{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:ESSPOLGZ2H2EYX3ZVGLTLQSNUQ","short_pith_number":"pith:ESSPOLGZ","canonical_record":{"source":{"id":"1502.04707","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-02-16T21:00:10Z","cross_cats_sorted":[],"title_canon_sha256":"19219e8621a94a4553ccedb709254f7bd3a78f34f178cacab595d7e31b816774","abstract_canon_sha256":"b08b557e32a2fa57a44e63333f593334013ca3a99a5ba0998ceb5548ab5041ff"},"schema_version":"1.0"},"canonical_sha256":"24a4f72cd9d1f44c5f79a99735c24da4283f277647b1356d91a53cbcbb68779a","source":{"kind":"arxiv","id":"1502.04707","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.04707","created_at":"2026-05-18T01:41:01Z"},{"alias_kind":"arxiv_version","alias_value":"1502.04707v1","created_at":"2026-05-18T01:41:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.04707","created_at":"2026-05-18T01:41:01Z"},{"alias_kind":"pith_short_12","alias_value":"ESSPOLGZ2H2E","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"ESSPOLGZ2H2EYX3Z","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"ESSPOLGZ","created_at":"2026-05-18T12:29:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:ESSPOLGZ2H2EYX3ZVGLTLQSNUQ","target":"record","payload":{"canonical_record":{"source":{"id":"1502.04707","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-02-16T21:00:10Z","cross_cats_sorted":[],"title_canon_sha256":"19219e8621a94a4553ccedb709254f7bd3a78f34f178cacab595d7e31b816774","abstract_canon_sha256":"b08b557e32a2fa57a44e63333f593334013ca3a99a5ba0998ceb5548ab5041ff"},"schema_version":"1.0"},"canonical_sha256":"24a4f72cd9d1f44c5f79a99735c24da4283f277647b1356d91a53cbcbb68779a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:01.323831Z","signature_b64":"89o5+cnCuec74PisoC45T4FLhNf9RS+PPCHhsyA3siqzm62s1M+LXzVh/AC/mH/XLwRRIIzBR+lwGaTHjpotDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"24a4f72cd9d1f44c5f79a99735c24da4283f277647b1356d91a53cbcbb68779a","last_reissued_at":"2026-05-18T01:41:01.323070Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:01.323070Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1502.04707","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:41:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uedG4L3yLSIEF4FH4qijJDH8BMpGvlr9pJQ6SJjX3lnoANTbE3WT/ysHrKr/5TjTqlz52SusYhe7j7KTABWQDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T12:16:26.639908Z"},"content_sha256":"8de1ac1718b5b7866d5c03072e0cafdf7df90e3c8c417f7ddb2be3ab46ebe7ee","schema_version":"1.0","event_id":"sha256:8de1ac1718b5b7866d5c03072e0cafdf7df90e3c8c417f7ddb2be3ab46ebe7ee"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:ESSPOLGZ2H2EYX3ZVGLTLQSNUQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discovery of a Low-Luminosity, Tight Substellar Binary at the T/Y Transition","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Michael C. Liu, S. K. Leggett, Trent J. Dupuy","submitted_at":"2015-02-16T21:00:10Z","abstract_excerpt":"We have discovered that the brown dwarf WISEJ014656.66+423410.0 is a close binary (0.0875$\\pm$0.0021 arcsec, 0.93$^{+0.12}_{-0.16}$ AU) from Keck laser guide star adaptive optics imaging. Our photometry for this system reveals that both components are less luminous than those in any known substellar binary. Combining a new integrated-light spectrum (T9p) and resolved YJH-band photometry from Keck allows us to perform spectral decomposition and assign component types of T9 and Y0. Many of the unusual features in the spectrum might be explained by high surface gravity: Y-band peak broadened to t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.04707","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:41:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kFuQxGbD1r8nJ1oO0Iq/NKmOZ3cuC2zBDhIvD+r0swyGnJpVVvTZDjFgKXcUB8/quJBAKl6MEGYUfOY7pWTYCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T12:16:26.640258Z"},"content_sha256":"a33158abe01673c7e98e0f1c2cdbacf3c55870c43ee58af43135c350fb19e420","schema_version":"1.0","event_id":"sha256:a33158abe01673c7e98e0f1c2cdbacf3c55870c43ee58af43135c350fb19e420"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ESSPOLGZ2H2EYX3ZVGLTLQSNUQ/bundle.json","state_url":"https://pith.science/pith/ESSPOLGZ2H2EYX3ZVGLTLQSNUQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ESSPOLGZ2H2EYX3ZVGLTLQSNUQ/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-03T12:16:26Z","links":{"resolver":"https://pith.science/pith/ESSPOLGZ2H2EYX3ZVGLTLQSNUQ","bundle":"https://pith.science/pith/ESSPOLGZ2H2EYX3ZVGLTLQSNUQ/bundle.json","state":"https://pith.science/pith/ESSPOLGZ2H2EYX3ZVGLTLQSNUQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ESSPOLGZ2H2EYX3ZVGLTLQSNUQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:ESSPOLGZ2H2EYX3ZVGLTLQSNUQ","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"b08b557e32a2fa57a44e63333f593334013ca3a99a5ba0998ceb5548ab5041ff","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-02-16T21:00:10Z","title_canon_sha256":"19219e8621a94a4553ccedb709254f7bd3a78f34f178cacab595d7e31b816774"},"schema_version":"1.0","source":{"id":"1502.04707","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.04707","created_at":"2026-05-18T01:41:01Z"},{"alias_kind":"arxiv_version","alias_value":"1502.04707v1","created_at":"2026-05-18T01:41:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.04707","created_at":"2026-05-18T01:41:01Z"},{"alias_kind":"pith_short_12","alias_value":"ESSPOLGZ2H2E","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"ESSPOLGZ2H2EYX3Z","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"ESSPOLGZ","created_at":"2026-05-18T12:29:19Z"}],"graph_snapshots":[{"event_id":"sha256:a33158abe01673c7e98e0f1c2cdbacf3c55870c43ee58af43135c350fb19e420","target":"graph","created_at":"2026-05-18T01:41:01Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We have discovered that the brown dwarf WISEJ014656.66+423410.0 is a close binary (0.0875$\\pm$0.0021 arcsec, 0.93$^{+0.12}_{-0.16}$ AU) from Keck laser guide star adaptive optics imaging. Our photometry for this system reveals that both components are less luminous than those in any known substellar binary. Combining a new integrated-light spectrum (T9p) and resolved YJH-band photometry from Keck allows us to perform spectral decomposition and assign component types of T9 and Y0. Many of the unusual features in the spectrum might be explained by high surface gravity: Y-band peak broadened to t","authors_text":"Michael C. Liu, S. K. Leggett, Trent J. Dupuy","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-02-16T21:00:10Z","title":"Discovery of a Low-Luminosity, Tight Substellar Binary at the T/Y Transition"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.04707","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:8de1ac1718b5b7866d5c03072e0cafdf7df90e3c8c417f7ddb2be3ab46ebe7ee","target":"record","created_at":"2026-05-18T01:41:01Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"b08b557e32a2fa57a44e63333f593334013ca3a99a5ba0998ceb5548ab5041ff","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-02-16T21:00:10Z","title_canon_sha256":"19219e8621a94a4553ccedb709254f7bd3a78f34f178cacab595d7e31b816774"},"schema_version":"1.0","source":{"id":"1502.04707","kind":"arxiv","version":1}},"canonical_sha256":"24a4f72cd9d1f44c5f79a99735c24da4283f277647b1356d91a53cbcbb68779a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"24a4f72cd9d1f44c5f79a99735c24da4283f277647b1356d91a53cbcbb68779a","first_computed_at":"2026-05-18T01:41:01.323070Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:01.323070Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"89o5+cnCuec74PisoC45T4FLhNf9RS+PPCHhsyA3siqzm62s1M+LXzVh/AC/mH/XLwRRIIzBR+lwGaTHjpotDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:01.323831Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.04707","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8de1ac1718b5b7866d5c03072e0cafdf7df90e3c8c417f7ddb2be3ab46ebe7ee","sha256:a33158abe01673c7e98e0f1c2cdbacf3c55870c43ee58af43135c350fb19e420"],"state_sha256":"8a0aa8ec421bde25d472946e78b56c87687aa0571be22df818406448d0e822ab"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s5btJGLnc4nXzLK6lOUkPwnmEDIV1pFLM4p5PgAsHGoib7KIhBf+BUQ5OrbLM3VzUTimhzMUHzFRM7rsV1xmDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T12:16:26.642335Z","bundle_sha256":"e8015c67e46a8f1138631da1f1be139392ba02b47f420b44cc3fbb7595519d99"}}