{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:EFE6QWXVFBARKZSFIU5WIPQFPC","short_pith_number":"pith:EFE6QWXV","schema_version":"1.0","canonical_sha256":"2149e85af52841156645453b643e0578a382735221bd7535637ea9800971de6c","source":{"kind":"arxiv","id":"1111.1716","version":2},"attestation_state":"computed","paper":{"title":"New insights into the star formation histories of candidate intermediate-age early-type galaxies from K'-band imaging of globular clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.SR"],"primary_cat":"astro-ph.CO","authors_text":"(2) STScI, (3) Pontificia Universidad Catolica de Chile, Baltimore, Chile), Germany, Iskren Y. Georgiev (1), Paul Goudfrooij (2), Santiago, Thomas H. Puzia (3) ((1) AIfA Bonn, USA","submitted_at":"2011-11-07T21:00:00Z","abstract_excerpt":"We investigate age and metallicity distributions of bright globular clusters (GCs) in the candidate intermediate-age early-type galaxies NGC 3610, NGC 584 and NGC 3377 using a combination of new Gemini/NIRI K'-band imaging and existing optical V,I photometry from HST data. The V-I vs I-K' colour-colour diagram is found to break the age-metallicity degeneracy present in optical colours, as I-K' primarily measures a populations' metallicity and is relatively insensitive, unlike optical spectroscopy, to the effect of hot horizontal branch (HB) stars, known to be present in massive old GCs. We der"},"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":"1111.1716","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-11-07T21:00:00Z","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"title_canon_sha256":"380bb8ba07e0747314d8e7de505fe889bed2d32d7b90dff89fb45d2c1aedbee5","abstract_canon_sha256":"f7bf106f8b3def0a26623b4b200df9876c82b9572c3082a94ce3e09d4ec751c4"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:59:44.249793Z","signature_b64":"WfMhz6utyu5iMcjIvm6RYa0XBzOjYDuHmbZVI2OqhhFFplDzG6baPBDX2HD34qk4ASN/JFmnt7WfhlfV4HeUCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2149e85af52841156645453b643e0578a382735221bd7535637ea9800971de6c","last_reissued_at":"2026-05-18T01:59:44.248958Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:59:44.248958Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"New insights into the star formation histories of candidate intermediate-age early-type galaxies from K'-band imaging of globular clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.SR"],"primary_cat":"astro-ph.CO","authors_text":"(2) STScI, (3) Pontificia Universidad Catolica de Chile, Baltimore, Chile), Germany, Iskren Y. Georgiev (1), Paul Goudfrooij (2), Santiago, Thomas H. Puzia (3) ((1) AIfA Bonn, USA","submitted_at":"2011-11-07T21:00:00Z","abstract_excerpt":"We investigate age and metallicity distributions of bright globular clusters (GCs) in the candidate intermediate-age early-type galaxies NGC 3610, NGC 584 and NGC 3377 using a combination of new Gemini/NIRI K'-band imaging and existing optical V,I photometry from HST data. The V-I vs I-K' colour-colour diagram is found to break the age-metallicity degeneracy present in optical colours, as I-K' primarily measures a populations' metallicity and is relatively insensitive, unlike optical spectroscopy, to the effect of hot horizontal branch (HB) stars, known to be present in massive old GCs. We der"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.1716","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":""},"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":"1111.1716","created_at":"2026-05-18T01:59:44.249087+00:00"},{"alias_kind":"arxiv_version","alias_value":"1111.1716v2","created_at":"2026-05-18T01:59:44.249087+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.1716","created_at":"2026-05-18T01:59:44.249087+00:00"},{"alias_kind":"pith_short_12","alias_value":"EFE6QWXVFBAR","created_at":"2026-05-18T12:26:28.662955+00:00"},{"alias_kind":"pith_short_16","alias_value":"EFE6QWXVFBARKZSF","created_at":"2026-05-18T12:26:28.662955+00:00"},{"alias_kind":"pith_short_8","alias_value":"EFE6QWXV","created_at":"2026-05-18T12:26:28.662955+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/EFE6QWXVFBARKZSFIU5WIPQFPC","json":"https://pith.science/pith/EFE6QWXVFBARKZSFIU5WIPQFPC.json","graph_json":"https://pith.science/api/pith-number/EFE6QWXVFBARKZSFIU5WIPQFPC/graph.json","events_json":"https://pith.science/api/pith-number/EFE6QWXVFBARKZSFIU5WIPQFPC/events.json","paper":"https://pith.science/paper/EFE6QWXV"},"agent_actions":{"view_html":"https://pith.science/pith/EFE6QWXVFBARKZSFIU5WIPQFPC","download_json":"https://pith.science/pith/EFE6QWXVFBARKZSFIU5WIPQFPC.json","view_paper":"https://pith.science/paper/EFE6QWXV","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1111.1716&json=true","fetch_graph":"https://pith.science/api/pith-number/EFE6QWXVFBARKZSFIU5WIPQFPC/graph.json","fetch_events":"https://pith.science/api/pith-number/EFE6QWXVFBARKZSFIU5WIPQFPC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/EFE6QWXVFBARKZSFIU5WIPQFPC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/EFE6QWXVFBARKZSFIU5WIPQFPC/action/storage_attestation","attest_author":"https://pith.science/pith/EFE6QWXVFBARKZSFIU5WIPQFPC/action/author_attestation","sign_citation":"https://pith.science/pith/EFE6QWXVFBARKZSFIU5WIPQFPC/action/citation_signature","submit_replication":"https://pith.science/pith/EFE6QWXVFBARKZSFIU5WIPQFPC/action/replication_record"}},"created_at":"2026-05-18T01:59:44.249087+00:00","updated_at":"2026-05-18T01:59:44.249087+00:00"}