{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:7YFU2J4M3B32XI7FHN3C36T5GV","short_pith_number":"pith:7YFU2J4M","schema_version":"1.0","canonical_sha256":"fe0b4d278cd877aba3e53b762dfa7d35797178652129adb9408d7404c46a7176","source":{"kind":"arxiv","id":"1810.00634","version":1},"attestation_state":"computed","paper":{"title":"HST STIS UV Spectroscopic Observations of the Protoplanetary Nebula Hen3-1475","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Ana I. Gomez de Castro, Angels Riera, Jesus A. Toala, Xuan Fang","submitted_at":"2018-10-01T11:53:42Z","abstract_excerpt":"We present UV spectra of the protoplanetary nebula (pPN) Hen3-1475 obtained with the Space Telescope Imaging Spectrograph (STIS) on board the Hubble Space Telescope (HST). Our deep, low-dispersion spectroscopy enables monochromatic imaging of Hen3-1475 in UV nebular emission lines, the first of such attempt ever made for a pPN. The high spatial resolution of STIS imaging allows an unprecedentedly sharp view of the S-shaped jet, especially the inner NW1 knot, which is resolved into four components in the MgII 2800 line emission. Through critical comparison with HST optical narrowband images, we"},"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":"1810.00634","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-10-01T11:53:42Z","cross_cats_sorted":[],"title_canon_sha256":"7e4af7775069b2464c3fa2227c069c380c45ced6e7af6bf074bbd3ecdfe6bd7f","abstract_canon_sha256":"1742be7d44151d6f7712b9261fab4d4f436568b7bd5015c842b95d4763384799"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:03:01.166941Z","signature_b64":"zSeZ1z5bAshaS4dZaKYL3w6PP0NfSkz/vzDdvartbbLTv4yZcP1CE92nueecVarFQnuiTUJmF2SLqCWRmHsUBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fe0b4d278cd877aba3e53b762dfa7d35797178652129adb9408d7404c46a7176","last_reissued_at":"2026-05-18T00:03:01.166338Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:03:01.166338Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"HST STIS UV Spectroscopic Observations of the Protoplanetary Nebula Hen3-1475","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Ana I. Gomez de Castro, Angels Riera, Jesus A. Toala, Xuan Fang","submitted_at":"2018-10-01T11:53:42Z","abstract_excerpt":"We present UV spectra of the protoplanetary nebula (pPN) Hen3-1475 obtained with the Space Telescope Imaging Spectrograph (STIS) on board the Hubble Space Telescope (HST). Our deep, low-dispersion spectroscopy enables monochromatic imaging of Hen3-1475 in UV nebular emission lines, the first of such attempt ever made for a pPN. The high spatial resolution of STIS imaging allows an unprecedentedly sharp view of the S-shaped jet, especially the inner NW1 knot, which is resolved into four components in the MgII 2800 line emission. Through critical comparison with HST optical narrowband images, we"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.00634","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":"1810.00634","created_at":"2026-05-18T00:03:01.166440+00:00"},{"alias_kind":"arxiv_version","alias_value":"1810.00634v1","created_at":"2026-05-18T00:03:01.166440+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.00634","created_at":"2026-05-18T00:03:01.166440+00:00"},{"alias_kind":"pith_short_12","alias_value":"7YFU2J4M3B32","created_at":"2026-05-18T12:32:13.499390+00:00"},{"alias_kind":"pith_short_16","alias_value":"7YFU2J4M3B32XI7F","created_at":"2026-05-18T12:32:13.499390+00:00"},{"alias_kind":"pith_short_8","alias_value":"7YFU2J4M","created_at":"2026-05-18T12:32:13.499390+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/7YFU2J4M3B32XI7FHN3C36T5GV","json":"https://pith.science/pith/7YFU2J4M3B32XI7FHN3C36T5GV.json","graph_json":"https://pith.science/api/pith-number/7YFU2J4M3B32XI7FHN3C36T5GV/graph.json","events_json":"https://pith.science/api/pith-number/7YFU2J4M3B32XI7FHN3C36T5GV/events.json","paper":"https://pith.science/paper/7YFU2J4M"},"agent_actions":{"view_html":"https://pith.science/pith/7YFU2J4M3B32XI7FHN3C36T5GV","download_json":"https://pith.science/pith/7YFU2J4M3B32XI7FHN3C36T5GV.json","view_paper":"https://pith.science/paper/7YFU2J4M","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1810.00634&json=true","fetch_graph":"https://pith.science/api/pith-number/7YFU2J4M3B32XI7FHN3C36T5GV/graph.json","fetch_events":"https://pith.science/api/pith-number/7YFU2J4M3B32XI7FHN3C36T5GV/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/7YFU2J4M3B32XI7FHN3C36T5GV/action/timestamp_anchor","attest_storage":"https://pith.science/pith/7YFU2J4M3B32XI7FHN3C36T5GV/action/storage_attestation","attest_author":"https://pith.science/pith/7YFU2J4M3B32XI7FHN3C36T5GV/action/author_attestation","sign_citation":"https://pith.science/pith/7YFU2J4M3B32XI7FHN3C36T5GV/action/citation_signature","submit_replication":"https://pith.science/pith/7YFU2J4M3B32XI7FHN3C36T5GV/action/replication_record"}},"created_at":"2026-05-18T00:03:01.166440+00:00","updated_at":"2026-05-18T00:03:01.166440+00:00"}