{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:LOBYR3IHVHVEHWAGAMMITTSNWH","short_pith_number":"pith:LOBYR3IH","schema_version":"1.0","canonical_sha256":"5b8388ed07a9ea43d806031889ce4db1d6415ca8e2237d2e98c6d6f68dc57149","source":{"kind":"arxiv","id":"1607.08860","version":1},"attestation_state":"computed","paper":{"title":"A Chandra X-ray study of the young star cluster NGC 6231: low-mass population and initial mass function","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"F. Damiani, G. Micela, S. Sciortino","submitted_at":"2016-07-29T16:05:20Z","abstract_excerpt":"NGC6231 is a massive young star cluster, near the center of the Sco OB1 association. While its OB members are well studied, its low-mass population has received little attention. We present high-spatial resolution Chandra ACIS-I X-ray data, where we detect 1613 point X-ray sources. Our main aim is to clarify global properties of NGC6231 down to low masses through a detailed membership assessment, and to study the cluster stars' spatial distribution, the origin of their X-ray emission, the cluster age and formation history, and initial mass function. We use X-ray data, complemented by optical/I"},"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":"1607.08860","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-07-29T16:05:20Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"ca98ff4088c05b6ca41582dbc53f947f7adb4d39f6ea16adfe5d293c2666c53f","abstract_canon_sha256":"ec284fffe3a4eb03b592f2c5628bb4cde9c7b95bcb1cb3f1e250497facbfa37d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:55:45.689237Z","signature_b64":"cZpDwmS6I3oQ/g5+sLALbkhtjjPfMHMB7b2kxnU5mkIzUGdSvmHfKxPE35e7gaWM3yCOp3/w4Oczi10lT6FRCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5b8388ed07a9ea43d806031889ce4db1d6415ca8e2237d2e98c6d6f68dc57149","last_reissued_at":"2026-05-18T00:55:45.688811Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:55:45.688811Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Chandra X-ray study of the young star cluster NGC 6231: low-mass population and initial mass function","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"F. Damiani, G. Micela, S. Sciortino","submitted_at":"2016-07-29T16:05:20Z","abstract_excerpt":"NGC6231 is a massive young star cluster, near the center of the Sco OB1 association. While its OB members are well studied, its low-mass population has received little attention. We present high-spatial resolution Chandra ACIS-I X-ray data, where we detect 1613 point X-ray sources. Our main aim is to clarify global properties of NGC6231 down to low masses through a detailed membership assessment, and to study the cluster stars' spatial distribution, the origin of their X-ray emission, the cluster age and formation history, and initial mass function. We use X-ray data, complemented by optical/I"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.08860","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1607.08860","created_at":"2026-05-18T00:55:45.688877+00:00"},{"alias_kind":"arxiv_version","alias_value":"1607.08860v1","created_at":"2026-05-18T00:55:45.688877+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.08860","created_at":"2026-05-18T00:55:45.688877+00:00"},{"alias_kind":"pith_short_12","alias_value":"LOBYR3IHVHVE","created_at":"2026-05-18T12:30:29.479603+00:00"},{"alias_kind":"pith_short_16","alias_value":"LOBYR3IHVHVEHWAG","created_at":"2026-05-18T12:30:29.479603+00:00"},{"alias_kind":"pith_short_8","alias_value":"LOBYR3IH","created_at":"2026-05-18T12:30:29.479603+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/LOBYR3IHVHVEHWAGAMMITTSNWH","json":"https://pith.science/pith/LOBYR3IHVHVEHWAGAMMITTSNWH.json","graph_json":"https://pith.science/api/pith-number/LOBYR3IHVHVEHWAGAMMITTSNWH/graph.json","events_json":"https://pith.science/api/pith-number/LOBYR3IHVHVEHWAGAMMITTSNWH/events.json","paper":"https://pith.science/paper/LOBYR3IH"},"agent_actions":{"view_html":"https://pith.science/pith/LOBYR3IHVHVEHWAGAMMITTSNWH","download_json":"https://pith.science/pith/LOBYR3IHVHVEHWAGAMMITTSNWH.json","view_paper":"https://pith.science/paper/LOBYR3IH","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1607.08860&json=true","fetch_graph":"https://pith.science/api/pith-number/LOBYR3IHVHVEHWAGAMMITTSNWH/graph.json","fetch_events":"https://pith.science/api/pith-number/LOBYR3IHVHVEHWAGAMMITTSNWH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LOBYR3IHVHVEHWAGAMMITTSNWH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LOBYR3IHVHVEHWAGAMMITTSNWH/action/storage_attestation","attest_author":"https://pith.science/pith/LOBYR3IHVHVEHWAGAMMITTSNWH/action/author_attestation","sign_citation":"https://pith.science/pith/LOBYR3IHVHVEHWAGAMMITTSNWH/action/citation_signature","submit_replication":"https://pith.science/pith/LOBYR3IHVHVEHWAGAMMITTSNWH/action/replication_record"}},"created_at":"2026-05-18T00:55:45.688877+00:00","updated_at":"2026-05-18T00:55:45.688877+00:00"}