{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:JD7KIDI6PGHLSRF5SD5F5RVJAC","short_pith_number":"pith:JD7KIDI6","canonical_record":{"source":{"id":"2503.05927","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-03-07T20:48:22Z","cross_cats_sorted":["astro-ph.CO","astro-ph.IM"],"title_canon_sha256":"a8e2cb23d1f380c4d0ce3839a377197f11fe35361f2782cee21cf56703886dee","abstract_canon_sha256":"ac0d660e3e5c3e6b69b7d30c223498802a5aac5a620b9cbc01ffe67143d226f9"},"schema_version":"1.0"},"canonical_sha256":"48fea40d1e798eb944bd90fa5ec6a900ba2bb09bec2da892d4a982fcc91cc7f4","source":{"kind":"arxiv","id":"2503.05927","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.05927","created_at":"2026-07-05T11:16:07Z"},{"alias_kind":"arxiv_version","alias_value":"2503.05927v3","created_at":"2026-07-05T11:16:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.05927","created_at":"2026-07-05T11:16:07Z"},{"alias_kind":"pith_short_12","alias_value":"JD7KIDI6PGHL","created_at":"2026-07-05T11:16:07Z"},{"alias_kind":"pith_short_16","alias_value":"JD7KIDI6PGHLSRF5","created_at":"2026-07-05T11:16:07Z"},{"alias_kind":"pith_short_8","alias_value":"JD7KIDI6","created_at":"2026-07-05T11:16:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:JD7KIDI6PGHLSRF5SD5F5RVJAC","target":"record","payload":{"canonical_record":{"source":{"id":"2503.05927","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-03-07T20:48:22Z","cross_cats_sorted":["astro-ph.CO","astro-ph.IM"],"title_canon_sha256":"a8e2cb23d1f380c4d0ce3839a377197f11fe35361f2782cee21cf56703886dee","abstract_canon_sha256":"ac0d660e3e5c3e6b69b7d30c223498802a5aac5a620b9cbc01ffe67143d226f9"},"schema_version":"1.0"},"canonical_sha256":"48fea40d1e798eb944bd90fa5ec6a900ba2bb09bec2da892d4a982fcc91cc7f4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:16:07.108817Z","signature_b64":"V+KavKK8nGziZg88UG05A57cq1EZQxKExM27FcQsQUVjIfKwaHyzbaH5/XNgd5XWcobhfM9E/N6feV9+S3UVBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"48fea40d1e798eb944bd90fa5ec6a900ba2bb09bec2da892d4a982fcc91cc7f4","last_reissued_at":"2026-07-05T11:16:07.108256Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:16:07.108256Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2503.05927","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":"2026-07-05T11:16:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r+5W5OrVdlF96d6PVK29MU/9g385IciQ/NUQ4TlD24gqHBVg529PV8KF9baXBJuL5jZPs1cdTfm1YO6ZPFHtDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T06:54:51.698756Z"},"content_sha256":"537a8397d26a69b8f4c911d8858a7a0a5fbc57e09dabdcabc11cc09ad0e5a5bb","schema_version":"1.0","event_id":"sha256:537a8397d26a69b8f4c911d8858a7a0a5fbc57e09dabdcabc11cc09ad0e5a5bb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:JD7KIDI6PGHLSRF5SD5F5RVJAC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"GHOST commissioning science results -- IV: Chemodynamical analyses of Milky Way satellites Sagittarius II and Aquarius II","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.IM"],"primary_cat":"astro-ph.GA","authors_text":"Alan W. McConnachie, Andr\\'e Anthony, Bryan Miller, Christian R. Hayes, Daria Zaremba, Dave Andersen, David Henderson, Federico Sestito, Gabriella Baker, Jaclyn Jensen, Jennifer Glover, J. Gordon Robertson, John Pazder, Jon Lawrence, Julio F. Navarro, Karleyne Silva, Katherine Silversides, Kim Venn, Manuel Gomez-Jimenez, Peter J. Young, Rapha\\\"el Errani, Roque Ruiz-Carmona, Ross Zhelem, Ruben Diaz, Steve Margheim, Timothy Chin, Tony Farrell, Triana Cornejo, Venu M. Kalari, Veronica Firpo, Vladimir Churilov","submitted_at":"2025-03-07T20:48:22Z","abstract_excerpt":"We present Gemini/GHOST high-resolution spectra of five stars observed in two low surface brightness Milky Way satellites, Sagittarius II (Sgr2) and Aquarius II (Aqu2). For Aqu2, the velocities and metallicities of the two stars are consistent with membership in a dark matter-dominated ultra faint dwarf galaxy (UFD). The chemical abundance ratios suggest inefficient star formation from only one or a few supernovae (e.g., low Na, Sr, Ba), and enriched potassium (K) from super-AGB stars. For Sgr2, the velocity and metallicity dispersions of its members are not clearly resolved and our detailed c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.05927","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/2503.05927/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:16:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oLCROrwfcbC0n5h/LTY5prfzmBgxHG5MeeUOrraX35CcLK+AafclM09JrMAvXr+umX0w0mRXJ0Bp7Fl9cm/wCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T06:54:51.699131Z"},"content_sha256":"6dc683759641e55d67f139a7868a32c5798c93b31dc20d5e0fc70d277151e129","schema_version":"1.0","event_id":"sha256:6dc683759641e55d67f139a7868a32c5798c93b31dc20d5e0fc70d277151e129"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JD7KIDI6PGHLSRF5SD5F5RVJAC/bundle.json","state_url":"https://pith.science/pith/JD7KIDI6PGHLSRF5SD5F5RVJAC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JD7KIDI6PGHLSRF5SD5F5RVJAC/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":"2026-07-09T06:54:51Z","links":{"resolver":"https://pith.science/pith/JD7KIDI6PGHLSRF5SD5F5RVJAC","bundle":"https://pith.science/pith/JD7KIDI6PGHLSRF5SD5F5RVJAC/bundle.json","state":"https://pith.science/pith/JD7KIDI6PGHLSRF5SD5F5RVJAC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JD7KIDI6PGHLSRF5SD5F5RVJAC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:JD7KIDI6PGHLSRF5SD5F5RVJAC","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":"ac0d660e3e5c3e6b69b7d30c223498802a5aac5a620b9cbc01ffe67143d226f9","cross_cats_sorted":["astro-ph.CO","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-03-07T20:48:22Z","title_canon_sha256":"a8e2cb23d1f380c4d0ce3839a377197f11fe35361f2782cee21cf56703886dee"},"schema_version":"1.0","source":{"id":"2503.05927","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.05927","created_at":"2026-07-05T11:16:07Z"},{"alias_kind":"arxiv_version","alias_value":"2503.05927v3","created_at":"2026-07-05T11:16:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.05927","created_at":"2026-07-05T11:16:07Z"},{"alias_kind":"pith_short_12","alias_value":"JD7KIDI6PGHL","created_at":"2026-07-05T11:16:07Z"},{"alias_kind":"pith_short_16","alias_value":"JD7KIDI6PGHLSRF5","created_at":"2026-07-05T11:16:07Z"},{"alias_kind":"pith_short_8","alias_value":"JD7KIDI6","created_at":"2026-07-05T11:16:07Z"}],"graph_snapshots":[{"event_id":"sha256:6dc683759641e55d67f139a7868a32c5798c93b31dc20d5e0fc70d277151e129","target":"graph","created_at":"2026-07-05T11:16:07Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2503.05927/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present Gemini/GHOST high-resolution spectra of five stars observed in two low surface brightness Milky Way satellites, Sagittarius II (Sgr2) and Aquarius II (Aqu2). For Aqu2, the velocities and metallicities of the two stars are consistent with membership in a dark matter-dominated ultra faint dwarf galaxy (UFD). The chemical abundance ratios suggest inefficient star formation from only one or a few supernovae (e.g., low Na, Sr, Ba), and enriched potassium (K) from super-AGB stars. For Sgr2, the velocity and metallicity dispersions of its members are not clearly resolved and our detailed c","authors_text":"Alan W. McConnachie, Andr\\'e Anthony, Bryan Miller, Christian R. Hayes, Daria Zaremba, Dave Andersen, David Henderson, Federico Sestito, Gabriella Baker, Jaclyn Jensen, Jennifer Glover, J. Gordon Robertson, John Pazder, Jon Lawrence, Julio F. Navarro, Karleyne Silva, Katherine Silversides, Kim Venn, Manuel Gomez-Jimenez, Peter J. Young, Rapha\\\"el Errani, Roque Ruiz-Carmona, Ross Zhelem, Ruben Diaz, Steve Margheim, Timothy Chin, Tony Farrell, Triana Cornejo, Venu M. Kalari, Veronica Firpo, Vladimir Churilov","cross_cats":["astro-ph.CO","astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-03-07T20:48:22Z","title":"GHOST commissioning science results -- IV: Chemodynamical analyses of Milky Way satellites Sagittarius II and Aquarius II"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.05927","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":"sha256:537a8397d26a69b8f4c911d8858a7a0a5fbc57e09dabdcabc11cc09ad0e5a5bb","target":"record","created_at":"2026-07-05T11:16:07Z","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":"ac0d660e3e5c3e6b69b7d30c223498802a5aac5a620b9cbc01ffe67143d226f9","cross_cats_sorted":["astro-ph.CO","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-03-07T20:48:22Z","title_canon_sha256":"a8e2cb23d1f380c4d0ce3839a377197f11fe35361f2782cee21cf56703886dee"},"schema_version":"1.0","source":{"id":"2503.05927","kind":"arxiv","version":3}},"canonical_sha256":"48fea40d1e798eb944bd90fa5ec6a900ba2bb09bec2da892d4a982fcc91cc7f4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"48fea40d1e798eb944bd90fa5ec6a900ba2bb09bec2da892d4a982fcc91cc7f4","first_computed_at":"2026-07-05T11:16:07.108256Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:16:07.108256Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"V+KavKK8nGziZg88UG05A57cq1EZQxKExM27FcQsQUVjIfKwaHyzbaH5/XNgd5XWcobhfM9E/N6feV9+S3UVBg==","signature_status":"signed_v1","signed_at":"2026-07-05T11:16:07.108817Z","signed_message":"canonical_sha256_bytes"},"source_id":"2503.05927","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:537a8397d26a69b8f4c911d8858a7a0a5fbc57e09dabdcabc11cc09ad0e5a5bb","sha256:6dc683759641e55d67f139a7868a32c5798c93b31dc20d5e0fc70d277151e129"],"state_sha256":"5cc18da6d1fe3e66dbfc7adbdd85072abc1b818f77e64abc198bf30cc8ab939c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0fwII3h6zjkHghRPJ+KJBX6Nn/sloGTOID/dTltmgGc48TZcY7+DLbyarN4SFiB+ZPGLfEiPYE3ymduYESG+Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-09T06:54:51.701610Z","bundle_sha256":"fdbf779576bccfd7216b1992facbdadc409597a46047438ed0b7f2472e814277"}}