{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:OYAMSS4UTLVLNZBHEPD5UQPIEX","short_pith_number":"pith:OYAMSS4U","schema_version":"1.0","canonical_sha256":"7600c94b949aeab6e42723c7da41e825d51ee89b0f9be4b3eef4f1bb95758052","source":{"kind":"arxiv","id":"1804.05067","version":1},"attestation_state":"computed","paper":{"title":"Chandra Detection of An Evolved Population of Young Stars in Serpens South","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Elaine M. Winston, Robert Gutermuth, Scott J. Wolk, Tyler L. Bourke","submitted_at":"2018-04-13T18:00:01Z","abstract_excerpt":"We present a Chandra study of the deeply embedded Serpens South star-forming region, examining cluster structure and disk properties at the earliest stages. In total, 152 X-ray sources are detected. Combined with Spitzer and 2MASS photometry, 66 X-ray sources are reliably matched to an IR counterpart. We identify 21 class I, 6 flat spectrum, 16 class II, and 18 class III young stars; 5 were unclassified. Eighteen sources were variable in X-rays, 8 exhibiting flare-like emission, and one periodic source. The cluster X-ray luminosity distance was estimated, the best match was to the nearer dista"},"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":"1804.05067","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-04-13T18:00:01Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"aa08b20634ab52edce652ea5d24df474901e0b236417f153c4430769e9861df7","abstract_canon_sha256":"aa6000bd426aeaeb558a7ea062d072579ed30cc8b7ecb42a37d70c56c4ae611c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:15:14.554639Z","signature_b64":"vSTwfrAb5mnXLYjfssLj1kPvsb99s8qx2UAgtg0Hqaibvm0LkC7Eg7RNxa4j3D27jPQZkk/c28+2fd8BlDajBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7600c94b949aeab6e42723c7da41e825d51ee89b0f9be4b3eef4f1bb95758052","last_reissued_at":"2026-05-18T00:15:14.554040Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:15:14.554040Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Chandra Detection of An Evolved Population of Young Stars in Serpens South","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Elaine M. Winston, Robert Gutermuth, Scott J. Wolk, Tyler L. Bourke","submitted_at":"2018-04-13T18:00:01Z","abstract_excerpt":"We present a Chandra study of the deeply embedded Serpens South star-forming region, examining cluster structure and disk properties at the earliest stages. In total, 152 X-ray sources are detected. Combined with Spitzer and 2MASS photometry, 66 X-ray sources are reliably matched to an IR counterpart. We identify 21 class I, 6 flat spectrum, 16 class II, and 18 class III young stars; 5 were unclassified. Eighteen sources were variable in X-rays, 8 exhibiting flare-like emission, and one periodic source. The cluster X-ray luminosity distance was estimated, the best match was to the nearer dista"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.05067","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":"1804.05067","created_at":"2026-05-18T00:15:14.554136+00:00"},{"alias_kind":"arxiv_version","alias_value":"1804.05067v1","created_at":"2026-05-18T00:15:14.554136+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.05067","created_at":"2026-05-18T00:15:14.554136+00:00"},{"alias_kind":"pith_short_12","alias_value":"OYAMSS4UTLVL","created_at":"2026-05-18T12:32:43.782077+00:00"},{"alias_kind":"pith_short_16","alias_value":"OYAMSS4UTLVLNZBH","created_at":"2026-05-18T12:32:43.782077+00:00"},{"alias_kind":"pith_short_8","alias_value":"OYAMSS4U","created_at":"2026-05-18T12:32:43.782077+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/OYAMSS4UTLVLNZBHEPD5UQPIEX","json":"https://pith.science/pith/OYAMSS4UTLVLNZBHEPD5UQPIEX.json","graph_json":"https://pith.science/api/pith-number/OYAMSS4UTLVLNZBHEPD5UQPIEX/graph.json","events_json":"https://pith.science/api/pith-number/OYAMSS4UTLVLNZBHEPD5UQPIEX/events.json","paper":"https://pith.science/paper/OYAMSS4U"},"agent_actions":{"view_html":"https://pith.science/pith/OYAMSS4UTLVLNZBHEPD5UQPIEX","download_json":"https://pith.science/pith/OYAMSS4UTLVLNZBHEPD5UQPIEX.json","view_paper":"https://pith.science/paper/OYAMSS4U","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1804.05067&json=true","fetch_graph":"https://pith.science/api/pith-number/OYAMSS4UTLVLNZBHEPD5UQPIEX/graph.json","fetch_events":"https://pith.science/api/pith-number/OYAMSS4UTLVLNZBHEPD5UQPIEX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/OYAMSS4UTLVLNZBHEPD5UQPIEX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/OYAMSS4UTLVLNZBHEPD5UQPIEX/action/storage_attestation","attest_author":"https://pith.science/pith/OYAMSS4UTLVLNZBHEPD5UQPIEX/action/author_attestation","sign_citation":"https://pith.science/pith/OYAMSS4UTLVLNZBHEPD5UQPIEX/action/citation_signature","submit_replication":"https://pith.science/pith/OYAMSS4UTLVLNZBHEPD5UQPIEX/action/replication_record"}},"created_at":"2026-05-18T00:15:14.554136+00:00","updated_at":"2026-05-18T00:15:14.554136+00:00"}