{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:XJPNWL7NAKTUXZNVB6TT4ILMH5","short_pith_number":"pith:XJPNWL7N","schema_version":"1.0","canonical_sha256":"ba5edb2fed02a74be5b50fa73e216c3f75f57d74665cc2675cae4204d76ffcab","source":{"kind":"arxiv","id":"1610.07601","version":2},"attestation_state":"computed","paper":{"title":"Strong Evidence Against A Non-Degenerate Companion in SN 2012cg","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. L. Piro, B. J. Shappee, K. Z. Stanek, R. A. Margutti, R. W. Pogge, S. G. Patel, V. M. Lipunov","submitted_at":"2016-10-24T20:00:00Z","abstract_excerpt":"Even though SN 2012cg is one of the best-studied Type Ia Supernovae to date, the nature of its progenitor system has been debated in numerous studies. Specifically, it is difficult to reconcile recent claims of the detection of a $\\sim 6 \\rm{M}_\\odot$ main-sequence companion with recent deep, late-time H$\\alpha{}$ flux limits. In this study we add three new constraints: 1) We analyze new high-signal-to-noise, nebular-phase, LBT/MODS spectrum of SN 2012cg and place an upper limit on the amount of low-velocity, solar-abundance material removed from a possible companion of $ < 7.8 \\times 10^{-3} "},"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":"1610.07601","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-10-24T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"ba79309fd6dc1fd9dafb179464d10204ae7a9e15716b8bf0b6b5aa2b16eb0bd9","abstract_canon_sha256":"4a943a02c35c3fc8ff82e9b6b44b328a7e940d43a9a09cb51d3d86514610522e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:18:20.674950Z","signature_b64":"WkhrsldgU5PAXwgDcrGmAfQ9lJHPVLMTviQfOHPBXCwGUcVYFd5pk9eQBYogYjOsaxvuDic7Jnp/PB8dp+d1AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ba5edb2fed02a74be5b50fa73e216c3f75f57d74665cc2675cae4204d76ffcab","last_reissued_at":"2026-05-18T00:18:20.674399Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:18:20.674399Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Strong Evidence Against A Non-Degenerate Companion in SN 2012cg","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. L. Piro, B. J. Shappee, K. Z. Stanek, R. A. Margutti, R. W. Pogge, S. G. Patel, V. M. Lipunov","submitted_at":"2016-10-24T20:00:00Z","abstract_excerpt":"Even though SN 2012cg is one of the best-studied Type Ia Supernovae to date, the nature of its progenitor system has been debated in numerous studies. Specifically, it is difficult to reconcile recent claims of the detection of a $\\sim 6 \\rm{M}_\\odot$ main-sequence companion with recent deep, late-time H$\\alpha{}$ flux limits. In this study we add three new constraints: 1) We analyze new high-signal-to-noise, nebular-phase, LBT/MODS spectrum of SN 2012cg and place an upper limit on the amount of low-velocity, solar-abundance material removed from a possible companion of $ < 7.8 \\times 10^{-3} "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.07601","kind":"arxiv","version":2},"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":"1610.07601","created_at":"2026-05-18T00:18:20.674481+00:00"},{"alias_kind":"arxiv_version","alias_value":"1610.07601v2","created_at":"2026-05-18T00:18:20.674481+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.07601","created_at":"2026-05-18T00:18:20.674481+00:00"},{"alias_kind":"pith_short_12","alias_value":"XJPNWL7NAKTU","created_at":"2026-05-18T12:30:51.357362+00:00"},{"alias_kind":"pith_short_16","alias_value":"XJPNWL7NAKTUXZNV","created_at":"2026-05-18T12:30:51.357362+00:00"},{"alias_kind":"pith_short_8","alias_value":"XJPNWL7N","created_at":"2026-05-18T12:30:51.357362+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/XJPNWL7NAKTUXZNVB6TT4ILMH5","json":"https://pith.science/pith/XJPNWL7NAKTUXZNVB6TT4ILMH5.json","graph_json":"https://pith.science/api/pith-number/XJPNWL7NAKTUXZNVB6TT4ILMH5/graph.json","events_json":"https://pith.science/api/pith-number/XJPNWL7NAKTUXZNVB6TT4ILMH5/events.json","paper":"https://pith.science/paper/XJPNWL7N"},"agent_actions":{"view_html":"https://pith.science/pith/XJPNWL7NAKTUXZNVB6TT4ILMH5","download_json":"https://pith.science/pith/XJPNWL7NAKTUXZNVB6TT4ILMH5.json","view_paper":"https://pith.science/paper/XJPNWL7N","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1610.07601&json=true","fetch_graph":"https://pith.science/api/pith-number/XJPNWL7NAKTUXZNVB6TT4ILMH5/graph.json","fetch_events":"https://pith.science/api/pith-number/XJPNWL7NAKTUXZNVB6TT4ILMH5/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/XJPNWL7NAKTUXZNVB6TT4ILMH5/action/timestamp_anchor","attest_storage":"https://pith.science/pith/XJPNWL7NAKTUXZNVB6TT4ILMH5/action/storage_attestation","attest_author":"https://pith.science/pith/XJPNWL7NAKTUXZNVB6TT4ILMH5/action/author_attestation","sign_citation":"https://pith.science/pith/XJPNWL7NAKTUXZNVB6TT4ILMH5/action/citation_signature","submit_replication":"https://pith.science/pith/XJPNWL7NAKTUXZNVB6TT4ILMH5/action/replication_record"}},"created_at":"2026-05-18T00:18:20.674481+00:00","updated_at":"2026-05-18T00:18:20.674481+00:00"}