{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:4WRXIVMLUKAJXNWWRJXGYTU2N5","short_pith_number":"pith:4WRXIVML","schema_version":"1.0","canonical_sha256":"e5a374558ba2809bb6d68a6e6c4e9a6f6e058b80604da81109bf8dbf31899f60","source":{"kind":"arxiv","id":"1007.2806","version":2},"attestation_state":"computed","paper":{"title":"The Tidal Tails of the Ultra-Faint Globular Cluster Palomar 1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"M. Gieles, M.J. Irwin, M.Niederste-Ostholt, N.W. Evans, S. Koposov, V. Belokurov","submitted_at":"2010-07-16T16:23:55Z","abstract_excerpt":"Using the Optimal Filter Technique applied to Sloan Digital Sky Survey photometry, we have found extended tails stretching about 1 degree (or several tens of half-light radii) from either side of the ultra-faint globular cluster Palomar 1. The tails contain roughly as many stars as does the cluster itself. Using deeper Hubble Space Telescope data, we see that the isophotes twist in a chacteristic S-shape on moving outwards from the cluster centre to the tails. We argue that the main mechanism forming the tails may be relaxation driven evaporation and that Pal 1 may have been accreted from a no"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1007.2806","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-07-16T16:23:55Z","cross_cats_sorted":[],"title_canon_sha256":"9a80e6d26ed7750dac682dd1cd37564bf4f564d6fc5b0d3ee08b3ae104947685","abstract_canon_sha256":"d87a13771e181280663bdab041f2b01214bdc9c3c86474d49270962bd19af582"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:06:21.191223Z","signature_b64":"khOOwLebWG2AHDs/rD7qX/jPrUy1sySrUE2TVKSkuAyoA9OIdDhQkPveL/MHltrvHWrwnErFbhntC5ZNv47QAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e5a374558ba2809bb6d68a6e6c4e9a6f6e058b80604da81109bf8dbf31899f60","last_reissued_at":"2026-05-18T02:06:21.190603Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:06:21.190603Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Tidal Tails of the Ultra-Faint Globular Cluster Palomar 1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"M. Gieles, M.J. Irwin, M.Niederste-Ostholt, N.W. Evans, S. Koposov, V. Belokurov","submitted_at":"2010-07-16T16:23:55Z","abstract_excerpt":"Using the Optimal Filter Technique applied to Sloan Digital Sky Survey photometry, we have found extended tails stretching about 1 degree (or several tens of half-light radii) from either side of the ultra-faint globular cluster Palomar 1. The tails contain roughly as many stars as does the cluster itself. Using deeper Hubble Space Telescope data, we see that the isophotes twist in a chacteristic S-shape on moving outwards from the cluster centre to the tails. We argue that the main mechanism forming the tails may be relaxation driven evaporation and that Pal 1 may have been accreted from a no"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.2806","kind":"arxiv","version":2},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1007.2806","created_at":"2026-05-18T02:06:21.190685+00:00"},{"alias_kind":"arxiv_version","alias_value":"1007.2806v2","created_at":"2026-05-18T02:06:21.190685+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.2806","created_at":"2026-05-18T02:06:21.190685+00:00"},{"alias_kind":"pith_short_12","alias_value":"4WRXIVMLUKAJ","created_at":"2026-05-18T12:26:04.259169+00:00"},{"alias_kind":"pith_short_16","alias_value":"4WRXIVMLUKAJXNWW","created_at":"2026-05-18T12:26:04.259169+00:00"},{"alias_kind":"pith_short_8","alias_value":"4WRXIVML","created_at":"2026-05-18T12:26:04.259169+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/4WRXIVMLUKAJXNWWRJXGYTU2N5","json":"https://pith.science/pith/4WRXIVMLUKAJXNWWRJXGYTU2N5.json","graph_json":"https://pith.science/api/pith-number/4WRXIVMLUKAJXNWWRJXGYTU2N5/graph.json","events_json":"https://pith.science/api/pith-number/4WRXIVMLUKAJXNWWRJXGYTU2N5/events.json","paper":"https://pith.science/paper/4WRXIVML"},"agent_actions":{"view_html":"https://pith.science/pith/4WRXIVMLUKAJXNWWRJXGYTU2N5","download_json":"https://pith.science/pith/4WRXIVMLUKAJXNWWRJXGYTU2N5.json","view_paper":"https://pith.science/paper/4WRXIVML","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1007.2806&json=true","fetch_graph":"https://pith.science/api/pith-number/4WRXIVMLUKAJXNWWRJXGYTU2N5/graph.json","fetch_events":"https://pith.science/api/pith-number/4WRXIVMLUKAJXNWWRJXGYTU2N5/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4WRXIVMLUKAJXNWWRJXGYTU2N5/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4WRXIVMLUKAJXNWWRJXGYTU2N5/action/storage_attestation","attest_author":"https://pith.science/pith/4WRXIVMLUKAJXNWWRJXGYTU2N5/action/author_attestation","sign_citation":"https://pith.science/pith/4WRXIVMLUKAJXNWWRJXGYTU2N5/action/citation_signature","submit_replication":"https://pith.science/pith/4WRXIVMLUKAJXNWWRJXGYTU2N5/action/replication_record"}},"created_at":"2026-05-18T02:06:21.190685+00:00","updated_at":"2026-05-18T02:06:21.190685+00:00"}