{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2002:IKYDZE5UM24AUA7MVKYFDPA5LN","short_pith_number":"pith:IKYDZE5U","schema_version":"1.0","canonical_sha256":"42b03c93b466b80a03ecaab051bc1d5b5aab220cefc1435167c4e3c159a6b05a","source":{"kind":"arxiv","id":"astro-ph/0211307","version":1},"attestation_state":"computed","paper":{"title":"Hard X-ray observations of Extremely Red Objects","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"2) ((1) Dip. Astr., (2) INAF - OA Bologna), Marcella Brusa (1, Univ. di Bologna","submitted_at":"2002-11-14T17:09:14Z","abstract_excerpt":"Extremely Red Objects (EROs, R-K>5) constitute a heterogenous class of extragalactic sources including high redshift elliptical galaxies, dusty star-forming systems and heavily obscured AGNs. Hard X-ray observations provide an unique and powerful tool to uncover obscured nuclear or star-forming activity. We present the results of XMM-Newton observations of the largest sample of EROs available to date (about 450 objects over a contiguous area of 700 arcmin^2). Five of the 46 hard X-ray selected sources brighter than 3x10^{-15} cgs in the 2-10 keV band, are associated with EROs. All of the X-ray"},"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":"astro-ph/0211307","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-11-14T17:09:14Z","cross_cats_sorted":[],"title_canon_sha256":"c0f2558be042073e598ba3b147cc1240f7009a97ca814f56f2df1b10cc3d0bf5","abstract_canon_sha256":"71064a8041e27dffac28afa5f6977e7f1ddcc8f2faf123b8d65ca947fbded074"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:40.072922Z","signature_b64":"w6ydqAzkGtwkqKjU657sIStb48krA+zy9gpEW5QXQ3YG3gWoyxrf8aD1iOUdfkAopoqc3lWXsVN6msd2LlZBAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"42b03c93b466b80a03ecaab051bc1d5b5aab220cefc1435167c4e3c159a6b05a","last_reissued_at":"2026-05-18T01:40:40.072271Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:40.072271Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Hard X-ray observations of Extremely Red Objects","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"2) ((1) Dip. Astr., (2) INAF - OA Bologna), Marcella Brusa (1, Univ. di Bologna","submitted_at":"2002-11-14T17:09:14Z","abstract_excerpt":"Extremely Red Objects (EROs, R-K>5) constitute a heterogenous class of extragalactic sources including high redshift elliptical galaxies, dusty star-forming systems and heavily obscured AGNs. Hard X-ray observations provide an unique and powerful tool to uncover obscured nuclear or star-forming activity. We present the results of XMM-Newton observations of the largest sample of EROs available to date (about 450 objects over a contiguous area of 700 arcmin^2). Five of the 46 hard X-ray selected sources brighter than 3x10^{-15} cgs in the 2-10 keV band, are associated with EROs. All of the X-ray"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0211307","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":"astro-ph/0211307","created_at":"2026-05-18T01:40:40.072391+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0211307v1","created_at":"2026-05-18T01:40:40.072391+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0211307","created_at":"2026-05-18T01:40:40.072391+00:00"},{"alias_kind":"pith_short_12","alias_value":"IKYDZE5UM24A","created_at":"2026-05-18T12:25:50.845339+00:00"},{"alias_kind":"pith_short_16","alias_value":"IKYDZE5UM24AUA7M","created_at":"2026-05-18T12:25:50.845339+00:00"},{"alias_kind":"pith_short_8","alias_value":"IKYDZE5U","created_at":"2026-05-18T12:25:50.845339+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/IKYDZE5UM24AUA7MVKYFDPA5LN","json":"https://pith.science/pith/IKYDZE5UM24AUA7MVKYFDPA5LN.json","graph_json":"https://pith.science/api/pith-number/IKYDZE5UM24AUA7MVKYFDPA5LN/graph.json","events_json":"https://pith.science/api/pith-number/IKYDZE5UM24AUA7MVKYFDPA5LN/events.json","paper":"https://pith.science/paper/IKYDZE5U"},"agent_actions":{"view_html":"https://pith.science/pith/IKYDZE5UM24AUA7MVKYFDPA5LN","download_json":"https://pith.science/pith/IKYDZE5UM24AUA7MVKYFDPA5LN.json","view_paper":"https://pith.science/paper/IKYDZE5U","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0211307&json=true","fetch_graph":"https://pith.science/api/pith-number/IKYDZE5UM24AUA7MVKYFDPA5LN/graph.json","fetch_events":"https://pith.science/api/pith-number/IKYDZE5UM24AUA7MVKYFDPA5LN/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/IKYDZE5UM24AUA7MVKYFDPA5LN/action/timestamp_anchor","attest_storage":"https://pith.science/pith/IKYDZE5UM24AUA7MVKYFDPA5LN/action/storage_attestation","attest_author":"https://pith.science/pith/IKYDZE5UM24AUA7MVKYFDPA5LN/action/author_attestation","sign_citation":"https://pith.science/pith/IKYDZE5UM24AUA7MVKYFDPA5LN/action/citation_signature","submit_replication":"https://pith.science/pith/IKYDZE5UM24AUA7MVKYFDPA5LN/action/replication_record"}},"created_at":"2026-05-18T01:40:40.072391+00:00","updated_at":"2026-05-18T01:40:40.072391+00:00"}