{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2007:XW2J4K6PL6L56XP54JOGSBR6ET","short_pith_number":"pith:XW2J4K6P","schema_version":"1.0","canonical_sha256":"bdb49e2bcf5f97df5dfde25c69063e24cf5d5da8371d8b1ec3700ce6bb13a868","source":{"kind":"arxiv","id":"astro-ph/0703089","version":1},"attestation_state":"computed","paper":{"title":"Spitzer Limits On Dust Emission and Optical Gas Absorption Variability Around Nearby Stars with Edge-On Circumstellar Disk Signatures","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Jacqueline E. Kessler-Silacci, Lucas A. Cieza, Seth Redfield","submitted_at":"2007-03-05T21:10:07Z","abstract_excerpt":"We present Spitzer observations and McDonald Observatory Smith Telescope and Anglo-Australian Telescope high spectral resolution optical observations of 4 nearby stars with variable or anomalous optical absorption, likely caused by circumstellar material. The optical observations of CaII and NaI cover a 2.8 year baseline, and extend the long term monitoring of these systems by previous researchers. In addition, mini-surveys of the local interstellar medium (LISM) around our primary targets provide a reconstruction of the intervening LISM along the line of sight. We confirm that the anomalous a"},"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":"astro-ph/0703089","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-05T21:10:07Z","cross_cats_sorted":[],"title_canon_sha256":"33846dfd126c34bf92fa02e6b167f78dea22763fd7471c8c157230b4a175046c","abstract_canon_sha256":"e4d3c58285286cde883df15b36b1334e8204cf677ca927147ec15558c16abf8e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:05.994519Z","signature_b64":"q7fkC3gtgaA6T2XlGh5EsOrVFCpXI5OHPb7L9ICCCMJDn/U50hMWXU0sQWAMl7YTlkCEAqt5nod2L/RsVE0mDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bdb49e2bcf5f97df5dfde25c69063e24cf5d5da8371d8b1ec3700ce6bb13a868","last_reissued_at":"2026-05-18T04:29:05.993810Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:05.993810Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spitzer Limits On Dust Emission and Optical Gas Absorption Variability Around Nearby Stars with Edge-On Circumstellar Disk Signatures","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Jacqueline E. Kessler-Silacci, Lucas A. Cieza, Seth Redfield","submitted_at":"2007-03-05T21:10:07Z","abstract_excerpt":"We present Spitzer observations and McDonald Observatory Smith Telescope and Anglo-Australian Telescope high spectral resolution optical observations of 4 nearby stars with variable or anomalous optical absorption, likely caused by circumstellar material. The optical observations of CaII and NaI cover a 2.8 year baseline, and extend the long term monitoring of these systems by previous researchers. In addition, mini-surveys of the local interstellar medium (LISM) around our primary targets provide a reconstruction of the intervening LISM along the line of sight. We confirm that the anomalous a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0703089","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":"astro-ph/0703089","created_at":"2026-05-18T04:29:05.993930+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0703089v1","created_at":"2026-05-18T04:29:05.993930+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0703089","created_at":"2026-05-18T04:29:05.993930+00:00"},{"alias_kind":"pith_short_12","alias_value":"XW2J4K6PL6L5","created_at":"2026-05-18T12:25:56.245647+00:00"},{"alias_kind":"pith_short_16","alias_value":"XW2J4K6PL6L56XP5","created_at":"2026-05-18T12:25:56.245647+00:00"},{"alias_kind":"pith_short_8","alias_value":"XW2J4K6P","created_at":"2026-05-18T12:25:56.245647+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/XW2J4K6PL6L56XP54JOGSBR6ET","json":"https://pith.science/pith/XW2J4K6PL6L56XP54JOGSBR6ET.json","graph_json":"https://pith.science/api/pith-number/XW2J4K6PL6L56XP54JOGSBR6ET/graph.json","events_json":"https://pith.science/api/pith-number/XW2J4K6PL6L56XP54JOGSBR6ET/events.json","paper":"https://pith.science/paper/XW2J4K6P"},"agent_actions":{"view_html":"https://pith.science/pith/XW2J4K6PL6L56XP54JOGSBR6ET","download_json":"https://pith.science/pith/XW2J4K6PL6L56XP54JOGSBR6ET.json","view_paper":"https://pith.science/paper/XW2J4K6P","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0703089&json=true","fetch_graph":"https://pith.science/api/pith-number/XW2J4K6PL6L56XP54JOGSBR6ET/graph.json","fetch_events":"https://pith.science/api/pith-number/XW2J4K6PL6L56XP54JOGSBR6ET/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/XW2J4K6PL6L56XP54JOGSBR6ET/action/timestamp_anchor","attest_storage":"https://pith.science/pith/XW2J4K6PL6L56XP54JOGSBR6ET/action/storage_attestation","attest_author":"https://pith.science/pith/XW2J4K6PL6L56XP54JOGSBR6ET/action/author_attestation","sign_citation":"https://pith.science/pith/XW2J4K6PL6L56XP54JOGSBR6ET/action/citation_signature","submit_replication":"https://pith.science/pith/XW2J4K6PL6L56XP54JOGSBR6ET/action/replication_record"}},"created_at":"2026-05-18T04:29:05.993930+00:00","updated_at":"2026-05-18T04:29:05.993930+00:00"}