{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:JQQ73MV22DDIW4W6PGSSOSRVLL","short_pith_number":"pith:JQQ73MV2","schema_version":"1.0","canonical_sha256":"4c21fdb2bad0c68b72de79a5274a355af97f0d7796a1058eae375b5fb33152bb","source":{"kind":"arxiv","id":"2507.16777","version":1},"attestation_state":"computed","paper":{"title":"Silicate mineralogy and bulk composition of exoplanetary material in polluted white dwarfs","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Amy Bonsor, Andrew Buchan, Benjamin Richards, Ben Zuckerman, Carl Melis, \\'Erika Le Bourdais, Kate Y. L. Su, Laura K. Rogers, Marc Brouwers, Markus Kissler-Patig, Nicholas P. Ballering, Patrick Dufour, Siyi Xu","submitted_at":"2025-07-22T17:23:36Z","abstract_excerpt":"White dwarf planetary systems uniquely link the bulk elemental composition of exoplanetary material to the mineralogy as photospheric abundances can be compared to circumstellar dust mineralogy. This study re-examines Spitzer/IRS spectra of eight white dwarfs with both circumstellar dust and photospheric metals. All systems show 10$\\mu$m silicate emission features consistent with a mixture of olivine and pyroxene silicates, with varying dominance. New Hubble Space Telescope ultraviolet spectroscopic observations of two of these systems, GD56 and WD1150-153, reveal that both are accreting dry, "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2507.16777","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-07-22T17:23:36Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"ddccbd878a21579f5050876124133a51874548f29c7e3182509b8c8f60e0e7b1","abstract_canon_sha256":"4dce2fa8cd90e512cdff7600afe413baf118c805a52e4e0e4954a729c60df7ac"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:41:30.956661Z","signature_b64":"APJkGYpS/PTd1DkgEfb9+sWyQ1thcrDDArAeJT3WCBenRTt4NE+iIlxOtdVvOwwF96NRSZH0xS7Gv6stSf+QBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4c21fdb2bad0c68b72de79a5274a355af97f0d7796a1058eae375b5fb33152bb","last_reissued_at":"2026-07-05T11:41:30.956126Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:41:30.956126Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Silicate mineralogy and bulk composition of exoplanetary material in polluted white dwarfs","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Amy Bonsor, Andrew Buchan, Benjamin Richards, Ben Zuckerman, Carl Melis, \\'Erika Le Bourdais, Kate Y. L. Su, Laura K. Rogers, Marc Brouwers, Markus Kissler-Patig, Nicholas P. Ballering, Patrick Dufour, Siyi Xu","submitted_at":"2025-07-22T17:23:36Z","abstract_excerpt":"White dwarf planetary systems uniquely link the bulk elemental composition of exoplanetary material to the mineralogy as photospheric abundances can be compared to circumstellar dust mineralogy. This study re-examines Spitzer/IRS spectra of eight white dwarfs with both circumstellar dust and photospheric metals. All systems show 10$\\mu$m silicate emission features consistent with a mixture of olivine and pyroxene silicates, with varying dominance. New Hubble Space Telescope ultraviolet spectroscopic observations of two of these systems, GD56 and WD1150-153, reveal that both are accreting dry, "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.16777","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/2507.16777/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2507.16777","created_at":"2026-07-05T11:41:30.956192+00:00"},{"alias_kind":"arxiv_version","alias_value":"2507.16777v1","created_at":"2026-07-05T11:41:30.956192+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.16777","created_at":"2026-07-05T11:41:30.956192+00:00"},{"alias_kind":"pith_short_12","alias_value":"JQQ73MV22DDI","created_at":"2026-07-05T11:41:30.956192+00:00"},{"alias_kind":"pith_short_16","alias_value":"JQQ73MV22DDIW4W6","created_at":"2026-07-05T11:41:30.956192+00:00"},{"alias_kind":"pith_short_8","alias_value":"JQQ73MV2","created_at":"2026-07-05T11:41:30.956192+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/JQQ73MV22DDIW4W6PGSSOSRVLL","json":"https://pith.science/pith/JQQ73MV22DDIW4W6PGSSOSRVLL.json","graph_json":"https://pith.science/api/pith-number/JQQ73MV22DDIW4W6PGSSOSRVLL/graph.json","events_json":"https://pith.science/api/pith-number/JQQ73MV22DDIW4W6PGSSOSRVLL/events.json","paper":"https://pith.science/paper/JQQ73MV2"},"agent_actions":{"view_html":"https://pith.science/pith/JQQ73MV22DDIW4W6PGSSOSRVLL","download_json":"https://pith.science/pith/JQQ73MV22DDIW4W6PGSSOSRVLL.json","view_paper":"https://pith.science/paper/JQQ73MV2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2507.16777&json=true","fetch_graph":"https://pith.science/api/pith-number/JQQ73MV22DDIW4W6PGSSOSRVLL/graph.json","fetch_events":"https://pith.science/api/pith-number/JQQ73MV22DDIW4W6PGSSOSRVLL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/JQQ73MV22DDIW4W6PGSSOSRVLL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/JQQ73MV22DDIW4W6PGSSOSRVLL/action/storage_attestation","attest_author":"https://pith.science/pith/JQQ73MV22DDIW4W6PGSSOSRVLL/action/author_attestation","sign_citation":"https://pith.science/pith/JQQ73MV22DDIW4W6PGSSOSRVLL/action/citation_signature","submit_replication":"https://pith.science/pith/JQQ73MV22DDIW4W6PGSSOSRVLL/action/replication_record"}},"created_at":"2026-07-05T11:41:30.956192+00:00","updated_at":"2026-07-05T11:41:30.956192+00:00"}