{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:KRQSPYP7QJG2ZNUHUFRAO2SDK7","short_pith_number":"pith:KRQSPYP7","schema_version":"1.0","canonical_sha256":"546127e1ff824dacb687a162076a4357f5d2876cc50028533ef92c704fcfd730","source":{"kind":"arxiv","id":"1610.03856","version":1},"attestation_state":"computed","paper":{"title":"Spectroscopic confirmation of the dwarf spheroidal galaxy d0944+71 as a member of the M81 group of galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"David Sand, Denija Crnojevic, Elisa Toloba, Joshua Simon, Kristin Chiboucas, Puragra Guhathakurta","submitted_at":"2016-10-12T20:00:14Z","abstract_excerpt":"We use Keck/DEIMOS spectroscopy to measure the first velocity and metallicity of a dwarf spheroidal (dSph) galaxy beyond the Local Group using resolved stars. Our target, d0944+71, is a faint dSph found in the halo of the massive spiral galaxy M81 by Chiboucas et al. We coadd the spectra of 27 individual stars and measure a heliocentric radial velocity of $-38\\pm10$~km/s. This velocity is consistent with d0944+71 being gravitationally bound to M81. We coadd the spectra of the 23 stars that are consistent with being red giant branch stars and measure an overall metallicity of ${\\rm [Fe/H]}=-1.3"},"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":"1610.03856","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-12T20:00:14Z","cross_cats_sorted":[],"title_canon_sha256":"620845c0fe8ddd605102b4763ef4f4606a3fd04601f00124f2127a5a00a60b38","abstract_canon_sha256":"a7794bad6e410b0308ff250081a407a92da70529e3d58dac0f363d2c7c728e50"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:01:59.732704Z","signature_b64":"TK1XLu0qDEf8JhYCAS1Vi2+XvYJyAJIQrU9gXsJnUzAr9s34CRAY/3waus05y4RKCQZi1VKAwRZeTzNHne50BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"546127e1ff824dacb687a162076a4357f5d2876cc50028533ef92c704fcfd730","last_reissued_at":"2026-05-18T01:01:59.732278Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:01:59.732278Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spectroscopic confirmation of the dwarf spheroidal galaxy d0944+71 as a member of the M81 group of galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"David Sand, Denija Crnojevic, Elisa Toloba, Joshua Simon, Kristin Chiboucas, Puragra Guhathakurta","submitted_at":"2016-10-12T20:00:14Z","abstract_excerpt":"We use Keck/DEIMOS spectroscopy to measure the first velocity and metallicity of a dwarf spheroidal (dSph) galaxy beyond the Local Group using resolved stars. Our target, d0944+71, is a faint dSph found in the halo of the massive spiral galaxy M81 by Chiboucas et al. We coadd the spectra of 27 individual stars and measure a heliocentric radial velocity of $-38\\pm10$~km/s. This velocity is consistent with d0944+71 being gravitationally bound to M81. We coadd the spectra of the 23 stars that are consistent with being red giant branch stars and measure an overall metallicity of ${\\rm [Fe/H]}=-1.3"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.03856","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":"1610.03856","created_at":"2026-05-18T01:01:59.732343+00:00"},{"alias_kind":"arxiv_version","alias_value":"1610.03856v1","created_at":"2026-05-18T01:01:59.732343+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.03856","created_at":"2026-05-18T01:01:59.732343+00:00"},{"alias_kind":"pith_short_12","alias_value":"KRQSPYP7QJG2","created_at":"2026-05-18T12:30:29.479603+00:00"},{"alias_kind":"pith_short_16","alias_value":"KRQSPYP7QJG2ZNUH","created_at":"2026-05-18T12:30:29.479603+00:00"},{"alias_kind":"pith_short_8","alias_value":"KRQSPYP7","created_at":"2026-05-18T12:30:29.479603+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/KRQSPYP7QJG2ZNUHUFRAO2SDK7","json":"https://pith.science/pith/KRQSPYP7QJG2ZNUHUFRAO2SDK7.json","graph_json":"https://pith.science/api/pith-number/KRQSPYP7QJG2ZNUHUFRAO2SDK7/graph.json","events_json":"https://pith.science/api/pith-number/KRQSPYP7QJG2ZNUHUFRAO2SDK7/events.json","paper":"https://pith.science/paper/KRQSPYP7"},"agent_actions":{"view_html":"https://pith.science/pith/KRQSPYP7QJG2ZNUHUFRAO2SDK7","download_json":"https://pith.science/pith/KRQSPYP7QJG2ZNUHUFRAO2SDK7.json","view_paper":"https://pith.science/paper/KRQSPYP7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1610.03856&json=true","fetch_graph":"https://pith.science/api/pith-number/KRQSPYP7QJG2ZNUHUFRAO2SDK7/graph.json","fetch_events":"https://pith.science/api/pith-number/KRQSPYP7QJG2ZNUHUFRAO2SDK7/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/KRQSPYP7QJG2ZNUHUFRAO2SDK7/action/timestamp_anchor","attest_storage":"https://pith.science/pith/KRQSPYP7QJG2ZNUHUFRAO2SDK7/action/storage_attestation","attest_author":"https://pith.science/pith/KRQSPYP7QJG2ZNUHUFRAO2SDK7/action/author_attestation","sign_citation":"https://pith.science/pith/KRQSPYP7QJG2ZNUHUFRAO2SDK7/action/citation_signature","submit_replication":"https://pith.science/pith/KRQSPYP7QJG2ZNUHUFRAO2SDK7/action/replication_record"}},"created_at":"2026-05-18T01:01:59.732343+00:00","updated_at":"2026-05-18T01:01:59.732343+00:00"}