{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:BUF35WVCJ4BOW3WG2HPY43EAKO","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":"41a9e162e0273438f2622603fa620676ff0e42ce62ec56878d5c196a3bf3d903","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-03-12T18:34:36Z","title_canon_sha256":"4ac7c3455a025a4a948b55368cf0b3ea5c719469917aa9911a2abda67f552e61"},"schema_version":"1.0","source":{"id":"2503.09734","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.09734","created_at":"2026-07-05T10:30:07Z"},{"alias_kind":"arxiv_version","alias_value":"2503.09734v1","created_at":"2026-07-05T10:30:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.09734","created_at":"2026-07-05T10:30:07Z"},{"alias_kind":"pith_short_12","alias_value":"BUF35WVCJ4BO","created_at":"2026-07-05T10:30:07Z"},{"alias_kind":"pith_short_16","alias_value":"BUF35WVCJ4BOW3WG","created_at":"2026-07-05T10:30:07Z"},{"alias_kind":"pith_short_8","alias_value":"BUF35WVC","created_at":"2026-07-05T10:30:07Z"}],"graph_snapshots":[{"event_id":"sha256:4b98626888aecc9c3224a8dd86388fe922eeabd5fd2a635f59694d202682e473","target":"graph","created_at":"2026-07-05T10:30:07Z","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/2503.09734/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a population synthesis model which addresses the different mass distributions of the metal-polluted and non-metal-polluted hydrogen-atmosphere white dwarfs identified in volume-limited samples. Specifically, metal-pollution has been observed to be rare in white dwarfs more massive than $\\approx$0.7 $M_{\\odot}$. Our population synthesis model invokes episodic accretion of planetary debris onto a synthetic population of white dwarfs. We find that the observed difference can be explained in the regime where most debris disks last for $10^4$$-$$10^6$ years. This is broadly consistent wi","authors_text":"David Charbonneau, Detlev Koester, Dimitri Veras, Evan B. Bauer, Mairi O'Brien, Mark A. Hollands, Muhammad Furqaan Yusaf, Pier-Emmanuel Tremblay, Scott J. Kenyon, Tim Cunningham","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-03-12T18:34:36Z","title":"The dearth of high-mass hydrogen-atmosphere metal-polluted white dwarfs within 40 pc"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.09734","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:b48e8d9d926ef4264dc984d6e3022eac351ab12f080f6d37c9b02088f4fb2276","target":"record","created_at":"2026-07-05T10:30:07Z","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":"41a9e162e0273438f2622603fa620676ff0e42ce62ec56878d5c196a3bf3d903","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-03-12T18:34:36Z","title_canon_sha256":"4ac7c3455a025a4a948b55368cf0b3ea5c719469917aa9911a2abda67f552e61"},"schema_version":"1.0","source":{"id":"2503.09734","kind":"arxiv","version":1}},"canonical_sha256":"0d0bbedaa24f02eb6ec6d1df8e6c805389be08b744918120cc749b7a4b79e3ba","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0d0bbedaa24f02eb6ec6d1df8e6c805389be08b744918120cc749b7a4b79e3ba","first_computed_at":"2026-07-05T10:30:07.172821Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:30:07.172821Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jqJcp5NiwgA6nvnLBJl7a70ZwNWvYS3wjFtKKdKocBRnybs7hz5p9mChXYi3Q/gWG6g4ovq79H/Al+e+tXdxAA==","signature_status":"signed_v1","signed_at":"2026-07-05T10:30:07.173335Z","signed_message":"canonical_sha256_bytes"},"source_id":"2503.09734","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b48e8d9d926ef4264dc984d6e3022eac351ab12f080f6d37c9b02088f4fb2276","sha256:4b98626888aecc9c3224a8dd86388fe922eeabd5fd2a635f59694d202682e473"],"state_sha256":"41c4d563c45486ade80c16f1f472ea6454db9368a3afba9f7b5fc5bca6580e0b"}