{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:QY77KV6QRMDCRPFTRRCMOEF243","short_pith_number":"pith:QY77KV6Q","schema_version":"1.0","canonical_sha256":"863ff557d08b0628bcb38c44c710bae6e03bc6f09c8baf5f63ca04767cfdff84","source":{"kind":"arxiv","id":"1908.07427","version":2},"attestation_state":"computed","paper":{"title":"New Spatially Resolved Imaging of the SR 21 Transition Disk and Constraints on the Small-Grain Disk Geometry","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.IM"],"primary_cat":"astro-ph.SR","authors_text":"Alfio Puglisi, Andy Skemer, Jared Males, Josh Eisner, Katie Morzinski, Laird Close, Mike Ireland, Nienke van der Marel, Patrick Sheehan, Runa Briguglio, Steph Sallum, Vanessa Bailey","submitted_at":"2019-08-20T15:22:21Z","abstract_excerpt":"We present new 0.6 - 4 $\\mu$m imaging of the SR 21 transition disk from Keck/NIRC2 and Magellan/MagAO. The protoplanetary disk around SR 21 has a large (~ 30 - 40 AU) clearing first inferred from its spectral energy distribution and later detected in sub-millimeter imaging. Both the gas and small dust grains are known to have a different morphology, with an inner truncation in CO at ~7 AU, and micron-sized dust detected within the millimeter clearing. Previous near-infrared imaging could not distinguish between an inner dust disk with a truncation at ~7 AU or one that extended to the sublimati"},"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":"1908.07427","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-08-20T15:22:21Z","cross_cats_sorted":["astro-ph.EP","astro-ph.IM"],"title_canon_sha256":"99a16a521ca96180ea2110078cbc025bd228af8d23ed447e93e4a68bd965aec3","abstract_canon_sha256":"d5e54d7a5824010c28e0eac0e63ed3d7846b87ecdbdd84d6fc507f72d208d8e2"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:09:03.227220Z","signature_b64":"eFXfjEv+sj56I3sxSX0qklyk6uGAq/zQUvDtH7BSNnyw4XtUlAvBJ0ow9B3J7DwlBD0oNN1YPq4qLVMn4BxiDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"863ff557d08b0628bcb38c44c710bae6e03bc6f09c8baf5f63ca04767cfdff84","last_reissued_at":"2026-07-05T00:09:03.226671Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:09:03.226671Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"New Spatially Resolved Imaging of the SR 21 Transition Disk and Constraints on the Small-Grain Disk Geometry","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.IM"],"primary_cat":"astro-ph.SR","authors_text":"Alfio Puglisi, Andy Skemer, Jared Males, Josh Eisner, Katie Morzinski, Laird Close, Mike Ireland, Nienke van der Marel, Patrick Sheehan, Runa Briguglio, Steph Sallum, Vanessa Bailey","submitted_at":"2019-08-20T15:22:21Z","abstract_excerpt":"We present new 0.6 - 4 $\\mu$m imaging of the SR 21 transition disk from Keck/NIRC2 and Magellan/MagAO. The protoplanetary disk around SR 21 has a large (~ 30 - 40 AU) clearing first inferred from its spectral energy distribution and later detected in sub-millimeter imaging. Both the gas and small dust grains are known to have a different morphology, with an inner truncation in CO at ~7 AU, and micron-sized dust detected within the millimeter clearing. Previous near-infrared imaging could not distinguish between an inner dust disk with a truncation at ~7 AU or one that extended to the sublimati"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.07427","kind":"arxiv","version":2},"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/1908.07427/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":"1908.07427","created_at":"2026-07-05T00:09:03.226729+00:00"},{"alias_kind":"arxiv_version","alias_value":"1908.07427v2","created_at":"2026-07-05T00:09:03.226729+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.07427","created_at":"2026-07-05T00:09:03.226729+00:00"},{"alias_kind":"pith_short_12","alias_value":"QY77KV6QRMDC","created_at":"2026-07-05T00:09:03.226729+00:00"},{"alias_kind":"pith_short_16","alias_value":"QY77KV6QRMDCRPFT","created_at":"2026-07-05T00:09:03.226729+00:00"},{"alias_kind":"pith_short_8","alias_value":"QY77KV6Q","created_at":"2026-07-05T00:09:03.226729+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/QY77KV6QRMDCRPFTRRCMOEF243","json":"https://pith.science/pith/QY77KV6QRMDCRPFTRRCMOEF243.json","graph_json":"https://pith.science/api/pith-number/QY77KV6QRMDCRPFTRRCMOEF243/graph.json","events_json":"https://pith.science/api/pith-number/QY77KV6QRMDCRPFTRRCMOEF243/events.json","paper":"https://pith.science/paper/QY77KV6Q"},"agent_actions":{"view_html":"https://pith.science/pith/QY77KV6QRMDCRPFTRRCMOEF243","download_json":"https://pith.science/pith/QY77KV6QRMDCRPFTRRCMOEF243.json","view_paper":"https://pith.science/paper/QY77KV6Q","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1908.07427&json=true","fetch_graph":"https://pith.science/api/pith-number/QY77KV6QRMDCRPFTRRCMOEF243/graph.json","fetch_events":"https://pith.science/api/pith-number/QY77KV6QRMDCRPFTRRCMOEF243/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QY77KV6QRMDCRPFTRRCMOEF243/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QY77KV6QRMDCRPFTRRCMOEF243/action/storage_attestation","attest_author":"https://pith.science/pith/QY77KV6QRMDCRPFTRRCMOEF243/action/author_attestation","sign_citation":"https://pith.science/pith/QY77KV6QRMDCRPFTRRCMOEF243/action/citation_signature","submit_replication":"https://pith.science/pith/QY77KV6QRMDCRPFTRRCMOEF243/action/replication_record"}},"created_at":"2026-07-05T00:09:03.226729+00:00","updated_at":"2026-07-05T00:09:03.226729+00:00"}