{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:HUNFHAACWZ3NBAADRO2G2PBIKS","short_pith_number":"pith:HUNFHAAC","schema_version":"1.0","canonical_sha256":"3d1a538002b676d080038bb46d3c28548a17ca181647259ac7d9933cc7a1d3ec","source":{"kind":"arxiv","id":"1606.09450","version":1},"attestation_state":"computed","paper":{"title":"Variations of the Interstellar Extinction Law within the Nearest Kiloparsec","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"George Gontcharov","submitted_at":"2016-06-30T12:15:36Z","abstract_excerpt":"Multicolor photometry from the Tycho-2 and 2MASS catalogues for 11 990 OB and 30 671 K-type red giant branch stars is used to detect systematic large-scale variations of the interstellar extinction law within the nearest kiloparsec. The characteristic of the extinction law, the total-to-selective extinction ratio $R_V$, which also characterizes the size and other properties of interstellar dust grains, has been calculated for various regions of space by the extinction law extrapolation method. The results for the two classes of stars agree: the standard deviation of the \"red giants minus OB\" $"},"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":"1606.09450","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-06-30T12:15:36Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"ce093e8df127c4b1b24cfd3e74f88de8fd510a6f2dbff11adb904a308fe2618e","abstract_canon_sha256":"fa3f6e1ae8f9f9e7ba0aaf161f613cac9ca9a1efab5c2ca829669c935e7d0e31"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:11:38.208163Z","signature_b64":"ovG8aideR9Qr/N/5HLTbHlECwNAFpDUummG9BzfZKjW8CecxHSnSXWn+6xxhYC3m2ug9ZxENPDJsk5+8mKRrAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3d1a538002b676d080038bb46d3c28548a17ca181647259ac7d9933cc7a1d3ec","last_reissued_at":"2026-05-18T01:11:38.207777Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:11:38.207777Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Variations of the Interstellar Extinction Law within the Nearest Kiloparsec","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"George Gontcharov","submitted_at":"2016-06-30T12:15:36Z","abstract_excerpt":"Multicolor photometry from the Tycho-2 and 2MASS catalogues for 11 990 OB and 30 671 K-type red giant branch stars is used to detect systematic large-scale variations of the interstellar extinction law within the nearest kiloparsec. The characteristic of the extinction law, the total-to-selective extinction ratio $R_V$, which also characterizes the size and other properties of interstellar dust grains, has been calculated for various regions of space by the extinction law extrapolation method. The results for the two classes of stars agree: the standard deviation of the \"red giants minus OB\" $"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.09450","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":"1606.09450","created_at":"2026-05-18T01:11:38.207847+00:00"},{"alias_kind":"arxiv_version","alias_value":"1606.09450v1","created_at":"2026-05-18T01:11:38.207847+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.09450","created_at":"2026-05-18T01:11:38.207847+00:00"},{"alias_kind":"pith_short_12","alias_value":"HUNFHAACWZ3N","created_at":"2026-05-18T12:30:22.444734+00:00"},{"alias_kind":"pith_short_16","alias_value":"HUNFHAACWZ3NBAAD","created_at":"2026-05-18T12:30:22.444734+00:00"},{"alias_kind":"pith_short_8","alias_value":"HUNFHAAC","created_at":"2026-05-18T12:30:22.444734+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/HUNFHAACWZ3NBAADRO2G2PBIKS","json":"https://pith.science/pith/HUNFHAACWZ3NBAADRO2G2PBIKS.json","graph_json":"https://pith.science/api/pith-number/HUNFHAACWZ3NBAADRO2G2PBIKS/graph.json","events_json":"https://pith.science/api/pith-number/HUNFHAACWZ3NBAADRO2G2PBIKS/events.json","paper":"https://pith.science/paper/HUNFHAAC"},"agent_actions":{"view_html":"https://pith.science/pith/HUNFHAACWZ3NBAADRO2G2PBIKS","download_json":"https://pith.science/pith/HUNFHAACWZ3NBAADRO2G2PBIKS.json","view_paper":"https://pith.science/paper/HUNFHAAC","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1606.09450&json=true","fetch_graph":"https://pith.science/api/pith-number/HUNFHAACWZ3NBAADRO2G2PBIKS/graph.json","fetch_events":"https://pith.science/api/pith-number/HUNFHAACWZ3NBAADRO2G2PBIKS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/HUNFHAACWZ3NBAADRO2G2PBIKS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/HUNFHAACWZ3NBAADRO2G2PBIKS/action/storage_attestation","attest_author":"https://pith.science/pith/HUNFHAACWZ3NBAADRO2G2PBIKS/action/author_attestation","sign_citation":"https://pith.science/pith/HUNFHAACWZ3NBAADRO2G2PBIKS/action/citation_signature","submit_replication":"https://pith.science/pith/HUNFHAACWZ3NBAADRO2G2PBIKS/action/replication_record"}},"created_at":"2026-05-18T01:11:38.207847+00:00","updated_at":"2026-05-18T01:11:38.207847+00:00"}