{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:MGS4FXN7OXAI2UQ6DAE7YRY6EW","short_pith_number":"pith:MGS4FXN7","schema_version":"1.0","canonical_sha256":"61a5c2ddbf75c08d521e1809fc471e259987bb13549f52b9d3868981214e973f","source":{"kind":"arxiv","id":"2409.16345","version":2},"attestation_state":"computed","paper":{"title":"Three Quenched, Faint Dwarf Galaxies in the Direction of NGC 300: New Probes of Reionization and Internal Feedback","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A.B. Pace, A. Doliva-Dolinsky, A. Drlica-Wagner, A. Karunakaran, A. Smercina, B. Mutlu-Pakdil, C.E. Martinez-Vazquez, C. Fielder, D. Crnojevic, D.J. Sand, D. Martinez-Delgado, G. Donatiello, J.E. Andrews, J.L. Carlin, K.B.W McQuinn, K. Spekkens, L.C. Hunter, M.G. Jones, P. Bennet, T.N. Hai, W. Cerny","submitted_at":"2024-09-24T18:00:00Z","abstract_excerpt":"We report the discovery of three faint and ultra-faint dwarf galaxies -- Sculptor A, Sculptor B and Sculptor C -- in the direction of NGC 300 (D=2.0 Mpc), a Large Magellanic Cloud-mass galaxy. Deep ground-based imaging with Gemini/GMOS resolves all three dwarf galaxies into stars, each displaying a red giant branch indicative of an old, metal-poor stellar population. No young stars or HI gas are apparent, and the lack of a GALEX UV detection suggests that all three systems are quenched. Sculptor C (D=2.04$^{+0.10}_{-0.13}$ Mpc; $M_V$=$-$9.1$\\pm$0.1 mag or $L_V$=(3.7$^{+0.4}_{-0.3}$)$\\times$10$"},"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":"2409.16345","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-09-24T18:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"727606128726099f676f75e6d8a87999f3bf7a2c26dbf30d824d7fd6c0e1ff0e","abstract_canon_sha256":"5697ba983753c175915685c362b334c5a0f5f92cd1625fcab229b13e470e91c7"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:46:30.461889Z","signature_b64":"9ciuGVlxjkiWvV6NgXeTGqwyfTK2FLgbJxfQMh32f4mFgX6YG0/JX1GJ7tyBUmJiXkaX1LggrPZ68CxZlQ/vDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"61a5c2ddbf75c08d521e1809fc471e259987bb13549f52b9d3868981214e973f","last_reissued_at":"2026-07-05T09:46:30.461382Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:46:30.461382Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Three Quenched, Faint Dwarf Galaxies in the Direction of NGC 300: New Probes of Reionization and Internal Feedback","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A.B. Pace, A. Doliva-Dolinsky, A. Drlica-Wagner, A. Karunakaran, A. Smercina, B. Mutlu-Pakdil, C.E. Martinez-Vazquez, C. Fielder, D. Crnojevic, D.J. Sand, D. Martinez-Delgado, G. Donatiello, J.E. Andrews, J.L. Carlin, K.B.W McQuinn, K. Spekkens, L.C. Hunter, M.G. Jones, P. Bennet, T.N. Hai, W. Cerny","submitted_at":"2024-09-24T18:00:00Z","abstract_excerpt":"We report the discovery of three faint and ultra-faint dwarf galaxies -- Sculptor A, Sculptor B and Sculptor C -- in the direction of NGC 300 (D=2.0 Mpc), a Large Magellanic Cloud-mass galaxy. Deep ground-based imaging with Gemini/GMOS resolves all three dwarf galaxies into stars, each displaying a red giant branch indicative of an old, metal-poor stellar population. No young stars or HI gas are apparent, and the lack of a GALEX UV detection suggests that all three systems are quenched. Sculptor C (D=2.04$^{+0.10}_{-0.13}$ Mpc; $M_V$=$-$9.1$\\pm$0.1 mag or $L_V$=(3.7$^{+0.4}_{-0.3}$)$\\times$10$"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.16345","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/2409.16345/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":"2409.16345","created_at":"2026-07-05T09:46:30.461446+00:00"},{"alias_kind":"arxiv_version","alias_value":"2409.16345v2","created_at":"2026-07-05T09:46:30.461446+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.16345","created_at":"2026-07-05T09:46:30.461446+00:00"},{"alias_kind":"pith_short_12","alias_value":"MGS4FXN7OXAI","created_at":"2026-07-05T09:46:30.461446+00:00"},{"alias_kind":"pith_short_16","alias_value":"MGS4FXN7OXAI2UQ6","created_at":"2026-07-05T09:46:30.461446+00:00"},{"alias_kind":"pith_short_8","alias_value":"MGS4FXN7","created_at":"2026-07-05T09:46:30.461446+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/MGS4FXN7OXAI2UQ6DAE7YRY6EW","json":"https://pith.science/pith/MGS4FXN7OXAI2UQ6DAE7YRY6EW.json","graph_json":"https://pith.science/api/pith-number/MGS4FXN7OXAI2UQ6DAE7YRY6EW/graph.json","events_json":"https://pith.science/api/pith-number/MGS4FXN7OXAI2UQ6DAE7YRY6EW/events.json","paper":"https://pith.science/paper/MGS4FXN7"},"agent_actions":{"view_html":"https://pith.science/pith/MGS4FXN7OXAI2UQ6DAE7YRY6EW","download_json":"https://pith.science/pith/MGS4FXN7OXAI2UQ6DAE7YRY6EW.json","view_paper":"https://pith.science/paper/MGS4FXN7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2409.16345&json=true","fetch_graph":"https://pith.science/api/pith-number/MGS4FXN7OXAI2UQ6DAE7YRY6EW/graph.json","fetch_events":"https://pith.science/api/pith-number/MGS4FXN7OXAI2UQ6DAE7YRY6EW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/MGS4FXN7OXAI2UQ6DAE7YRY6EW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/MGS4FXN7OXAI2UQ6DAE7YRY6EW/action/storage_attestation","attest_author":"https://pith.science/pith/MGS4FXN7OXAI2UQ6DAE7YRY6EW/action/author_attestation","sign_citation":"https://pith.science/pith/MGS4FXN7OXAI2UQ6DAE7YRY6EW/action/citation_signature","submit_replication":"https://pith.science/pith/MGS4FXN7OXAI2UQ6DAE7YRY6EW/action/replication_record"}},"created_at":"2026-07-05T09:46:30.461446+00:00","updated_at":"2026-07-05T09:46:30.461446+00:00"}