{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:HM4AOQUZXMIJWLQV5BZNY6U2RN","short_pith_number":"pith:HM4AOQUZ","canonical_record":{"source":{"id":"2405.20212","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-05-30T16:16:19Z","cross_cats_sorted":["astro-ph.GA","astro-ph.IM"],"title_canon_sha256":"b93b0ad83132bd90048871910aa74e2ada0e464234724227280617319b144062","abstract_canon_sha256":"dc6dfe6aa41addb9e526b5deed2fb85c41d61961a36e5592f1cb94f43beef250"},"schema_version":"1.0"},"canonical_sha256":"3b38074299bb109b2e15e872dc7a9a8b43fae7b59b1ca9117496804153a82fb8","source":{"kind":"arxiv","id":"2405.20212","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2405.20212","created_at":"2026-07-05T08:25:17Z"},{"alias_kind":"arxiv_version","alias_value":"2405.20212v1","created_at":"2026-07-05T08:25:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2405.20212","created_at":"2026-07-05T08:25:17Z"},{"alias_kind":"pith_short_12","alias_value":"HM4AOQUZXMIJ","created_at":"2026-07-05T08:25:17Z"},{"alias_kind":"pith_short_16","alias_value":"HM4AOQUZXMIJWLQV","created_at":"2026-07-05T08:25:17Z"},{"alias_kind":"pith_short_8","alias_value":"HM4AOQUZ","created_at":"2026-07-05T08:25:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:HM4AOQUZXMIJWLQV5BZNY6U2RN","target":"record","payload":{"canonical_record":{"source":{"id":"2405.20212","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-05-30T16:16:19Z","cross_cats_sorted":["astro-ph.GA","astro-ph.IM"],"title_canon_sha256":"b93b0ad83132bd90048871910aa74e2ada0e464234724227280617319b144062","abstract_canon_sha256":"dc6dfe6aa41addb9e526b5deed2fb85c41d61961a36e5592f1cb94f43beef250"},"schema_version":"1.0"},"canonical_sha256":"3b38074299bb109b2e15e872dc7a9a8b43fae7b59b1ca9117496804153a82fb8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:25:17.507807Z","signature_b64":"TmN1OepvMJo1scLBf07kd033NEN/2VP2Zn1dm6CF64f+g8u/vk9h7coIWD2O6ErZ1r2EyMx+95KBEiOZYG5xAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3b38074299bb109b2e15e872dc7a9a8b43fae7b59b1ca9117496804153a82fb8","last_reissued_at":"2026-07-05T08:25:17.507321Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:25:17.507321Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2405.20212","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":"2026-07-05T08:25:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qZoHT2cx9I9WEZ/R7mf9dJyQFm8LmF7przs+MbvoiR3ZPvYGe6HUuPmfUTpN4oS1OPuJAA9znxlGtwyEdxffCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T19:13:00.667069Z"},"content_sha256":"fb272fe24087b02ade5784be3f048ed1380d69400b10f7a528099a9344f9c785","schema_version":"1.0","event_id":"sha256:fb272fe24087b02ade5784be3f048ed1380d69400b10f7a528099a9344f9c785"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:HM4AOQUZXMIJWLQV5BZNY6U2RN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Filter Design for Estimation of Stellar Metallicity: Insights from Experiments with Gaia XP Spectra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.IM"],"primary_cat":"astro-ph.SR","authors_text":"Bowen Huang, Bowen Zhang, Chuanjie Zheng, Haibo Yuan, Jifeng Liu, Kai Xiao, Lin Yang, Maosheng Xiang, Ruifeng Shi, Shuai Xu, Timothy C. Beers, Xue Lu, Yang Huang, Zhirui Li","submitted_at":"2024-05-30T16:16:19Z","abstract_excerpt":"We search for an optimal filter design for the estimation of stellar metallicity, based on synthetic photometry from Gaia XP spectra convolved with a series of filter-transmission curves defined by different central wavelengths and bandwidths. Unlike previous designs based solely on maximizing metallicity sensitivity, we find that the optimal solution provides a balance between the sensitivity and uncertainty of the spectra. With this optimal filter design, the best precision of metallicity estimates for relatively bright ($G \\sim 11.5$) stars is excellent, $\\sigma_{\\rm [Fe/H]} = 0.034$\\,dex f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2405.20212","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2405.20212/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":"2026-07-05T08:25:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zcA0jtCVhK1QrrfdkPitc5JyLKaV9UCybxWG4APfpWdoUqgQ7xWZmIAZH/7oX3YEnJl2ncom1w49K72oB/gOCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T19:13:00.667589Z"},"content_sha256":"06572e43958e84f482d8d25715cbd898180b17d98f910b091edd61509308ec61","schema_version":"1.0","event_id":"sha256:06572e43958e84f482d8d25715cbd898180b17d98f910b091edd61509308ec61"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HM4AOQUZXMIJWLQV5BZNY6U2RN/bundle.json","state_url":"https://pith.science/pith/HM4AOQUZXMIJWLQV5BZNY6U2RN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HM4AOQUZXMIJWLQV5BZNY6U2RN/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":"2026-08-19T19:13:00Z","links":{"resolver":"https://pith.science/pith/HM4AOQUZXMIJWLQV5BZNY6U2RN","bundle":"https://pith.science/pith/HM4AOQUZXMIJWLQV5BZNY6U2RN/bundle.json","state":"https://pith.science/pith/HM4AOQUZXMIJWLQV5BZNY6U2RN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HM4AOQUZXMIJWLQV5BZNY6U2RN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:HM4AOQUZXMIJWLQV5BZNY6U2RN","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":"dc6dfe6aa41addb9e526b5deed2fb85c41d61961a36e5592f1cb94f43beef250","cross_cats_sorted":["astro-ph.GA","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-05-30T16:16:19Z","title_canon_sha256":"b93b0ad83132bd90048871910aa74e2ada0e464234724227280617319b144062"},"schema_version":"1.0","source":{"id":"2405.20212","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2405.20212","created_at":"2026-07-05T08:25:17Z"},{"alias_kind":"arxiv_version","alias_value":"2405.20212v1","created_at":"2026-07-05T08:25:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2405.20212","created_at":"2026-07-05T08:25:17Z"},{"alias_kind":"pith_short_12","alias_value":"HM4AOQUZXMIJ","created_at":"2026-07-05T08:25:17Z"},{"alias_kind":"pith_short_16","alias_value":"HM4AOQUZXMIJWLQV","created_at":"2026-07-05T08:25:17Z"},{"alias_kind":"pith_short_8","alias_value":"HM4AOQUZ","created_at":"2026-07-05T08:25:17Z"}],"graph_snapshots":[{"event_id":"sha256:06572e43958e84f482d8d25715cbd898180b17d98f910b091edd61509308ec61","target":"graph","created_at":"2026-07-05T08:25:17Z","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/2405.20212/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We search for an optimal filter design for the estimation of stellar metallicity, based on synthetic photometry from Gaia XP spectra convolved with a series of filter-transmission curves defined by different central wavelengths and bandwidths. Unlike previous designs based solely on maximizing metallicity sensitivity, we find that the optimal solution provides a balance between the sensitivity and uncertainty of the spectra. With this optimal filter design, the best precision of metallicity estimates for relatively bright ($G \\sim 11.5$) stars is excellent, $\\sigma_{\\rm [Fe/H]} = 0.034$\\,dex f","authors_text":"Bowen Huang, Bowen Zhang, Chuanjie Zheng, Haibo Yuan, Jifeng Liu, Kai Xiao, Lin Yang, Maosheng Xiang, Ruifeng Shi, Shuai Xu, Timothy C. Beers, Xue Lu, Yang Huang, Zhirui Li","cross_cats":["astro-ph.GA","astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-05-30T16:16:19Z","title":"Filter Design for Estimation of Stellar Metallicity: Insights from Experiments with Gaia XP Spectra"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2405.20212","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:fb272fe24087b02ade5784be3f048ed1380d69400b10f7a528099a9344f9c785","target":"record","created_at":"2026-07-05T08:25:17Z","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":"dc6dfe6aa41addb9e526b5deed2fb85c41d61961a36e5592f1cb94f43beef250","cross_cats_sorted":["astro-ph.GA","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-05-30T16:16:19Z","title_canon_sha256":"b93b0ad83132bd90048871910aa74e2ada0e464234724227280617319b144062"},"schema_version":"1.0","source":{"id":"2405.20212","kind":"arxiv","version":1}},"canonical_sha256":"3b38074299bb109b2e15e872dc7a9a8b43fae7b59b1ca9117496804153a82fb8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3b38074299bb109b2e15e872dc7a9a8b43fae7b59b1ca9117496804153a82fb8","first_computed_at":"2026-07-05T08:25:17.507321Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:25:17.507321Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TmN1OepvMJo1scLBf07kd033NEN/2VP2Zn1dm6CF64f+g8u/vk9h7coIWD2O6ErZ1r2EyMx+95KBEiOZYG5xAw==","signature_status":"signed_v1","signed_at":"2026-07-05T08:25:17.507807Z","signed_message":"canonical_sha256_bytes"},"source_id":"2405.20212","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fb272fe24087b02ade5784be3f048ed1380d69400b10f7a528099a9344f9c785","sha256:06572e43958e84f482d8d25715cbd898180b17d98f910b091edd61509308ec61"],"state_sha256":"30e6ccc9bfb6e08d4eec87a267ac893d6a79f1e3f64c21866092247e960d39a5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TGRxSncY9BZ6j8WRtR1osONLb4bvxbuO9WhYi+ED1oVHT8YzIuEiIIkoWDYw1/c0MFIfvuwVSl8pCWuMNcd3BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T19:13:00.674151Z","bundle_sha256":"68ee50f043bfda0f48671fe8c64fb66cc7784995e75c43a87013cac71cbdfdbc"}}