{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:2JDEHUCK5DPTREQ4ENZZS6TDXV","short_pith_number":"pith:2JDEHUCK","canonical_record":{"source":{"id":"1109.2914","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-09-13T20:21:57Z","cross_cats_sorted":[],"title_canon_sha256":"10227ce36e8ceab641318096f038810e7e85abd168b6616374795511ef113500","abstract_canon_sha256":"684e14918513409017feecb3653e6c362f94535d5832d150297de6a8f370bc23"},"schema_version":"1.0"},"canonical_sha256":"d24643d04ae8df38921c2373997a63bd4159a03a36d67699ba75554248de84dc","source":{"kind":"arxiv","id":"1109.2914","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.2914","created_at":"2026-05-18T02:00:33Z"},{"alias_kind":"arxiv_version","alias_value":"1109.2914v1","created_at":"2026-05-18T02:00:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.2914","created_at":"2026-05-18T02:00:33Z"},{"alias_kind":"pith_short_12","alias_value":"2JDEHUCK5DPT","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"2JDEHUCK5DPTREQ4","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"2JDEHUCK","created_at":"2026-05-18T12:26:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:2JDEHUCK5DPTREQ4ENZZS6TDXV","target":"record","payload":{"canonical_record":{"source":{"id":"1109.2914","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-09-13T20:21:57Z","cross_cats_sorted":[],"title_canon_sha256":"10227ce36e8ceab641318096f038810e7e85abd168b6616374795511ef113500","abstract_canon_sha256":"684e14918513409017feecb3653e6c362f94535d5832d150297de6a8f370bc23"},"schema_version":"1.0"},"canonical_sha256":"d24643d04ae8df38921c2373997a63bd4159a03a36d67699ba75554248de84dc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:00:33.337917Z","signature_b64":"Gi5P0omDTlRlz0VavLzWWrlOMZSvl3HP05Da8peqbCG+FXI1j0Wrur97ur9tcP+8pX7RLU3Wu7jsgsPP4Tj6AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d24643d04ae8df38921c2373997a63bd4159a03a36d67699ba75554248de84dc","last_reissued_at":"2026-05-18T02:00:33.337423Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:00:33.337423Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1109.2914","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":"2026-05-18T02:00:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IOgeLaJCINooCjdCUM7evaV63NChBSGyGAwlAjQHWj9McWspFx8hwy5PbBqOOLFW/QlLrlW2rbenVMWMwBT+Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T08:39:51.778623Z"},"content_sha256":"ae9fe8e8e8dfd4edea4c6b5d057963ce02cfaf01a65a8cd10870336c8776beb3","schema_version":"1.0","event_id":"sha256:ae9fe8e8e8dfd4edea4c6b5d057963ce02cfaf01a65a8cd10870336c8776beb3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:2JDEHUCK5DPTREQ4ENZZS6TDXV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hunting the Coolest Dwarfs: Methods and Early Results","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Adam Schneider, Ben Zuckerman, Carl Melis, Inseok Song","submitted_at":"2011-09-13T20:21:57Z","abstract_excerpt":"We present the methods and first results of a survey of nearby high proper motion main sequence stars to probe for cool companions with the Gemini camera at Lick Observatory. This survey uses a sample of old (age > 2 Gyr) stars as targets to probe for companions down to temperatures of 500 K. Multi-epoch observations allow us to discriminate comoving companions from background objects. So far, our survey successfully re-discovers the wide T8.5 companion to GJ 1263 and discovers a companion to the nearby M0V star GJ 660.1. The companion to GJ 660.1 (GJ 660.1B) is ~4 magnitudes fainter than its "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.2914","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":"2026-05-18T02:00:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IOGh5NPtjI2TsdGdUWYdd2H+tvJMokuxsRori2VtQQOjIZcX9NzIr782rXU/utaB9R/x3msRneISukDLgMe9Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T08:39:51.778966Z"},"content_sha256":"b10b5e3e64cb5d4a80359f68187c1ab45c9a8e0e3964a96ece99bad5805ff2e3","schema_version":"1.0","event_id":"sha256:b10b5e3e64cb5d4a80359f68187c1ab45c9a8e0e3964a96ece99bad5805ff2e3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2JDEHUCK5DPTREQ4ENZZS6TDXV/bundle.json","state_url":"https://pith.science/pith/2JDEHUCK5DPTREQ4ENZZS6TDXV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2JDEHUCK5DPTREQ4ENZZS6TDXV/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":"2026-06-01T08:39:51Z","links":{"resolver":"https://pith.science/pith/2JDEHUCK5DPTREQ4ENZZS6TDXV","bundle":"https://pith.science/pith/2JDEHUCK5DPTREQ4ENZZS6TDXV/bundle.json","state":"https://pith.science/pith/2JDEHUCK5DPTREQ4ENZZS6TDXV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2JDEHUCK5DPTREQ4ENZZS6TDXV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:2JDEHUCK5DPTREQ4ENZZS6TDXV","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":"684e14918513409017feecb3653e6c362f94535d5832d150297de6a8f370bc23","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-09-13T20:21:57Z","title_canon_sha256":"10227ce36e8ceab641318096f038810e7e85abd168b6616374795511ef113500"},"schema_version":"1.0","source":{"id":"1109.2914","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.2914","created_at":"2026-05-18T02:00:33Z"},{"alias_kind":"arxiv_version","alias_value":"1109.2914v1","created_at":"2026-05-18T02:00:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.2914","created_at":"2026-05-18T02:00:33Z"},{"alias_kind":"pith_short_12","alias_value":"2JDEHUCK5DPT","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"2JDEHUCK5DPTREQ4","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"2JDEHUCK","created_at":"2026-05-18T12:26:18Z"}],"graph_snapshots":[{"event_id":"sha256:b10b5e3e64cb5d4a80359f68187c1ab45c9a8e0e3964a96ece99bad5805ff2e3","target":"graph","created_at":"2026-05-18T02:00:33Z","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 present the methods and first results of a survey of nearby high proper motion main sequence stars to probe for cool companions with the Gemini camera at Lick Observatory. This survey uses a sample of old (age > 2 Gyr) stars as targets to probe for companions down to temperatures of 500 K. Multi-epoch observations allow us to discriminate comoving companions from background objects. So far, our survey successfully re-discovers the wide T8.5 companion to GJ 1263 and discovers a companion to the nearby M0V star GJ 660.1. The companion to GJ 660.1 (GJ 660.1B) is ~4 magnitudes fainter than its ","authors_text":"Adam Schneider, Ben Zuckerman, Carl Melis, Inseok Song","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-09-13T20:21:57Z","title":"Hunting the Coolest Dwarfs: Methods and Early Results"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.2914","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:ae9fe8e8e8dfd4edea4c6b5d057963ce02cfaf01a65a8cd10870336c8776beb3","target":"record","created_at":"2026-05-18T02:00:33Z","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":"684e14918513409017feecb3653e6c362f94535d5832d150297de6a8f370bc23","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-09-13T20:21:57Z","title_canon_sha256":"10227ce36e8ceab641318096f038810e7e85abd168b6616374795511ef113500"},"schema_version":"1.0","source":{"id":"1109.2914","kind":"arxiv","version":1}},"canonical_sha256":"d24643d04ae8df38921c2373997a63bd4159a03a36d67699ba75554248de84dc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d24643d04ae8df38921c2373997a63bd4159a03a36d67699ba75554248de84dc","first_computed_at":"2026-05-18T02:00:33.337423Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:00:33.337423Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Gi5P0omDTlRlz0VavLzWWrlOMZSvl3HP05Da8peqbCG+FXI1j0Wrur97ur9tcP+8pX7RLU3Wu7jsgsPP4Tj6AA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:00:33.337917Z","signed_message":"canonical_sha256_bytes"},"source_id":"1109.2914","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ae9fe8e8e8dfd4edea4c6b5d057963ce02cfaf01a65a8cd10870336c8776beb3","sha256:b10b5e3e64cb5d4a80359f68187c1ab45c9a8e0e3964a96ece99bad5805ff2e3"],"state_sha256":"626821f741f8d60978b0ef15f4f3b7bf2f7e793735ca04a496686432e28999df"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v4XN+UZBDnPXEoRYfpamiwW3mJUyG2bSEy78n0wpU+oNbbStG0ojm8y24exP0jwPdy1+45o6NCRpza5bfclmBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T08:39:51.781192Z","bundle_sha256":"aa1333d428e4f040260ac7066e93f9d6e78e4f9f1bd57948f96ae4a404ac6f82"}}