{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:WQDGDL4F7INRSLPWOIIJ7ESNL6","short_pith_number":"pith:WQDGDL4F","schema_version":"1.0","canonical_sha256":"b40661af85fa1b192df672109f924d5f80d1b20ee7ad9250c2d19149b1a36b28","source":{"kind":"arxiv","id":"1506.00938","version":1},"attestation_state":"computed","paper":{"title":"Time series of high resolution spectra of SN 2014J observed with the TIGRE telescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"A. Hempelmann, D. Jack, G. Rauw, J. H. M. M. Schmitt, J. M. Cabrera Sixto, J. N. Gonzalez-Perez, K.-P. Schroder, M. A. Trinidad, M. Mittag","submitted_at":"2015-06-02T16:10:16Z","abstract_excerpt":"We present a time series of high resolution spectra of the Type Ia supernova 2014J, which exploded in the nearby galaxy M82. The spectra were obtained with the HEROS echelle spectrograph installed at the 1.2 m TIGRE telescope. We present a series of 33 spectra with a resolution of R = 20, 000, which covers the important bright phases in the evolution of SN 2014J during the period from January 24 to April 1 of 2014. The spectral evolution of SN 2014J is derived empirically. The expansion velocities of the Si II P-Cygni features were measured and show the expected decreasing behaviour, beginning"},"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":"1506.00938","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-06-02T16:10:16Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"32dfcc4fdfbd2e4a1fc1aa27827620944779fb13f066b8f60f46288e42e7872a","abstract_canon_sha256":"69c28deb0d66732818099e2f776d1a115e1f51eef3f9e94e7241cf3c0479efb7"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:59:34.048692Z","signature_b64":"/4MQAmVWujm54Wa9d1JiJKKmiLnzn/wI2gkx7yOAPzweAjBhKbKos/WdEPGveaQ+d1Nn+o74pLnR4Ph6rXM0Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b40661af85fa1b192df672109f924d5f80d1b20ee7ad9250c2d19149b1a36b28","last_reissued_at":"2026-05-18T01:59:34.048131Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:59:34.048131Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Time series of high resolution spectra of SN 2014J observed with the TIGRE telescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"A. Hempelmann, D. Jack, G. Rauw, J. H. M. M. Schmitt, J. M. Cabrera Sixto, J. N. Gonzalez-Perez, K.-P. Schroder, M. A. Trinidad, M. Mittag","submitted_at":"2015-06-02T16:10:16Z","abstract_excerpt":"We present a time series of high resolution spectra of the Type Ia supernova 2014J, which exploded in the nearby galaxy M82. The spectra were obtained with the HEROS echelle spectrograph installed at the 1.2 m TIGRE telescope. We present a series of 33 spectra with a resolution of R = 20, 000, which covers the important bright phases in the evolution of SN 2014J during the period from January 24 to April 1 of 2014. The spectral evolution of SN 2014J is derived empirically. The expansion velocities of the Si II P-Cygni features were measured and show the expected decreasing behaviour, beginning"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.00938","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":"1506.00938","created_at":"2026-05-18T01:59:34.048214+00:00"},{"alias_kind":"arxiv_version","alias_value":"1506.00938v1","created_at":"2026-05-18T01:59:34.048214+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.00938","created_at":"2026-05-18T01:59:34.048214+00:00"},{"alias_kind":"pith_short_12","alias_value":"WQDGDL4F7INR","created_at":"2026-05-18T12:29:47.479230+00:00"},{"alias_kind":"pith_short_16","alias_value":"WQDGDL4F7INRSLPW","created_at":"2026-05-18T12:29:47.479230+00:00"},{"alias_kind":"pith_short_8","alias_value":"WQDGDL4F","created_at":"2026-05-18T12:29:47.479230+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/WQDGDL4F7INRSLPWOIIJ7ESNL6","json":"https://pith.science/pith/WQDGDL4F7INRSLPWOIIJ7ESNL6.json","graph_json":"https://pith.science/api/pith-number/WQDGDL4F7INRSLPWOIIJ7ESNL6/graph.json","events_json":"https://pith.science/api/pith-number/WQDGDL4F7INRSLPWOIIJ7ESNL6/events.json","paper":"https://pith.science/paper/WQDGDL4F"},"agent_actions":{"view_html":"https://pith.science/pith/WQDGDL4F7INRSLPWOIIJ7ESNL6","download_json":"https://pith.science/pith/WQDGDL4F7INRSLPWOIIJ7ESNL6.json","view_paper":"https://pith.science/paper/WQDGDL4F","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1506.00938&json=true","fetch_graph":"https://pith.science/api/pith-number/WQDGDL4F7INRSLPWOIIJ7ESNL6/graph.json","fetch_events":"https://pith.science/api/pith-number/WQDGDL4F7INRSLPWOIIJ7ESNL6/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WQDGDL4F7INRSLPWOIIJ7ESNL6/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WQDGDL4F7INRSLPWOIIJ7ESNL6/action/storage_attestation","attest_author":"https://pith.science/pith/WQDGDL4F7INRSLPWOIIJ7ESNL6/action/author_attestation","sign_citation":"https://pith.science/pith/WQDGDL4F7INRSLPWOIIJ7ESNL6/action/citation_signature","submit_replication":"https://pith.science/pith/WQDGDL4F7INRSLPWOIIJ7ESNL6/action/replication_record"}},"created_at":"2026-05-18T01:59:34.048214+00:00","updated_at":"2026-05-18T01:59:34.048214+00:00"}