{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:45G4RDKBESWWPZONPJRUU7WFBJ","short_pith_number":"pith:45G4RDKB","schema_version":"1.0","canonical_sha256":"e74dc88d4124ad67e5cd7a634a7ec50a6bac3f83e7bbf033f1c31507b0260fdc","source":{"kind":"arxiv","id":"1209.0025","version":1},"attestation_state":"computed","paper":{"title":"The Magellan/IMACS Catalog of Optical Supernova Remnant Candidates in M83","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"K. S. Long, P. Frank Winkler, William P. Blair","submitted_at":"2012-08-31T22:12:14Z","abstract_excerpt":"We present a new optical imaging survey of supernova remnants in M83, using data obtained with the Magellan I 6.5m telescope and IMACS instrument under conditions of excellent seeing. Using the criterion of strong [S II] emission relative to Halpha, we confirm all but three of the 71 SNR candidates listed in our previous survey, and expand the SNR candidate list to 225 objects, more than tripling the earlier sample. Comparing the optical survey with a new deep X-ray survey of M83 with Chandra, we find 61 of these SNR candidates to have X-ray counterparts. We also identify an additional list of"},"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":"1209.0025","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-08-31T22:12:14Z","cross_cats_sorted":[],"title_canon_sha256":"3e36c3bcf003db4b9e04dbc2abac057402ffc68db83d9d62f612059d4944390e","abstract_canon_sha256":"0e66c8594ecd90485a03ec483c85bc2c2b602f6d324c5f65c598962feba0b42a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:48.781226Z","signature_b64":"s//iPUwHeh2tmLwLKXNUEc6NgliB2w+hdZwT/LM6o7yQnZcXu7rxsn67+jq5OF603ilWKrejfhwidzNEGlppAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e74dc88d4124ad67e5cd7a634a7ec50a6bac3f83e7bbf033f1c31507b0260fdc","last_reissued_at":"2026-05-18T01:54:48.780719Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:48.780719Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Magellan/IMACS Catalog of Optical Supernova Remnant Candidates in M83","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"K. S. Long, P. Frank Winkler, William P. Blair","submitted_at":"2012-08-31T22:12:14Z","abstract_excerpt":"We present a new optical imaging survey of supernova remnants in M83, using data obtained with the Magellan I 6.5m telescope and IMACS instrument under conditions of excellent seeing. Using the criterion of strong [S II] emission relative to Halpha, we confirm all but three of the 71 SNR candidates listed in our previous survey, and expand the SNR candidate list to 225 objects, more than tripling the earlier sample. Comparing the optical survey with a new deep X-ray survey of M83 with Chandra, we find 61 of these SNR candidates to have X-ray counterparts. We also identify an additional list of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.0025","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":"1209.0025","created_at":"2026-05-18T01:54:48.780793+00:00"},{"alias_kind":"arxiv_version","alias_value":"1209.0025v1","created_at":"2026-05-18T01:54:48.780793+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.0025","created_at":"2026-05-18T01:54:48.780793+00:00"},{"alias_kind":"pith_short_12","alias_value":"45G4RDKBESWW","created_at":"2026-05-18T12:26:53.410803+00:00"},{"alias_kind":"pith_short_16","alias_value":"45G4RDKBESWWPZON","created_at":"2026-05-18T12:26:53.410803+00:00"},{"alias_kind":"pith_short_8","alias_value":"45G4RDKB","created_at":"2026-05-18T12:26:53.410803+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2605.15659","citing_title":"Sub-kpc scale gas density histograms of the nearby barred spiral galaxy M83: Multi-component molecular gas structure reflecting the galactic environment","ref_index":81,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/45G4RDKBESWWPZONPJRUU7WFBJ","json":"https://pith.science/pith/45G4RDKBESWWPZONPJRUU7WFBJ.json","graph_json":"https://pith.science/api/pith-number/45G4RDKBESWWPZONPJRUU7WFBJ/graph.json","events_json":"https://pith.science/api/pith-number/45G4RDKBESWWPZONPJRUU7WFBJ/events.json","paper":"https://pith.science/paper/45G4RDKB"},"agent_actions":{"view_html":"https://pith.science/pith/45G4RDKBESWWPZONPJRUU7WFBJ","download_json":"https://pith.science/pith/45G4RDKBESWWPZONPJRUU7WFBJ.json","view_paper":"https://pith.science/paper/45G4RDKB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1209.0025&json=true","fetch_graph":"https://pith.science/api/pith-number/45G4RDKBESWWPZONPJRUU7WFBJ/graph.json","fetch_events":"https://pith.science/api/pith-number/45G4RDKBESWWPZONPJRUU7WFBJ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/45G4RDKBESWWPZONPJRUU7WFBJ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/45G4RDKBESWWPZONPJRUU7WFBJ/action/storage_attestation","attest_author":"https://pith.science/pith/45G4RDKBESWWPZONPJRUU7WFBJ/action/author_attestation","sign_citation":"https://pith.science/pith/45G4RDKBESWWPZONPJRUU7WFBJ/action/citation_signature","submit_replication":"https://pith.science/pith/45G4RDKBESWWPZONPJRUU7WFBJ/action/replication_record"}},"created_at":"2026-05-18T01:54:48.780793+00:00","updated_at":"2026-05-18T01:54:48.780793+00:00"}