{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:LXRNPT2IMHSWWYXHXTIGW2WW4X","short_pith_number":"pith:LXRNPT2I","schema_version":"1.0","canonical_sha256":"5de2d7cf4861e56b62e7bcd06b6ad6e5c56c1f930ecff8d583bdd56dc859dac4","source":{"kind":"arxiv","id":"1511.07590","version":1},"attestation_state":"computed","paper":{"title":"DR Tau: Temporal variability of the brightness distribution in the potential planet-forming region","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Florian Ober, Robert Brunngr\\\"aber, Sebastian Wolf, Thorsten Ratzka","submitted_at":"2015-11-24T06:48:32Z","abstract_excerpt":"We investigate the variability of the brightness distribution and the changing density structure of the protoplanetary disk around DR Tau, a classical T Tauri star. DR Tau is known for its peculiar variations from the ultraviolet (UV) to the mid-infrared (MIR). Our goal is to constrain the temporal variation of the disk structure based on photometric and MIR interferometric data. We observed DR Tau with the MID-infrared Interferometric instrument (MIDI) at the Very Large Telescope Interferometer (VLTI) at three epochs separated by about nine years, two months, respectively. We fit the spectral"},"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":"1511.07590","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-11-24T06:48:32Z","cross_cats_sorted":[],"title_canon_sha256":"74e73c6549ccad01856100fd5eb8863e31d1b1b3554797658e5de17ca381a529","abstract_canon_sha256":"5bced2e46ba065a5ad2f82c85abd03669136353dd34d0aebf8e58a689d70f330"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:23:53.990305Z","signature_b64":"Nt8VBnnOmEPx4y5br/xyFvE9aRrFgMJ3aenw8OtrvWjJdMt3Um1QPjgrZ91r2EgSTeo1pTNkWQ9/xvCt2IcqBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5de2d7cf4861e56b62e7bcd06b6ad6e5c56c1f930ecff8d583bdd56dc859dac4","last_reissued_at":"2026-05-18T01:23:53.989711Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:23:53.989711Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"DR Tau: Temporal variability of the brightness distribution in the potential planet-forming region","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Florian Ober, Robert Brunngr\\\"aber, Sebastian Wolf, Thorsten Ratzka","submitted_at":"2015-11-24T06:48:32Z","abstract_excerpt":"We investigate the variability of the brightness distribution and the changing density structure of the protoplanetary disk around DR Tau, a classical T Tauri star. DR Tau is known for its peculiar variations from the ultraviolet (UV) to the mid-infrared (MIR). Our goal is to constrain the temporal variation of the disk structure based on photometric and MIR interferometric data. We observed DR Tau with the MID-infrared Interferometric instrument (MIDI) at the Very Large Telescope Interferometer (VLTI) at three epochs separated by about nine years, two months, respectively. We fit the spectral"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.07590","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":""},"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":"1511.07590","created_at":"2026-05-18T01:23:53.989795+00:00"},{"alias_kind":"arxiv_version","alias_value":"1511.07590v1","created_at":"2026-05-18T01:23:53.989795+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.07590","created_at":"2026-05-18T01:23:53.989795+00:00"},{"alias_kind":"pith_short_12","alias_value":"LXRNPT2IMHSW","created_at":"2026-05-18T12:29:29.992203+00:00"},{"alias_kind":"pith_short_16","alias_value":"LXRNPT2IMHSWWYXH","created_at":"2026-05-18T12:29:29.992203+00:00"},{"alias_kind":"pith_short_8","alias_value":"LXRNPT2I","created_at":"2026-05-18T12:29:29.992203+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/LXRNPT2IMHSWWYXHXTIGW2WW4X","json":"https://pith.science/pith/LXRNPT2IMHSWWYXHXTIGW2WW4X.json","graph_json":"https://pith.science/api/pith-number/LXRNPT2IMHSWWYXHXTIGW2WW4X/graph.json","events_json":"https://pith.science/api/pith-number/LXRNPT2IMHSWWYXHXTIGW2WW4X/events.json","paper":"https://pith.science/paper/LXRNPT2I"},"agent_actions":{"view_html":"https://pith.science/pith/LXRNPT2IMHSWWYXHXTIGW2WW4X","download_json":"https://pith.science/pith/LXRNPT2IMHSWWYXHXTIGW2WW4X.json","view_paper":"https://pith.science/paper/LXRNPT2I","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1511.07590&json=true","fetch_graph":"https://pith.science/api/pith-number/LXRNPT2IMHSWWYXHXTIGW2WW4X/graph.json","fetch_events":"https://pith.science/api/pith-number/LXRNPT2IMHSWWYXHXTIGW2WW4X/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LXRNPT2IMHSWWYXHXTIGW2WW4X/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LXRNPT2IMHSWWYXHXTIGW2WW4X/action/storage_attestation","attest_author":"https://pith.science/pith/LXRNPT2IMHSWWYXHXTIGW2WW4X/action/author_attestation","sign_citation":"https://pith.science/pith/LXRNPT2IMHSWWYXHXTIGW2WW4X/action/citation_signature","submit_replication":"https://pith.science/pith/LXRNPT2IMHSWWYXHXTIGW2WW4X/action/replication_record"}},"created_at":"2026-05-18T01:23:53.989795+00:00","updated_at":"2026-05-18T01:23:53.989795+00:00"}