{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:TW4DYYD74M7J27Z55VP5NJ3JQZ","short_pith_number":"pith:TW4DYYD7","schema_version":"1.0","canonical_sha256":"9db83c607fe33e9d7f3ded5fd6a7698660cc387c6c75b2f46872f797a5bd03e8","source":{"kind":"arxiv","id":"0901.3744","version":1},"attestation_state":"computed","paper":{"title":"High Angular Resolution Radio Observations of the HL/XZ Tau Region: Mapping the 50 AU Protoplanetary Disk around HL Tau and Resolving XZ Tau S into a 13 AU Binary","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Carlos Carrasco-Gonzalez, Guillem Anglada, Luis F. Rodriguez, Salvador Curiel","submitted_at":"2009-01-23T18:30:10Z","abstract_excerpt":"We present new 7 mm and archive 1.3 cm high angular resolution observations of the HL/XZ Tau region made with the VLA. At 7 mm, the emission from HL Tau seems to be arising in a clumpy disk with radius of order 25 AU. The 1.3 cm emission from XZ Tau shows the emission from a binary system with 0\"3 (42 AU) separation, known from previous optical/IR observations. However, at 7 mm, the southern radio component resolves into a binary with 0\"09 (13 AU) separation, suggesting that XZ Tau is actually a triple star system. We suggest that the remarkable ejection of gas from the XZ Tau system observed "},"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":"0901.3744","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-01-23T18:30:10Z","cross_cats_sorted":[],"title_canon_sha256":"7017139a99ae45d3f89b8d6b8bb4638eeaadfbcb5b7462aa8738df4a3da782dc","abstract_canon_sha256":"f66e16c6c66823316788b919fd5384d5b325299c8d0f781636ab863282042dd5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:17.202728Z","signature_b64":"hK72JgoloH4g516W3dO50zIBXmjnJEkYFftDL0MWrJ+gORoIpQyD+QRU1S/DSVGVe7mSsCrk8ftRXeY742yvAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9db83c607fe33e9d7f3ded5fd6a7698660cc387c6c75b2f46872f797a5bd03e8","last_reissued_at":"2026-05-18T04:29:17.202218Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:17.202218Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"High Angular Resolution Radio Observations of the HL/XZ Tau Region: Mapping the 50 AU Protoplanetary Disk around HL Tau and Resolving XZ Tau S into a 13 AU Binary","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Carlos Carrasco-Gonzalez, Guillem Anglada, Luis F. Rodriguez, Salvador Curiel","submitted_at":"2009-01-23T18:30:10Z","abstract_excerpt":"We present new 7 mm and archive 1.3 cm high angular resolution observations of the HL/XZ Tau region made with the VLA. At 7 mm, the emission from HL Tau seems to be arising in a clumpy disk with radius of order 25 AU. The 1.3 cm emission from XZ Tau shows the emission from a binary system with 0\"3 (42 AU) separation, known from previous optical/IR observations. However, at 7 mm, the southern radio component resolves into a binary with 0\"09 (13 AU) separation, suggesting that XZ Tau is actually a triple star system. We suggest that the remarkable ejection of gas from the XZ Tau system observed "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0901.3744","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":"0901.3744","created_at":"2026-05-18T04:29:17.202304+00:00"},{"alias_kind":"arxiv_version","alias_value":"0901.3744v1","created_at":"2026-05-18T04:29:17.202304+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0901.3744","created_at":"2026-05-18T04:29:17.202304+00:00"},{"alias_kind":"pith_short_12","alias_value":"TW4DYYD74M7J","created_at":"2026-05-18T12:26:02.257875+00:00"},{"alias_kind":"pith_short_16","alias_value":"TW4DYYD74M7J27Z5","created_at":"2026-05-18T12:26:02.257875+00:00"},{"alias_kind":"pith_short_8","alias_value":"TW4DYYD7","created_at":"2026-05-18T12:26:02.257875+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/TW4DYYD74M7J27Z55VP5NJ3JQZ","json":"https://pith.science/pith/TW4DYYD74M7J27Z55VP5NJ3JQZ.json","graph_json":"https://pith.science/api/pith-number/TW4DYYD74M7J27Z55VP5NJ3JQZ/graph.json","events_json":"https://pith.science/api/pith-number/TW4DYYD74M7J27Z55VP5NJ3JQZ/events.json","paper":"https://pith.science/paper/TW4DYYD7"},"agent_actions":{"view_html":"https://pith.science/pith/TW4DYYD74M7J27Z55VP5NJ3JQZ","download_json":"https://pith.science/pith/TW4DYYD74M7J27Z55VP5NJ3JQZ.json","view_paper":"https://pith.science/paper/TW4DYYD7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0901.3744&json=true","fetch_graph":"https://pith.science/api/pith-number/TW4DYYD74M7J27Z55VP5NJ3JQZ/graph.json","fetch_events":"https://pith.science/api/pith-number/TW4DYYD74M7J27Z55VP5NJ3JQZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/TW4DYYD74M7J27Z55VP5NJ3JQZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/TW4DYYD74M7J27Z55VP5NJ3JQZ/action/storage_attestation","attest_author":"https://pith.science/pith/TW4DYYD74M7J27Z55VP5NJ3JQZ/action/author_attestation","sign_citation":"https://pith.science/pith/TW4DYYD74M7J27Z55VP5NJ3JQZ/action/citation_signature","submit_replication":"https://pith.science/pith/TW4DYYD74M7J27Z55VP5NJ3JQZ/action/replication_record"}},"created_at":"2026-05-18T04:29:17.202304+00:00","updated_at":"2026-05-18T04:29:17.202304+00:00"}