{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:DKXYXRX7R7FLM6CJCE7MPVYGOS","short_pith_number":"pith:DKXYXRX7","schema_version":"1.0","canonical_sha256":"1aaf8bc6ff8fcab67849113ec7d70674a0292d3f76150c7f2b881eabb547338b","source":{"kind":"arxiv","id":"1902.10088","version":2},"attestation_state":"computed","paper":{"title":"Carnegie Supernova Project-II: Using Near-Infrared Spectroscopy to determine the location of the outer $^{56}$Ni in Type Ia Supernovae","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"A. L. Piro, C. Ashall, C. Burns, C. Contreras, D. J. Sand, E. Baron, E. Y. Hsiao, F. Taddia, G. H. Marion, K. Krisciunas, L. Galbany, M. M. Phillips, M. Shahbandeh, M. Stritzinger, N. B. Suntzeff, N. Morrell, P. Hoeflich, R. P. Kirshner, S. Davis, S. Holmbo","submitted_at":"2019-02-26T18:04:56Z","abstract_excerpt":"We present the $H$-band wavelength region of thirty post-maximum light near-infrared (NIR) spectra of fourteen transitional and sub-luminous type Ia supernovae (SNe Ia), extending from $+$5d to +20d relative to the epoch of $B$-band maximum. We introduce a new observable, the blue-edge velocity, $v_{edge}$, of the prominent Fe/Co/Ni-peak $H$-band emission feature which is quantitatively measured. The $v_{edge}$ parameter is found to slowly decrease over sub-type ranging from around $-$13,000km/s for transitional SNe~Ia, down to $-$5,000km/s for the sub-luminous SNe Ia. Furthermore, inspection "},"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":"1902.10088","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-02-26T18:04:56Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"c9c911c81f7eda6603b1fe7469a6179c591f71829688718a8338c24a0cb7435c","abstract_canon_sha256":"31e5766cedf600da263858a024eeb4d9c3075ed246f2459e0c28f64129878987"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:47:57.966983Z","signature_b64":"yYhiRU5rcC2UQO8wOQrqNUVrBdNy5cmC6qIc8mwKugI7HNl+G6wVo/XUJwvMc59MgsxCpeks9quR2CXK/dllDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1aaf8bc6ff8fcab67849113ec7d70674a0292d3f76150c7f2b881eabb547338b","last_reissued_at":"2026-05-17T23:47:57.966546Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:47:57.966546Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Carnegie Supernova Project-II: Using Near-Infrared Spectroscopy to determine the location of the outer $^{56}$Ni in Type Ia Supernovae","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"A. L. Piro, C. Ashall, C. Burns, C. Contreras, D. J. Sand, E. Baron, E. Y. Hsiao, F. Taddia, G. H. Marion, K. Krisciunas, L. Galbany, M. M. Phillips, M. Shahbandeh, M. Stritzinger, N. B. Suntzeff, N. Morrell, P. Hoeflich, R. P. Kirshner, S. Davis, S. Holmbo","submitted_at":"2019-02-26T18:04:56Z","abstract_excerpt":"We present the $H$-band wavelength region of thirty post-maximum light near-infrared (NIR) spectra of fourteen transitional and sub-luminous type Ia supernovae (SNe Ia), extending from $+$5d to +20d relative to the epoch of $B$-band maximum. We introduce a new observable, the blue-edge velocity, $v_{edge}$, of the prominent Fe/Co/Ni-peak $H$-band emission feature which is quantitatively measured. The $v_{edge}$ parameter is found to slowly decrease over sub-type ranging from around $-$13,000km/s for transitional SNe~Ia, down to $-$5,000km/s for the sub-luminous SNe Ia. Furthermore, inspection "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.10088","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":"1902.10088","created_at":"2026-05-17T23:47:57.966611+00:00"},{"alias_kind":"arxiv_version","alias_value":"1902.10088v2","created_at":"2026-05-17T23:47:57.966611+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.10088","created_at":"2026-05-17T23:47:57.966611+00:00"},{"alias_kind":"pith_short_12","alias_value":"DKXYXRX7R7FL","created_at":"2026-05-18T12:33:15.570797+00:00"},{"alias_kind":"pith_short_16","alias_value":"DKXYXRX7R7FLM6CJ","created_at":"2026-05-18T12:33:15.570797+00:00"},{"alias_kind":"pith_short_8","alias_value":"DKXYXRX7","created_at":"2026-05-18T12:33:15.570797+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/DKXYXRX7R7FLM6CJCE7MPVYGOS","json":"https://pith.science/pith/DKXYXRX7R7FLM6CJCE7MPVYGOS.json","graph_json":"https://pith.science/api/pith-number/DKXYXRX7R7FLM6CJCE7MPVYGOS/graph.json","events_json":"https://pith.science/api/pith-number/DKXYXRX7R7FLM6CJCE7MPVYGOS/events.json","paper":"https://pith.science/paper/DKXYXRX7"},"agent_actions":{"view_html":"https://pith.science/pith/DKXYXRX7R7FLM6CJCE7MPVYGOS","download_json":"https://pith.science/pith/DKXYXRX7R7FLM6CJCE7MPVYGOS.json","view_paper":"https://pith.science/paper/DKXYXRX7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1902.10088&json=true","fetch_graph":"https://pith.science/api/pith-number/DKXYXRX7R7FLM6CJCE7MPVYGOS/graph.json","fetch_events":"https://pith.science/api/pith-number/DKXYXRX7R7FLM6CJCE7MPVYGOS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/DKXYXRX7R7FLM6CJCE7MPVYGOS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/DKXYXRX7R7FLM6CJCE7MPVYGOS/action/storage_attestation","attest_author":"https://pith.science/pith/DKXYXRX7R7FLM6CJCE7MPVYGOS/action/author_attestation","sign_citation":"https://pith.science/pith/DKXYXRX7R7FLM6CJCE7MPVYGOS/action/citation_signature","submit_replication":"https://pith.science/pith/DKXYXRX7R7FLM6CJCE7MPVYGOS/action/replication_record"}},"created_at":"2026-05-17T23:47:57.966611+00:00","updated_at":"2026-05-17T23:47:57.966611+00:00"}