{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:CP3LWU4ST2562ZNPMRZO4X65S5","short_pith_number":"pith:CP3LWU4S","schema_version":"1.0","canonical_sha256":"13f6bb53929ebbed65af6472ee5fdd97680c4feecc55f026523d77f2c78bcf7e","source":{"kind":"arxiv","id":"2408.12639","version":3},"attestation_state":"computed","paper":{"title":"The JWST/NIRISS Deep Spectroscopic Survey for Young Brown Dwarfs and Free-Floating Planets","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Adam B. Langeveld, Aleks Scholz, Daniel Capela, David Lafr\\`eniere, Doug Johnstone, Koraljka Mu\\v{z}i\\'c, Laura Flagg, Lo\\\"ic Albert, Matthew De Furio, Michael Meyer, Ray Jayawardhana, Ren\\'e Doyon","submitted_at":"2024-08-22T18:00:00Z","abstract_excerpt":"The discovery and characterization of free-floating planetary-mass objects (FFPMOs) is fundamental to our understanding of star and planet formation. Here we report results from an extremely deep spectroscopic survey of the young star cluster NGC1333 using NIRISS WFSS on the James Webb Space Telescope. The survey is photometrically complete to K~21, and includes useful spectra for objects as faint as K~20.5. The observations cover 19 known brown dwarfs, for most of which we confirm spectral types using NIRISS spectra. We discover six new candidates with L-dwarf spectral types that are plausibl"},"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":"2408.12639","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2024-08-22T18:00:00Z","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"title_canon_sha256":"691414030564000cc75e9bbe79696fa7909326d2204b7bd66d74f2b1a1256623","abstract_canon_sha256":"36e39011dc9f344e148f95f8c819b72e7280505d98f761f666e20be034a3b382"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:12:09.030462Z","signature_b64":"i/s20tZw4ZtiU+agQ8PqQyQmCfILW124OPH63fm0E/eiHLFdHNYcnGMmFlAZ14RSJv3WdX0Qb4gQoIYzI5rJCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"13f6bb53929ebbed65af6472ee5fdd97680c4feecc55f026523d77f2c78bcf7e","last_reissued_at":"2026-07-05T09:12:09.029947Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:12:09.029947Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The JWST/NIRISS Deep Spectroscopic Survey for Young Brown Dwarfs and Free-Floating Planets","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Adam B. Langeveld, Aleks Scholz, Daniel Capela, David Lafr\\`eniere, Doug Johnstone, Koraljka Mu\\v{z}i\\'c, Laura Flagg, Lo\\\"ic Albert, Matthew De Furio, Michael Meyer, Ray Jayawardhana, Ren\\'e Doyon","submitted_at":"2024-08-22T18:00:00Z","abstract_excerpt":"The discovery and characterization of free-floating planetary-mass objects (FFPMOs) is fundamental to our understanding of star and planet formation. Here we report results from an extremely deep spectroscopic survey of the young star cluster NGC1333 using NIRISS WFSS on the James Webb Space Telescope. The survey is photometrically complete to K~21, and includes useful spectra for objects as faint as K~20.5. The observations cover 19 known brown dwarfs, for most of which we confirm spectral types using NIRISS spectra. We discover six new candidates with L-dwarf spectral types that are plausibl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2408.12639","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2408.12639/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2408.12639","created_at":"2026-07-05T09:12:09.030007+00:00"},{"alias_kind":"arxiv_version","alias_value":"2408.12639v3","created_at":"2026-07-05T09:12:09.030007+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2408.12639","created_at":"2026-07-05T09:12:09.030007+00:00"},{"alias_kind":"pith_short_12","alias_value":"CP3LWU4ST256","created_at":"2026-07-05T09:12:09.030007+00:00"},{"alias_kind":"pith_short_16","alias_value":"CP3LWU4ST2562ZNP","created_at":"2026-07-05T09:12:09.030007+00:00"},{"alias_kind":"pith_short_8","alias_value":"CP3LWU4S","created_at":"2026-07-05T09:12:09.030007+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/CP3LWU4ST2562ZNPMRZO4X65S5","json":"https://pith.science/pith/CP3LWU4ST2562ZNPMRZO4X65S5.json","graph_json":"https://pith.science/api/pith-number/CP3LWU4ST2562ZNPMRZO4X65S5/graph.json","events_json":"https://pith.science/api/pith-number/CP3LWU4ST2562ZNPMRZO4X65S5/events.json","paper":"https://pith.science/paper/CP3LWU4S"},"agent_actions":{"view_html":"https://pith.science/pith/CP3LWU4ST2562ZNPMRZO4X65S5","download_json":"https://pith.science/pith/CP3LWU4ST2562ZNPMRZO4X65S5.json","view_paper":"https://pith.science/paper/CP3LWU4S","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2408.12639&json=true","fetch_graph":"https://pith.science/api/pith-number/CP3LWU4ST2562ZNPMRZO4X65S5/graph.json","fetch_events":"https://pith.science/api/pith-number/CP3LWU4ST2562ZNPMRZO4X65S5/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/CP3LWU4ST2562ZNPMRZO4X65S5/action/timestamp_anchor","attest_storage":"https://pith.science/pith/CP3LWU4ST2562ZNPMRZO4X65S5/action/storage_attestation","attest_author":"https://pith.science/pith/CP3LWU4ST2562ZNPMRZO4X65S5/action/author_attestation","sign_citation":"https://pith.science/pith/CP3LWU4ST2562ZNPMRZO4X65S5/action/citation_signature","submit_replication":"https://pith.science/pith/CP3LWU4ST2562ZNPMRZO4X65S5/action/replication_record"}},"created_at":"2026-07-05T09:12:09.030007+00:00","updated_at":"2026-07-05T09:12:09.030007+00:00"}