{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:ODFFHTBSYCHRWSMXMVQNYMYERK","short_pith_number":"pith:ODFFHTBS","canonical_record":{"source":{"id":"1611.08598","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-25T21:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"2c79f67098cf11e501e8e3f3b5863a81298fc1400409317668c6cc29a96a991f","abstract_canon_sha256":"c633be8a5478168ce3701b47743a75ab2a1c1c16c726c2fb4ee9a2b2c58ca4b3"},"schema_version":"1.0"},"canonical_sha256":"70ca53cc32c08f1b49976560dc33048a907f9bab516c9f617cfeb82c06296289","source":{"kind":"arxiv","id":"1611.08598","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.08598","created_at":"2026-05-18T00:44:51Z"},{"alias_kind":"arxiv_version","alias_value":"1611.08598v3","created_at":"2026-05-18T00:44:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.08598","created_at":"2026-05-18T00:44:51Z"},{"alias_kind":"pith_short_12","alias_value":"ODFFHTBSYCHR","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_16","alias_value":"ODFFHTBSYCHRWSMX","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_8","alias_value":"ODFFHTBS","created_at":"2026-05-18T12:30:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:ODFFHTBSYCHRWSMXMVQNYMYERK","target":"record","payload":{"canonical_record":{"source":{"id":"1611.08598","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-25T21:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"2c79f67098cf11e501e8e3f3b5863a81298fc1400409317668c6cc29a96a991f","abstract_canon_sha256":"c633be8a5478168ce3701b47743a75ab2a1c1c16c726c2fb4ee9a2b2c58ca4b3"},"schema_version":"1.0"},"canonical_sha256":"70ca53cc32c08f1b49976560dc33048a907f9bab516c9f617cfeb82c06296289","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:44:51.978944Z","signature_b64":"PItErUJIA2FiTIn+OWNyXAx5cl2ma9TkiH6bktb7SRat8L3GmEwDwXYiExQAH2j5O8RmlvKP75FBJbmf2BgeAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"70ca53cc32c08f1b49976560dc33048a907f9bab516c9f617cfeb82c06296289","last_reissued_at":"2026-05-18T00:44:51.978210Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:44:51.978210Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1611.08598","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:44:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bOPurV27Xb/hf6/YKR867jZ3r50j4G3aTCVI/RCp9yEO4rhrOMVBFzqadGabLpcjSCoG2f7N3H2fNfNN8gBDBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:58:27.514039Z"},"content_sha256":"94e38da6c231723aae1ec1a7af6efbd78e4ed14fd0127b1349ff4888e27af8c0","schema_version":"1.0","event_id":"sha256:94e38da6c231723aae1ec1a7af6efbd78e4ed14fd0127b1349ff4888e27af8c0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:ODFFHTBSYCHRWSMXMVQNYMYERK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Proper Motion of Pyxis: the first use of Adaptive Optics in tandem with HST on a faint halo object","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Benoit Neichel, Dylan Angell, Eleazar R. Carrasco, Gulliermo J. Damke, Jo Bovy, Laura V. Sales, Michael Boylan-Kolchin, Nitya Kallivayalil, Paul Zivick, Rachael L. Beaton, Richard I. Davies, Roeland P. van der Marel, Sangmo Tony Sohn, Sean T. Linden, Steve R. Majewski, Tobias K. Fritz","submitted_at":"2016-11-25T21:00:01Z","abstract_excerpt":"We present a proper motion measurement for the halo globular cluster Pyxis, using HST/ACS data as the first epoch, and GeMS/GSAOI Adaptive Optics data as the second, separated by a baseline of about 5 years. This is both the first measurement of the proper motion of Pyxis and the first calibration and use of Multi-Conjugate Adaptive Optics data to measure an absolute proper motion for a faint, distant halo object. Consequently, we present our analysis of the Adaptive Optics data in detail. We obtain a proper motion of mu_alpha cos(delta)=1.09+/-0.31 mas/yr and mu_delta=0.68+/-0.29 mas/yr. From"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.08598","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":""},"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":"2026-05-18T00:44:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Xzot+PDQrZTvmh9pcY5Ev4XY33hJLXKYtA19+Ohh8bI8qWnhFRjkx8O63Mw//GUfHwd5hSfdiVQADSmtrhv5CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:58:27.514765Z"},"content_sha256":"39556670a7904795c292aeecfb6d17b651739bf501a5395ce50556ee56832c5b","schema_version":"1.0","event_id":"sha256:39556670a7904795c292aeecfb6d17b651739bf501a5395ce50556ee56832c5b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ODFFHTBSYCHRWSMXMVQNYMYERK/bundle.json","state_url":"https://pith.science/pith/ODFFHTBSYCHRWSMXMVQNYMYERK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ODFFHTBSYCHRWSMXMVQNYMYERK/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":"2026-05-25T21:58:27Z","links":{"resolver":"https://pith.science/pith/ODFFHTBSYCHRWSMXMVQNYMYERK","bundle":"https://pith.science/pith/ODFFHTBSYCHRWSMXMVQNYMYERK/bundle.json","state":"https://pith.science/pith/ODFFHTBSYCHRWSMXMVQNYMYERK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ODFFHTBSYCHRWSMXMVQNYMYERK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:ODFFHTBSYCHRWSMXMVQNYMYERK","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":"c633be8a5478168ce3701b47743a75ab2a1c1c16c726c2fb4ee9a2b2c58ca4b3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-25T21:00:01Z","title_canon_sha256":"2c79f67098cf11e501e8e3f3b5863a81298fc1400409317668c6cc29a96a991f"},"schema_version":"1.0","source":{"id":"1611.08598","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.08598","created_at":"2026-05-18T00:44:51Z"},{"alias_kind":"arxiv_version","alias_value":"1611.08598v3","created_at":"2026-05-18T00:44:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.08598","created_at":"2026-05-18T00:44:51Z"},{"alias_kind":"pith_short_12","alias_value":"ODFFHTBSYCHR","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_16","alias_value":"ODFFHTBSYCHRWSMX","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_8","alias_value":"ODFFHTBS","created_at":"2026-05-18T12:30:36Z"}],"graph_snapshots":[{"event_id":"sha256:39556670a7904795c292aeecfb6d17b651739bf501a5395ce50556ee56832c5b","target":"graph","created_at":"2026-05-18T00:44:51Z","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 proper motion measurement for the halo globular cluster Pyxis, using HST/ACS data as the first epoch, and GeMS/GSAOI Adaptive Optics data as the second, separated by a baseline of about 5 years. This is both the first measurement of the proper motion of Pyxis and the first calibration and use of Multi-Conjugate Adaptive Optics data to measure an absolute proper motion for a faint, distant halo object. Consequently, we present our analysis of the Adaptive Optics data in detail. We obtain a proper motion of mu_alpha cos(delta)=1.09+/-0.31 mas/yr and mu_delta=0.68+/-0.29 mas/yr. From","authors_text":"Benoit Neichel, Dylan Angell, Eleazar R. Carrasco, Gulliermo J. Damke, Jo Bovy, Laura V. Sales, Michael Boylan-Kolchin, Nitya Kallivayalil, Paul Zivick, Rachael L. Beaton, Richard I. Davies, Roeland P. van der Marel, Sangmo Tony Sohn, Sean T. Linden, Steve R. Majewski, Tobias K. Fritz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-25T21:00:01Z","title":"The Proper Motion of Pyxis: the first use of Adaptive Optics in tandem with HST on a faint halo object"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.08598","kind":"arxiv","version":3},"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":"sha256:94e38da6c231723aae1ec1a7af6efbd78e4ed14fd0127b1349ff4888e27af8c0","target":"record","created_at":"2026-05-18T00:44:51Z","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":"c633be8a5478168ce3701b47743a75ab2a1c1c16c726c2fb4ee9a2b2c58ca4b3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-25T21:00:01Z","title_canon_sha256":"2c79f67098cf11e501e8e3f3b5863a81298fc1400409317668c6cc29a96a991f"},"schema_version":"1.0","source":{"id":"1611.08598","kind":"arxiv","version":3}},"canonical_sha256":"70ca53cc32c08f1b49976560dc33048a907f9bab516c9f617cfeb82c06296289","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"70ca53cc32c08f1b49976560dc33048a907f9bab516c9f617cfeb82c06296289","first_computed_at":"2026-05-18T00:44:51.978210Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:44:51.978210Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PItErUJIA2FiTIn+OWNyXAx5cl2ma9TkiH6bktb7SRat8L3GmEwDwXYiExQAH2j5O8RmlvKP75FBJbmf2BgeAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:44:51.978944Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.08598","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:94e38da6c231723aae1ec1a7af6efbd78e4ed14fd0127b1349ff4888e27af8c0","sha256:39556670a7904795c292aeecfb6d17b651739bf501a5395ce50556ee56832c5b"],"state_sha256":"e949f20e11f472bb68a70affe451538e4de6684e9dabf6644949c3d254e81ea5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z/7G7rBmSOlL/SFYmDqDYgcCGF4Q3DXQHv9xFAJoprYtGpDXaeTb3uARNR+ehi+Me6MxAJSjtmFpCi419M5zBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T21:58:27.519209Z","bundle_sha256":"06a3cdbeedc509a92324c48794510841bc8ad9fb394ded490e8d6daa21bb6df3"}}