{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:XDIGTT53T6V2BI65SFGZAZOIB6","short_pith_number":"pith:XDIGTT53","schema_version":"1.0","canonical_sha256":"b8d069cfbb9faba0a3dd914d9065c80f83a266990247d11e81d197529ee66839","source":{"kind":"arxiv","id":"2311.06037","version":2},"attestation_state":"computed","paper":{"title":"New Kids in Town. Sextans~II: a new stellar system in the outskirts of the Milky Way","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Crescenzo Tortora, Hendrik Hildebrandt, Jelte de Jong, Konrad Kuijken, Massimiliano Gatto, Massimo Dall'Ora, Michele Bellazzini, Michele Cignoni, Nicola R. Napolitano, Shiyang Zhang, Simon E. T. Smith, Vincenzo Ripepi","submitted_at":"2023-11-10T12:51:58Z","abstract_excerpt":"We report on the discovery of a significant and compact over-density of old and metal-poor stars in the KiDS survey (data release 4). The discovery is confirmed by deeper HSC-SSC data revealing the old Main Sequence Turn-Off of a stellar system located at a distance from the sun of $D_{\\sun}=145^{+14}_{-13}$~kpc in the direction of the Sextans constellation. The system has absolute integrated magnitude ($M_V=-3.9^{+0.4}_{-0.3}$), half-light radius ($r_h=193^{+61}_{-46}$~pc), and ellipticity ($e=0.46^{+0.11}_{-0.15}$) typical of Ultra Faint Dwarf galaxies (UFDs). The central surface brightness "},"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":"2311.06037","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-11-10T12:51:58Z","cross_cats_sorted":[],"title_canon_sha256":"f14896ec4fe985beda206ab7d2e879215e73791584dd9ce01ebbfd88f2372400","abstract_canon_sha256":"114e49cc52cea456e6a33b1b6e620c85715c55fdecf69ba18100f64fdd5e4b3e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:27:09.262290Z","signature_b64":"zuhU9XFToTaklzGK5uAgr2Q2DMo6UF1YJbqksC1z3rFtBxNJjex+1pHEFYx8xpSVa1aptdubjLsmWZqTUAGPDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b8d069cfbb9faba0a3dd914d9065c80f83a266990247d11e81d197529ee66839","last_reissued_at":"2026-07-05T07:27:09.261824Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:27:09.261824Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"New Kids in Town. Sextans~II: a new stellar system in the outskirts of the Milky Way","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Crescenzo Tortora, Hendrik Hildebrandt, Jelte de Jong, Konrad Kuijken, Massimiliano Gatto, Massimo Dall'Ora, Michele Bellazzini, Michele Cignoni, Nicola R. Napolitano, Shiyang Zhang, Simon E. T. Smith, Vincenzo Ripepi","submitted_at":"2023-11-10T12:51:58Z","abstract_excerpt":"We report on the discovery of a significant and compact over-density of old and metal-poor stars in the KiDS survey (data release 4). The discovery is confirmed by deeper HSC-SSC data revealing the old Main Sequence Turn-Off of a stellar system located at a distance from the sun of $D_{\\sun}=145^{+14}_{-13}$~kpc in the direction of the Sextans constellation. The system has absolute integrated magnitude ($M_V=-3.9^{+0.4}_{-0.3}$), half-light radius ($r_h=193^{+61}_{-46}$~pc), and ellipticity ($e=0.46^{+0.11}_{-0.15}$) typical of Ultra Faint Dwarf galaxies (UFDs). The central surface brightness "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2311.06037","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/2311.06037/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":"2311.06037","created_at":"2026-07-05T07:27:09.261902+00:00"},{"alias_kind":"arxiv_version","alias_value":"2311.06037v2","created_at":"2026-07-05T07:27:09.261902+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2311.06037","created_at":"2026-07-05T07:27:09.261902+00:00"},{"alias_kind":"pith_short_12","alias_value":"XDIGTT53T6V2","created_at":"2026-07-05T07:27:09.261902+00:00"},{"alias_kind":"pith_short_16","alias_value":"XDIGTT53T6V2BI65","created_at":"2026-07-05T07:27:09.261902+00:00"},{"alias_kind":"pith_short_8","alias_value":"XDIGTT53","created_at":"2026-07-05T07:27:09.261902+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/XDIGTT53T6V2BI65SFGZAZOIB6","json":"https://pith.science/pith/XDIGTT53T6V2BI65SFGZAZOIB6.json","graph_json":"https://pith.science/api/pith-number/XDIGTT53T6V2BI65SFGZAZOIB6/graph.json","events_json":"https://pith.science/api/pith-number/XDIGTT53T6V2BI65SFGZAZOIB6/events.json","paper":"https://pith.science/paper/XDIGTT53"},"agent_actions":{"view_html":"https://pith.science/pith/XDIGTT53T6V2BI65SFGZAZOIB6","download_json":"https://pith.science/pith/XDIGTT53T6V2BI65SFGZAZOIB6.json","view_paper":"https://pith.science/paper/XDIGTT53","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2311.06037&json=true","fetch_graph":"https://pith.science/api/pith-number/XDIGTT53T6V2BI65SFGZAZOIB6/graph.json","fetch_events":"https://pith.science/api/pith-number/XDIGTT53T6V2BI65SFGZAZOIB6/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/XDIGTT53T6V2BI65SFGZAZOIB6/action/timestamp_anchor","attest_storage":"https://pith.science/pith/XDIGTT53T6V2BI65SFGZAZOIB6/action/storage_attestation","attest_author":"https://pith.science/pith/XDIGTT53T6V2BI65SFGZAZOIB6/action/author_attestation","sign_citation":"https://pith.science/pith/XDIGTT53T6V2BI65SFGZAZOIB6/action/citation_signature","submit_replication":"https://pith.science/pith/XDIGTT53T6V2BI65SFGZAZOIB6/action/replication_record"}},"created_at":"2026-07-05T07:27:09.261902+00:00","updated_at":"2026-07-05T07:27:09.261902+00:00"}