZBOUWJK2ITJJWUA4E2GQPWXRJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:FZBOUWJK2ITJJWUA4E2GQPWXRJ","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":"ff95d5eb4c18ad375f2f8147e71a9c20a950dce28c68a54a864f8cc42cb00ce0","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-09-16T20:28:29Z","title_canon_sha256":"d77158ac0e4ff9f2077192698c46548224da74f559de5bc490807791d2d6cbd9"},"schema_version":"1.0","source":{"id":"1009.3281","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1009.3281","created_at":"2026-05-18T02:05:27Z"},{"alias_kind":"arxiv_version","alias_value":"1009.3281v1","created_at":"2026-05-18T02:05:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1009.3281","created_at":"2026-05-18T02:05:27Z"},{"alias_kind":"pith_short_12","alias_value":"FZBOUWJK2ITJ","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"FZBOUWJK2ITJJWUA","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"FZBOUWJK","created_at":"2026-05-18T12:26:07Z"}],"graph_snapshots":[{"event_id":"sha256:a18ddd9b9af1ffe92d2504ae8e4889c74e68595a72e29f4b86aab07be1eeaa9b","target":"graph","created_at":"2026-05-18T02:05:27Z","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":"An important open question is the relation between intracluster light and the halos of central galaxies in galaxy clusters. Here we report results from an on going project with the aim to characterize the dynamical state in the core of the Hydra I (Abell 1060) cluster around NGC 3311. Methods: We analyze deep long-slit absorption line spectra reaching out to ~25 kpc in the halo of NGC 3311. Results: We find a very steep increase in the velocity dispersion profile from a central sigma_0=150 km/s to sigma_out ~450 km/s at R ~ 12 kpc. Farther out, to ~25 kpc, sigma appears to be constant at this ","authors_text":"G. Ventimiglia, L. Coccato, M. Arnaboldi, O. Gerhard","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-09-16T20:28:29Z","title":"The dynamically hot stellar halo around NGC 3311: a small cluster-dominated central galaxy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.3281","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":"sha256:2aff3426fbc021d6d16791264a94de190066f6a832cd0cab8e6a31073f0a58e9","target":"record","created_at":"2026-05-18T02:05:27Z","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":"ff95d5eb4c18ad375f2f8147e71a9c20a950dce28c68a54a864f8cc42cb00ce0","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-09-16T20:28:29Z","title_canon_sha256":"d77158ac0e4ff9f2077192698c46548224da74f559de5bc490807791d2d6cbd9"},"schema_version":"1.0","source":{"id":"1009.3281","kind":"arxiv","version":1}},"canonical_sha256":"2e42ea592ad22694da80e134683ed78a7c59bde00dfe1616e6c6281d57f1b3bc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2e42ea592ad22694da80e134683ed78a7c59bde00dfe1616e6c6281d57f1b3bc","first_computed_at":"2026-05-18T02:05:27.164877Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:05:27.164877Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"abIcMimtGCvLWDHb3Mh7BSIWvmd5lOCEviUZnldpc5Zx+scYB6xLa/ZzYStrilPuHVPQyN2mHIxH4M8/36kYAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:05:27.165604Z","signed_message":"canonical_sha256_bytes"},"source_id":"1009.3281","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2aff3426fbc021d6d16791264a94de190066f6a832cd0cab8e6a31073f0a58e9","sha256:a18ddd9b9af1ffe92d2504ae8e4889c74e68595a72e29f4b86aab07be1eeaa9b"],"state_sha256":"7bc45655cd43bf92665eb16bd8bf4d69611dd066a95ac2af1feb39386c1006d1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xZ3PJ30oP2j1oLPMYODdRXdBM6lTkHGpjWEhR8UWcfzMh3sc3gUfhEVMSrZ/dCiQ0AfiEVfEFXd3FB2jO5b/AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T05:29:32.531101Z","bundle_sha256":"83f717fe31fdd549235cf3fdcc6c1ef2a695a0ec0dceadc79b6a8ee809536ad4"}}