{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:Y3QXEVU65CGUNDVLAE75CVL5G6","short_pith_number":"pith:Y3QXEVU6","canonical_record":{"source":{"id":"1202.0300","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-01T21:27:15Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"2327bca124a6b0dfc1297e3bf5cae8dd53c6a0971772bde6acc40a911a262dbb","abstract_canon_sha256":"129ceb3ee63de247add8ba5e14be488cbc8c89673c1b28a2d477be4164368b90"},"schema_version":"1.0"},"canonical_sha256":"c6e172569ee88d468eab013fd1557d378b26f497245b5aab892d0e70b4aa6521","source":{"kind":"arxiv","id":"1202.0300","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.0300","created_at":"2026-05-18T01:58:36Z"},{"alias_kind":"arxiv_version","alias_value":"1202.0300v1","created_at":"2026-05-18T01:58:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.0300","created_at":"2026-05-18T01:58:36Z"},{"alias_kind":"pith_short_12","alias_value":"Y3QXEVU65CGU","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"Y3QXEVU65CGUNDVL","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"Y3QXEVU6","created_at":"2026-05-18T12:27:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:Y3QXEVU65CGUNDVLAE75CVL5G6","target":"record","payload":{"canonical_record":{"source":{"id":"1202.0300","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-01T21:27:15Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"2327bca124a6b0dfc1297e3bf5cae8dd53c6a0971772bde6acc40a911a262dbb","abstract_canon_sha256":"129ceb3ee63de247add8ba5e14be488cbc8c89673c1b28a2d477be4164368b90"},"schema_version":"1.0"},"canonical_sha256":"c6e172569ee88d468eab013fd1557d378b26f497245b5aab892d0e70b4aa6521","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:36.570571Z","signature_b64":"C6jhi/vUoRGVHKWN60AUJkLVOJQ9zgOsRXKysvfxm9F1sgAVXqLeT4BQWvYRRSH4DoXpRX5jK09DU9yDeLeVDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c6e172569ee88d468eab013fd1557d378b26f497245b5aab892d0e70b4aa6521","last_reissued_at":"2026-05-18T01:58:36.569873Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:36.569873Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1202.0300","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":"2026-05-18T01:58:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NLgS7PsZopUv+4/Wdu3/aeeB1nfsR96zRhPeRY9uetiXcKoOUxx2woWVF/1fBHm5ZDHB6KT82MqIxvwfOQS0Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T06:12:30.029838Z"},"content_sha256":"65add3406561e8425ed7af2a403ccdb6a79b8365b9adfe0784d4261ab9f7d8a1","schema_version":"1.0","event_id":"sha256:65add3406561e8425ed7af2a403ccdb6a79b8365b9adfe0784d4261ab9f7d8a1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:Y3QXEVU65CGUNDVLAE75CVL5G6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Precise Infrared Radial Velocities from Keck/NIRSPEC and the Search for Young Planets","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.SR","authors_text":"Angelle M. Tanner, Cullen H. Blake, Dave Charbonneau, Guillermo Torres, John I. Bailey III, Russel J. White, Travis S. Barman","submitted_at":"2012-02-01T21:27:15Z","abstract_excerpt":"We present a high-precision infrared radial velocity study of late-type stars using spectra obtained with NIRSPEC at the W. M. Keck Observatory. Radial velocity precisions of 50 m/s are achieved for old field mid-M dwarfs using telluric features for precise wavelength calibration. Using this technique, 20 young stars in the {\\beta} Pic (age ~12 Myr) and TW Hya (age ~8 Myr) Associations were monitored over several years to search for low mass companions; we also included the chromospherically active field star GJ 873 (EV Lac) in this survey. Based on comparisons with previous optical observatio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.0300","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":"2026-05-18T01:58:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2gnpKFnVbsh6GB6XAM8i5Xs0hdTCbJbsWx8iayVCAHVh5SjUHNBeiITxJWFKydyZGKS244wZ6j56jWBQVoAxDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T06:12:30.030476Z"},"content_sha256":"8f8f32bdeee379a577acb93b1af670e07a038d56038e0663e1975cb938791eca","schema_version":"1.0","event_id":"sha256:8f8f32bdeee379a577acb93b1af670e07a038d56038e0663e1975cb938791eca"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Y3QXEVU65CGUNDVLAE75CVL5G6/bundle.json","state_url":"https://pith.science/pith/Y3QXEVU65CGUNDVLAE75CVL5G6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Y3QXEVU65CGUNDVLAE75CVL5G6/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":"2026-05-27T06:12:30Z","links":{"resolver":"https://pith.science/pith/Y3QXEVU65CGUNDVLAE75CVL5G6","bundle":"https://pith.science/pith/Y3QXEVU65CGUNDVLAE75CVL5G6/bundle.json","state":"https://pith.science/pith/Y3QXEVU65CGUNDVLAE75CVL5G6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Y3QXEVU65CGUNDVLAE75CVL5G6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:Y3QXEVU65CGUNDVLAE75CVL5G6","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":"129ceb3ee63de247add8ba5e14be488cbc8c89673c1b28a2d477be4164368b90","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-01T21:27:15Z","title_canon_sha256":"2327bca124a6b0dfc1297e3bf5cae8dd53c6a0971772bde6acc40a911a262dbb"},"schema_version":"1.0","source":{"id":"1202.0300","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.0300","created_at":"2026-05-18T01:58:36Z"},{"alias_kind":"arxiv_version","alias_value":"1202.0300v1","created_at":"2026-05-18T01:58:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.0300","created_at":"2026-05-18T01:58:36Z"},{"alias_kind":"pith_short_12","alias_value":"Y3QXEVU65CGU","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"Y3QXEVU65CGUNDVL","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"Y3QXEVU6","created_at":"2026-05-18T12:27:27Z"}],"graph_snapshots":[{"event_id":"sha256:8f8f32bdeee379a577acb93b1af670e07a038d56038e0663e1975cb938791eca","target":"graph","created_at":"2026-05-18T01:58:36Z","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 a high-precision infrared radial velocity study of late-type stars using spectra obtained with NIRSPEC at the W. M. Keck Observatory. Radial velocity precisions of 50 m/s are achieved for old field mid-M dwarfs using telluric features for precise wavelength calibration. Using this technique, 20 young stars in the {\\beta} Pic (age ~12 Myr) and TW Hya (age ~8 Myr) Associations were monitored over several years to search for low mass companions; we also included the chromospherically active field star GJ 873 (EV Lac) in this survey. Based on comparisons with previous optical observatio","authors_text":"Angelle M. Tanner, Cullen H. Blake, Dave Charbonneau, Guillermo Torres, John I. Bailey III, Russel J. White, Travis S. Barman","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-01T21:27:15Z","title":"Precise Infrared Radial Velocities from Keck/NIRSPEC and the Search for Young Planets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.0300","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":"sha256:65add3406561e8425ed7af2a403ccdb6a79b8365b9adfe0784d4261ab9f7d8a1","target":"record","created_at":"2026-05-18T01:58:36Z","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":"129ceb3ee63de247add8ba5e14be488cbc8c89673c1b28a2d477be4164368b90","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-01T21:27:15Z","title_canon_sha256":"2327bca124a6b0dfc1297e3bf5cae8dd53c6a0971772bde6acc40a911a262dbb"},"schema_version":"1.0","source":{"id":"1202.0300","kind":"arxiv","version":1}},"canonical_sha256":"c6e172569ee88d468eab013fd1557d378b26f497245b5aab892d0e70b4aa6521","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c6e172569ee88d468eab013fd1557d378b26f497245b5aab892d0e70b4aa6521","first_computed_at":"2026-05-18T01:58:36.569873Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:36.569873Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"C6jhi/vUoRGVHKWN60AUJkLVOJQ9zgOsRXKysvfxm9F1sgAVXqLeT4BQWvYRRSH4DoXpRX5jK09DU9yDeLeVDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:36.570571Z","signed_message":"canonical_sha256_bytes"},"source_id":"1202.0300","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:65add3406561e8425ed7af2a403ccdb6a79b8365b9adfe0784d4261ab9f7d8a1","sha256:8f8f32bdeee379a577acb93b1af670e07a038d56038e0663e1975cb938791eca"],"state_sha256":"8e396a5d329796dd83bc26ec182f104d2ef85e10aaa534e512a48a784d79e324"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uzzHgI5BfkcAAYX2D6HNChvcAlz4D1kbk/5joNdXvhPCwJmIuTy710kBptfWkz2ePF5taQyEiDaa1338EFg1DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T06:12:30.033770Z","bundle_sha256":"922c19688ef5b08e7e32d50f8335469f0eb871cd295b6a1b769fc1cf9c5a0ccc"}}