{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:VWCU62ET2ZM5U4Q3VVW3BTOCCR","short_pith_number":"pith:VWCU62ET","schema_version":"1.0","canonical_sha256":"ad854f6893d659da721bad6db0cdc21478e0da386bb61ca3b7e1363b7f980cc2","source":{"kind":"arxiv","id":"0904.0005","version":2},"attestation_state":"computed","paper":{"title":"Polarisation of very-low-mass stars and brown dwarfs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"B. Goldman (MPIA), C.A.L. Bailer-Jones (MPIA), J.A. Caballero (UCM), J. Pitann (MPIA), M.R. Zapatero Osorio (IAC), Th. Henning (MPIA), V. J. S. Bejar (IAC)","submitted_at":"2009-04-01T19:55:24Z","abstract_excerpt":"Ultra-cool dwarfs of the L spectral type (Teff=1400-2200K) are known to have dusty atmospheres. Asymmetries of the dwarf surface may arise from rotationally-induced flattening and dust-cloud coverage, and may result in non-zero linear polarisation through dust scattering.\n  We aim to study the heterogeneity of ultra-cool dwarfs' atmospheres and the grain-size effects on the polarisation degree in a sample of nine late M, L and early T dwarfs.\n  We obtain linear polarimetric imaging measurements using FORS1 at the Very Large Telescope, in the Bessel I filter, and for a subset in the Bessel R an"},"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":"0904.0005","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-04-01T19:55:24Z","cross_cats_sorted":[],"title_canon_sha256":"39f1dc3302eb10502dcf1008ee951fe04d94b9858c64256786e95468d9b901de","abstract_canon_sha256":"0e72abaf65c9339e4e5d160320cea34ca37a479cdcde66bbec88287bfd918c3e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:14:08.498265Z","signature_b64":"QeTKp686kATuUW8m1HhJB8TCCFTg7omW8Hg42gkAigmgt1nBMq9JtXxBSFp9Va/qWjAwKgVgBy5fXqmyTllvAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ad854f6893d659da721bad6db0cdc21478e0da386bb61ca3b7e1363b7f980cc2","last_reissued_at":"2026-05-18T02:14:08.497616Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:14:08.497616Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Polarisation of very-low-mass stars and brown dwarfs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"B. Goldman (MPIA), C.A.L. Bailer-Jones (MPIA), J.A. Caballero (UCM), J. Pitann (MPIA), M.R. Zapatero Osorio (IAC), Th. Henning (MPIA), V. J. S. Bejar (IAC)","submitted_at":"2009-04-01T19:55:24Z","abstract_excerpt":"Ultra-cool dwarfs of the L spectral type (Teff=1400-2200K) are known to have dusty atmospheres. Asymmetries of the dwarf surface may arise from rotationally-induced flattening and dust-cloud coverage, and may result in non-zero linear polarisation through dust scattering.\n  We aim to study the heterogeneity of ultra-cool dwarfs' atmospheres and the grain-size effects on the polarisation degree in a sample of nine late M, L and early T dwarfs.\n  We obtain linear polarimetric imaging measurements using FORS1 at the Very Large Telescope, in the Bessel I filter, and for a subset in the Bessel R an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.0005","kind":"arxiv","version":2},"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":"0904.0005","created_at":"2026-05-18T02:14:08.497718+00:00"},{"alias_kind":"arxiv_version","alias_value":"0904.0005v2","created_at":"2026-05-18T02:14:08.497718+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.0005","created_at":"2026-05-18T02:14:08.497718+00:00"},{"alias_kind":"pith_short_12","alias_value":"VWCU62ET2ZM5","created_at":"2026-05-18T12:26:02.257875+00:00"},{"alias_kind":"pith_short_16","alias_value":"VWCU62ET2ZM5U4Q3","created_at":"2026-05-18T12:26:02.257875+00:00"},{"alias_kind":"pith_short_8","alias_value":"VWCU62ET","created_at":"2026-05-18T12:26:02.257875+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/VWCU62ET2ZM5U4Q3VVW3BTOCCR","json":"https://pith.science/pith/VWCU62ET2ZM5U4Q3VVW3BTOCCR.json","graph_json":"https://pith.science/api/pith-number/VWCU62ET2ZM5U4Q3VVW3BTOCCR/graph.json","events_json":"https://pith.science/api/pith-number/VWCU62ET2ZM5U4Q3VVW3BTOCCR/events.json","paper":"https://pith.science/paper/VWCU62ET"},"agent_actions":{"view_html":"https://pith.science/pith/VWCU62ET2ZM5U4Q3VVW3BTOCCR","download_json":"https://pith.science/pith/VWCU62ET2ZM5U4Q3VVW3BTOCCR.json","view_paper":"https://pith.science/paper/VWCU62ET","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0904.0005&json=true","fetch_graph":"https://pith.science/api/pith-number/VWCU62ET2ZM5U4Q3VVW3BTOCCR/graph.json","fetch_events":"https://pith.science/api/pith-number/VWCU62ET2ZM5U4Q3VVW3BTOCCR/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VWCU62ET2ZM5U4Q3VVW3BTOCCR/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VWCU62ET2ZM5U4Q3VVW3BTOCCR/action/storage_attestation","attest_author":"https://pith.science/pith/VWCU62ET2ZM5U4Q3VVW3BTOCCR/action/author_attestation","sign_citation":"https://pith.science/pith/VWCU62ET2ZM5U4Q3VVW3BTOCCR/action/citation_signature","submit_replication":"https://pith.science/pith/VWCU62ET2ZM5U4Q3VVW3BTOCCR/action/replication_record"}},"created_at":"2026-05-18T02:14:08.497718+00:00","updated_at":"2026-05-18T02:14:08.497718+00:00"}