{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:T5GXP7XT7BSVLJO3BUEGFR6G6J","short_pith_number":"pith:T5GXP7XT","schema_version":"1.0","canonical_sha256":"9f4d77fef3f86555a5db0d0862c7c6f25914e1fe36b79e2c8d6149b80d380ac9","source":{"kind":"arxiv","id":"1509.02186","version":1},"attestation_state":"computed","paper":{"title":"Induced nuclear activity in galaxy pairs with different morphologies (E+E), (E+S) and (S+S)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Ascensi\\'on del Olmo (2), Deborah Dultzin (1), Francisco J. Hern\\'andez-Ibarra (1), Jaime Perea (2), Jes\\'us Gonz\\'alez (1), Sandro Mendoza-Castrej\\'on (1), Theodoros Bitsakis (1) ((1) Instituto de Astronom\\'ia, UNAM (2) Instituto de Astrof\\'isica de Andalucia), Yair Krongold (1)","submitted_at":"2015-09-07T20:47:19Z","abstract_excerpt":"We analysed 385 galactic spectra from the Sloan Digital Sky Survey Data Release 7 (SDSS-DR7) that belong to the catalog of isolated pairs of galaxies by Karachentsev. The spectra corresponds to physical pairs of galaxies as defined by V $\\leq$ 1200 Km/s and a pair separation $\\leq$ 100 kpc. We search for the incidence of nuclear activity, both thermal (star-forming) and non-thermal -Active Galactic Nuclei (AGN). After a careful extraction of the nuclear spectra, we use diagnostic diagrams and find that the incidence of AGN activity is 48 \\% in the paired galaxies with emission lines and 40\\% f"},"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":"1509.02186","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-09-07T20:47:19Z","cross_cats_sorted":[],"title_canon_sha256":"2b95bbc2d39110c6e7634c6ab1f3fc9a4241698166037e49a5b04fff690218c4","abstract_canon_sha256":"df047fb008d3bfb26d4db86506f399dec3930f1cdd8ccb8cacfaca55df47404c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:18:43.251397Z","signature_b64":"O2Hl5fbVV1l2RkCaUPXFAyapopPcjRAv/wMeBrmfEJCcDe5XDYYMjCqjDxvkh4abxaavKNdT/kZoaLAvPL0WBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9f4d77fef3f86555a5db0d0862c7c6f25914e1fe36b79e2c8d6149b80d380ac9","last_reissued_at":"2026-05-18T01:18:43.250754Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:18:43.250754Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Induced nuclear activity in galaxy pairs with different morphologies (E+E), (E+S) and (S+S)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Ascensi\\'on del Olmo (2), Deborah Dultzin (1), Francisco J. Hern\\'andez-Ibarra (1), Jaime Perea (2), Jes\\'us Gonz\\'alez (1), Sandro Mendoza-Castrej\\'on (1), Theodoros Bitsakis (1) ((1) Instituto de Astronom\\'ia, UNAM (2) Instituto de Astrof\\'isica de Andalucia), Yair Krongold (1)","submitted_at":"2015-09-07T20:47:19Z","abstract_excerpt":"We analysed 385 galactic spectra from the Sloan Digital Sky Survey Data Release 7 (SDSS-DR7) that belong to the catalog of isolated pairs of galaxies by Karachentsev. The spectra corresponds to physical pairs of galaxies as defined by V $\\leq$ 1200 Km/s and a pair separation $\\leq$ 100 kpc. We search for the incidence of nuclear activity, both thermal (star-forming) and non-thermal -Active Galactic Nuclei (AGN). After a careful extraction of the nuclear spectra, we use diagnostic diagrams and find that the incidence of AGN activity is 48 \\% in the paired galaxies with emission lines and 40\\% f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.02186","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":"1509.02186","created_at":"2026-05-18T01:18:43.250848+00:00"},{"alias_kind":"arxiv_version","alias_value":"1509.02186v1","created_at":"2026-05-18T01:18:43.250848+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.02186","created_at":"2026-05-18T01:18:43.250848+00:00"},{"alias_kind":"pith_short_12","alias_value":"T5GXP7XT7BSV","created_at":"2026-05-18T12:29:42.218222+00:00"},{"alias_kind":"pith_short_16","alias_value":"T5GXP7XT7BSVLJO3","created_at":"2026-05-18T12:29:42.218222+00:00"},{"alias_kind":"pith_short_8","alias_value":"T5GXP7XT","created_at":"2026-05-18T12:29:42.218222+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/T5GXP7XT7BSVLJO3BUEGFR6G6J","json":"https://pith.science/pith/T5GXP7XT7BSVLJO3BUEGFR6G6J.json","graph_json":"https://pith.science/api/pith-number/T5GXP7XT7BSVLJO3BUEGFR6G6J/graph.json","events_json":"https://pith.science/api/pith-number/T5GXP7XT7BSVLJO3BUEGFR6G6J/events.json","paper":"https://pith.science/paper/T5GXP7XT"},"agent_actions":{"view_html":"https://pith.science/pith/T5GXP7XT7BSVLJO3BUEGFR6G6J","download_json":"https://pith.science/pith/T5GXP7XT7BSVLJO3BUEGFR6G6J.json","view_paper":"https://pith.science/paper/T5GXP7XT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1509.02186&json=true","fetch_graph":"https://pith.science/api/pith-number/T5GXP7XT7BSVLJO3BUEGFR6G6J/graph.json","fetch_events":"https://pith.science/api/pith-number/T5GXP7XT7BSVLJO3BUEGFR6G6J/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/T5GXP7XT7BSVLJO3BUEGFR6G6J/action/timestamp_anchor","attest_storage":"https://pith.science/pith/T5GXP7XT7BSVLJO3BUEGFR6G6J/action/storage_attestation","attest_author":"https://pith.science/pith/T5GXP7XT7BSVLJO3BUEGFR6G6J/action/author_attestation","sign_citation":"https://pith.science/pith/T5GXP7XT7BSVLJO3BUEGFR6G6J/action/citation_signature","submit_replication":"https://pith.science/pith/T5GXP7XT7BSVLJO3BUEGFR6G6J/action/replication_record"}},"created_at":"2026-05-18T01:18:43.250848+00:00","updated_at":"2026-05-18T01:18:43.250848+00:00"}