{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:W7X3SYMLPZKS3DZH7KDSXYHNHN","short_pith_number":"pith:W7X3SYML","schema_version":"1.0","canonical_sha256":"b7efb9618b7e552d8f27fa872be0ed3b60dc5e146de8b8d463ef9508773cd82b","source":{"kind":"arxiv","id":"0901.4093","version":1},"attestation_state":"computed","paper":{"title":"The Physical Properties of Four ~600K T Dwarfs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"A. K. Mainzer, B. Burningham, D. J. Pinfield, D. Saumon, E. L. Martin, G. C. Sloan, H. R. A. Jones, J. D. Kirkpatrick, J. van Cleve, M. C. Cushing, M. J. McCaughrean, M. S. Marley, M. Tamura, N. Lodieu, P. W. Lucas, R. L. Smart, S. J. Warren, S. K. Leggett, T. L. Roellig","submitted_at":"2009-01-26T20:31:39Z","abstract_excerpt":"We present Spitzer 7.6-14.5um spectra of ULAS J003402.77-005206.7 and ULAS J133553.45+113005.2, two T9 dwarfs with the latest spectral types currently known. We fit synthetic spectra and photometry to the near- through mid-infrared energy distributions of these dwarfs and that of the T8 dwarf 2MASS J09393548-2448279. We also analyse near-infrared data for another T9, CFBD J005910.82-011401.3. We find that the ratio of the mid- to near-infrared fluxes is very sensitive to effective temperature at these low temperatures, and that the 2.2 and 4.5um fluxes are sensitive to metallicity and gravity;"},"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":"0901.4093","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-01-26T20:31:39Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"6acaebb661043ccee1d08bf6dfd60fb7dd8d9e5a8cb23b96017ad433c6bfcbd8","abstract_canon_sha256":"18addd7914be6b265cf7cd9909a4fdb3a57497b8d7183e716da994cbbcbbf390"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:17.164152Z","signature_b64":"PjM4Zk9P7GRtl2JB+ynuUftQbBWDR92TePB4N4KdlGdg5Iq6yUU1VTbx17O66u/89By9f/jBoEtcbA9eFScjDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b7efb9618b7e552d8f27fa872be0ed3b60dc5e146de8b8d463ef9508773cd82b","last_reissued_at":"2026-05-18T04:29:17.163624Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:17.163624Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Physical Properties of Four ~600K T Dwarfs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"A. K. Mainzer, B. Burningham, D. J. Pinfield, D. Saumon, E. L. Martin, G. C. Sloan, H. R. A. Jones, J. D. Kirkpatrick, J. van Cleve, M. C. Cushing, M. J. McCaughrean, M. S. Marley, M. Tamura, N. Lodieu, P. W. Lucas, R. L. Smart, S. J. Warren, S. K. Leggett, T. L. Roellig","submitted_at":"2009-01-26T20:31:39Z","abstract_excerpt":"We present Spitzer 7.6-14.5um spectra of ULAS J003402.77-005206.7 and ULAS J133553.45+113005.2, two T9 dwarfs with the latest spectral types currently known. We fit synthetic spectra and photometry to the near- through mid-infrared energy distributions of these dwarfs and that of the T8 dwarf 2MASS J09393548-2448279. We also analyse near-infrared data for another T9, CFBD J005910.82-011401.3. We find that the ratio of the mid- to near-infrared fluxes is very sensitive to effective temperature at these low temperatures, and that the 2.2 and 4.5um fluxes are sensitive to metallicity and gravity;"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0901.4093","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":"0901.4093","created_at":"2026-05-18T04:29:17.163714+00:00"},{"alias_kind":"arxiv_version","alias_value":"0901.4093v1","created_at":"2026-05-18T04:29:17.163714+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0901.4093","created_at":"2026-05-18T04:29:17.163714+00:00"},{"alias_kind":"pith_short_12","alias_value":"W7X3SYMLPZKS","created_at":"2026-05-18T12:26:02.257875+00:00"},{"alias_kind":"pith_short_16","alias_value":"W7X3SYMLPZKS3DZH","created_at":"2026-05-18T12:26:02.257875+00:00"},{"alias_kind":"pith_short_8","alias_value":"W7X3SYML","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/W7X3SYMLPZKS3DZH7KDSXYHNHN","json":"https://pith.science/pith/W7X3SYMLPZKS3DZH7KDSXYHNHN.json","graph_json":"https://pith.science/api/pith-number/W7X3SYMLPZKS3DZH7KDSXYHNHN/graph.json","events_json":"https://pith.science/api/pith-number/W7X3SYMLPZKS3DZH7KDSXYHNHN/events.json","paper":"https://pith.science/paper/W7X3SYML"},"agent_actions":{"view_html":"https://pith.science/pith/W7X3SYMLPZKS3DZH7KDSXYHNHN","download_json":"https://pith.science/pith/W7X3SYMLPZKS3DZH7KDSXYHNHN.json","view_paper":"https://pith.science/paper/W7X3SYML","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0901.4093&json=true","fetch_graph":"https://pith.science/api/pith-number/W7X3SYMLPZKS3DZH7KDSXYHNHN/graph.json","fetch_events":"https://pith.science/api/pith-number/W7X3SYMLPZKS3DZH7KDSXYHNHN/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/W7X3SYMLPZKS3DZH7KDSXYHNHN/action/timestamp_anchor","attest_storage":"https://pith.science/pith/W7X3SYMLPZKS3DZH7KDSXYHNHN/action/storage_attestation","attest_author":"https://pith.science/pith/W7X3SYMLPZKS3DZH7KDSXYHNHN/action/author_attestation","sign_citation":"https://pith.science/pith/W7X3SYMLPZKS3DZH7KDSXYHNHN/action/citation_signature","submit_replication":"https://pith.science/pith/W7X3SYMLPZKS3DZH7KDSXYHNHN/action/replication_record"}},"created_at":"2026-05-18T04:29:17.163714+00:00","updated_at":"2026-05-18T04:29:17.163714+00:00"}