{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:KKTQZU2M6PTIJXJOA73G4JMHLZ","short_pith_number":"pith:KKTQZU2M","schema_version":"1.0","canonical_sha256":"52a70cd34cf3e684dd2e07f66e25875e579e47acdf25ef3b37f99b4ed470e6ca","source":{"kind":"arxiv","id":"1408.1404","version":3},"attestation_state":"computed","paper":{"title":"Early Emission from the Type IIn Supernova 1998S at High Resolution","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Alexei V. Filippenko, Douglas C. Leonard, Isaac Shivvers, Jon C. Mauerhan, Jose H. Groh, Ori D. Fox","submitted_at":"2014-08-06T20:00:17Z","abstract_excerpt":"The well-studied Type IIn supernova (SN) 1998S is often dubbed the prototypical SN IIn, and it provides a unique opportunity to study its progenitor star from within as the SN lights up dense circumstellar material (CSM) launched from the progenitor. Here we present a Keck HIRES spectrum of SN 1998S taken within a few days after core collapse - both the earliest high-resolution ($\\Delta\\lambda < 1.0\\,\\AA$) spectrum published of a SN IIn and the earliest published spectrum of SN 1998S. Modern SN studies achieve impressively short turn-around times between SN detection and the first observed spe"},"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":"1408.1404","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-08-06T20:00:17Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"45fcb1f1f106631051a56fb504348827fcbf0c1a95bd0105661f0df6ffddd075","abstract_canon_sha256":"06e9a9f4b5f6cae3c6088f8b78ada265603cd45f3e2cfe6a6ed2390dd275c7c3"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:38:54.228308Z","signature_b64":"DCkN9P0HUAIpMxzyTSTCidWfrcPC9BZcxrnw1MQQiGwvtff1Pk4kJ2HxiYBCHl4UGXfLT40/QEN5DpMnTRmvDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"52a70cd34cf3e684dd2e07f66e25875e579e47acdf25ef3b37f99b4ed470e6ca","last_reissued_at":"2026-05-18T01:38:54.227588Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:38:54.227588Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Early Emission from the Type IIn Supernova 1998S at High Resolution","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Alexei V. Filippenko, Douglas C. Leonard, Isaac Shivvers, Jon C. Mauerhan, Jose H. Groh, Ori D. Fox","submitted_at":"2014-08-06T20:00:17Z","abstract_excerpt":"The well-studied Type IIn supernova (SN) 1998S is often dubbed the prototypical SN IIn, and it provides a unique opportunity to study its progenitor star from within as the SN lights up dense circumstellar material (CSM) launched from the progenitor. Here we present a Keck HIRES spectrum of SN 1998S taken within a few days after core collapse - both the earliest high-resolution ($\\Delta\\lambda < 1.0\\,\\AA$) spectrum published of a SN IIn and the earliest published spectrum of SN 1998S. Modern SN studies achieve impressively short turn-around times between SN detection and the first observed spe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.1404","kind":"arxiv","version":3},"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":"1408.1404","created_at":"2026-05-18T01:38:54.227718+00:00"},{"alias_kind":"arxiv_version","alias_value":"1408.1404v3","created_at":"2026-05-18T01:38:54.227718+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.1404","created_at":"2026-05-18T01:38:54.227718+00:00"},{"alias_kind":"pith_short_12","alias_value":"KKTQZU2M6PTI","created_at":"2026-05-18T12:28:35.611951+00:00"},{"alias_kind":"pith_short_16","alias_value":"KKTQZU2M6PTIJXJO","created_at":"2026-05-18T12:28:35.611951+00:00"},{"alias_kind":"pith_short_8","alias_value":"KKTQZU2M","created_at":"2026-05-18T12:28:35.611951+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":2,"internal_anchor_count":2,"sample":[{"citing_arxiv_id":"2606.30390","citing_title":"SN 2019vxm: A luminous and long-lived Type IIn supernova with early flash-ionisation features","ref_index":57,"is_internal_anchor":true},{"citing_arxiv_id":"2606.28561","citing_title":"JWST observations of SN 2024abup: First Detection of CO in a broad-lined Type Ic Supernova and Constraints on r-process Nucleosynthesis","ref_index":76,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/KKTQZU2M6PTIJXJOA73G4JMHLZ","json":"https://pith.science/pith/KKTQZU2M6PTIJXJOA73G4JMHLZ.json","graph_json":"https://pith.science/api/pith-number/KKTQZU2M6PTIJXJOA73G4JMHLZ/graph.json","events_json":"https://pith.science/api/pith-number/KKTQZU2M6PTIJXJOA73G4JMHLZ/events.json","paper":"https://pith.science/paper/KKTQZU2M"},"agent_actions":{"view_html":"https://pith.science/pith/KKTQZU2M6PTIJXJOA73G4JMHLZ","download_json":"https://pith.science/pith/KKTQZU2M6PTIJXJOA73G4JMHLZ.json","view_paper":"https://pith.science/paper/KKTQZU2M","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1408.1404&json=true","fetch_graph":"https://pith.science/api/pith-number/KKTQZU2M6PTIJXJOA73G4JMHLZ/graph.json","fetch_events":"https://pith.science/api/pith-number/KKTQZU2M6PTIJXJOA73G4JMHLZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/KKTQZU2M6PTIJXJOA73G4JMHLZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/KKTQZU2M6PTIJXJOA73G4JMHLZ/action/storage_attestation","attest_author":"https://pith.science/pith/KKTQZU2M6PTIJXJOA73G4JMHLZ/action/author_attestation","sign_citation":"https://pith.science/pith/KKTQZU2M6PTIJXJOA73G4JMHLZ/action/citation_signature","submit_replication":"https://pith.science/pith/KKTQZU2M6PTIJXJOA73G4JMHLZ/action/replication_record"}},"created_at":"2026-05-18T01:38:54.227718+00:00","updated_at":"2026-05-18T01:38:54.227718+00:00"}