{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2000:BQ2MC563TEIFZDWPCSGSAP6QEZ","short_pith_number":"pith:BQ2MC563","schema_version":"1.0","canonical_sha256":"0c34c177db99105c8ecf148d203fd0264a2dfa1e994cdf954bb2bfb1561d38a1","source":{"kind":"arxiv","id":"astro-ph/0004228","version":1},"attestation_state":"computed","paper":{"title":"EROs in the EIS Fields. I: The AXAF (Chandra) Deep Field","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"2) D. Silva (1) ((1) European Southern Observatory, (2) Istituto di Fisica Cosmica \"G. Occhialini\"), M. Scodeggio (1","submitted_at":"2000-04-17T13:27:30Z","abstract_excerpt":"The publicly available EIS-DEEP optical-NIR data for the AXAF (Chandra) Deep Field have been used to construct samples of Extremely Red Objects (EROs) using various single-band and multi-band color criteria. In this work we define as EROs objects with colors consistent with passively evolving elliptical galaxies at z $\\geq$ 1. The EROs surface densities we derive are intermediate between previous published values, emphasizing again the need for larger survey areas to constrain the effects of possible large-scale structure. Although various single-color selected samples can be derived, the EROs"},"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/0004228","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-04-17T13:27:30Z","cross_cats_sorted":[],"title_canon_sha256":"37e733b3ac97405b91070b3cd5a50c68d48e6644c81733f2e0947883fa3795ce","abstract_canon_sha256":"fc3ba4c4077a2bdaad9422db964a333a339914d17b867c1e06dfefaaf79cb4c5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:10:17.882094Z","signature_b64":"rd7JR28Oy0ADuR3ELsCmwOhRb9HZQoUDoSZs4lGToHimxYIDFoy7P0en2Wio/tB4T8MTJtXmsmWhIRtpiH75BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0c34c177db99105c8ecf148d203fd0264a2dfa1e994cdf954bb2bfb1561d38a1","last_reissued_at":"2026-07-04T14:10:17.881742Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:10:17.881742Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"EROs in the EIS Fields. I: The AXAF (Chandra) Deep Field","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"2) D. Silva (1) ((1) European Southern Observatory, (2) Istituto di Fisica Cosmica \"G. Occhialini\"), M. Scodeggio (1","submitted_at":"2000-04-17T13:27:30Z","abstract_excerpt":"The publicly available EIS-DEEP optical-NIR data for the AXAF (Chandra) Deep Field have been used to construct samples of Extremely Red Objects (EROs) using various single-band and multi-band color criteria. In this work we define as EROs objects with colors consistent with passively evolving elliptical galaxies at z $\\geq$ 1. The EROs surface densities we derive are intermediate between previous published values, emphasizing again the need for larger survey areas to constrain the effects of possible large-scale structure. Although various single-color selected samples can be derived, the EROs"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0004228","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0004228/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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/0004228","created_at":"2026-07-04T14:10:17.881799+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0004228v1","created_at":"2026-07-04T14:10:17.881799+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0004228","created_at":"2026-07-04T14:10:17.881799+00:00"},{"alias_kind":"pith_short_12","alias_value":"BQ2MC563TEIF","created_at":"2026-07-04T14:10:17.881799+00:00"},{"alias_kind":"pith_short_16","alias_value":"BQ2MC563TEIFZDWP","created_at":"2026-07-04T14:10:17.881799+00:00"},{"alias_kind":"pith_short_8","alias_value":"BQ2MC563","created_at":"2026-07-04T14:10:17.881799+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2502.05751","citing_title":"On The Very Bright Dropouts Selected Using the James Webb Space Telescope NIRCam Instrument","ref_index":42,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/BQ2MC563TEIFZDWPCSGSAP6QEZ","json":"https://pith.science/pith/BQ2MC563TEIFZDWPCSGSAP6QEZ.json","graph_json":"https://pith.science/api/pith-number/BQ2MC563TEIFZDWPCSGSAP6QEZ/graph.json","events_json":"https://pith.science/api/pith-number/BQ2MC563TEIFZDWPCSGSAP6QEZ/events.json","paper":"https://pith.science/paper/BQ2MC563"},"agent_actions":{"view_html":"https://pith.science/pith/BQ2MC563TEIFZDWPCSGSAP6QEZ","download_json":"https://pith.science/pith/BQ2MC563TEIFZDWPCSGSAP6QEZ.json","view_paper":"https://pith.science/paper/BQ2MC563","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0004228&json=true","fetch_graph":"https://pith.science/api/pith-number/BQ2MC563TEIFZDWPCSGSAP6QEZ/graph.json","fetch_events":"https://pith.science/api/pith-number/BQ2MC563TEIFZDWPCSGSAP6QEZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/BQ2MC563TEIFZDWPCSGSAP6QEZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/BQ2MC563TEIFZDWPCSGSAP6QEZ/action/storage_attestation","attest_author":"https://pith.science/pith/BQ2MC563TEIFZDWPCSGSAP6QEZ/action/author_attestation","sign_citation":"https://pith.science/pith/BQ2MC563TEIFZDWPCSGSAP6QEZ/action/citation_signature","submit_replication":"https://pith.science/pith/BQ2MC563TEIFZDWPCSGSAP6QEZ/action/replication_record"}},"created_at":"2026-07-04T14:10:17.881799+00:00","updated_at":"2026-07-04T14:10:17.881799+00:00"}