{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:T2DHKIM3VQQZMGSWNOEGMAJB6S","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"2fa74e0556f6f3b3df55fe61dc5f3f25289507c9b5a4c24009d9143a0f372b0f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-05-06T20:00:33Z","title_canon_sha256":"fedfc2aaef8743239d7034165344f903138dbadd710d0e5e5bec16639a9322ef"},"schema_version":"1.0","source":{"id":"1505.01485","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.01485","created_at":"2026-05-18T02:03:54Z"},{"alias_kind":"arxiv_version","alias_value":"1505.01485v2","created_at":"2026-05-18T02:03:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.01485","created_at":"2026-05-18T02:03:54Z"},{"alias_kind":"pith_short_12","alias_value":"T2DHKIM3VQQZ","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"T2DHKIM3VQQZMGSW","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"T2DHKIM3","created_at":"2026-05-18T12:29:42Z"}],"graph_snapshots":[{"event_id":"sha256:d98f0bd3e4df1115a0ee2f9b6ea10403d809c9024dae7d45b73599b6699fbc02","target":"graph","created_at":"2026-05-18T02:03:54Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Massive relic galaxies formed the bulk of their stellar component before z~2 and have remained unaltered since then. Therefore, they represent a unique opportunity to study in great detail the frozen stellar population properties of those galaxies that populated the primitive Universe. We have combined optical to near-infrared line-strength indices in order to infer, out to 1.5 Reff, the IMF of the nearby relic massive galaxy NGC 1277. The IMF of this galaxy is bottom-heavy at all radii, with the fraction of low-mass stars being at least a factor of two larger than that found in the Milky Way.","authors_text":"Alexandre Vazdekis, Anna Ferr\\'e-Mateu, Francesco La Barbera, Ignacio Mart\\'in-Navarro, Ignacio Trujillo, Michael A. Beasley","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-05-06T20:00:33Z","title":"The initial mass function of a massive relic galaxy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.01485","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:25c46e02e12e1306ce51772bf73a2ddbc89f4880a824f20d9cd903070263dab5","target":"record","created_at":"2026-05-18T02:03:54Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"2fa74e0556f6f3b3df55fe61dc5f3f25289507c9b5a4c24009d9143a0f372b0f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-05-06T20:00:33Z","title_canon_sha256":"fedfc2aaef8743239d7034165344f903138dbadd710d0e5e5bec16639a9322ef"},"schema_version":"1.0","source":{"id":"1505.01485","kind":"arxiv","version":2}},"canonical_sha256":"9e8675219bac21961a566b88660121f4b76a55dcd09b72240e897cbac4ba091b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9e8675219bac21961a566b88660121f4b76a55dcd09b72240e897cbac4ba091b","first_computed_at":"2026-05-18T02:03:54.573826Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:54.573826Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qvgQK+A3oLjZKHTs2KHA/QJ/rWYWXnU7iSNG3LXb176U9MSpz9WPbV+XBhuJ08vvpyfZ/X5d0p0BDReOr0bSCw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:54.574341Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.01485","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:25c46e02e12e1306ce51772bf73a2ddbc89f4880a824f20d9cd903070263dab5","sha256:d98f0bd3e4df1115a0ee2f9b6ea10403d809c9024dae7d45b73599b6699fbc02"],"state_sha256":"79e1a67ab9b275ac87acf864d827529bc2ddd5af912d6050d9c4417f13a228b6"}