{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:SMYIJ4ZQLZYXLYFCYDNSQQNZCL","short_pith_number":"pith:SMYIJ4ZQ","canonical_record":{"source":{"id":"1708.06849","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-22T23:27:22Z","cross_cats_sorted":[],"title_canon_sha256":"d2812f414b69339ac26e3356de1feb9836ad70c15e6b89c9080b6b47f01b0443","abstract_canon_sha256":"71eee0846391f7538be8f2e580f862056f876190053a8f42c6d2f1c3792cfbb0"},"schema_version":"1.0"},"canonical_sha256":"933084f3305e7175e0a2c0db2841b912fb9b52609bb8fd35fdf666ef350aedf1","source":{"kind":"arxiv","id":"1708.06849","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.06849","created_at":"2026-05-18T00:36:42Z"},{"alias_kind":"arxiv_version","alias_value":"1708.06849v2","created_at":"2026-05-18T00:36:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.06849","created_at":"2026-05-18T00:36:42Z"},{"alias_kind":"pith_short_12","alias_value":"SMYIJ4ZQLZYX","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SMYIJ4ZQLZYXLYFC","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SMYIJ4ZQ","created_at":"2026-05-18T12:31:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:SMYIJ4ZQLZYXLYFCYDNSQQNZCL","target":"record","payload":{"canonical_record":{"source":{"id":"1708.06849","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-22T23:27:22Z","cross_cats_sorted":[],"title_canon_sha256":"d2812f414b69339ac26e3356de1feb9836ad70c15e6b89c9080b6b47f01b0443","abstract_canon_sha256":"71eee0846391f7538be8f2e580f862056f876190053a8f42c6d2f1c3792cfbb0"},"schema_version":"1.0"},"canonical_sha256":"933084f3305e7175e0a2c0db2841b912fb9b52609bb8fd35fdf666ef350aedf1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:36:42.877429Z","signature_b64":"PiPmlxBd53vaKtJCYh67p4E6Iw/nS4l3dgUNDBN28xlATNutV7961IcVJmhQYt4i8l4smUiCDzAt+QeZpgGqAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"933084f3305e7175e0a2c0db2841b912fb9b52609bb8fd35fdf666ef350aedf1","last_reissued_at":"2026-05-18T00:36:42.876782Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:36:42.876782Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.06849","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:36:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PXbYQnhgZTMGb+XJJVgu/Grh4S9z0vkJ4/7HGke+XTOXVKF0NZwlReAavAhmFp45OzDqYr2urhrZbx9ZaIGFBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T17:04:21.834093Z"},"content_sha256":"32c26eb83c48a1d43b725a17bd3332fe5d47fcb25ae6eb98057f04ae67519764","schema_version":"1.0","event_id":"sha256:32c26eb83c48a1d43b725a17bd3332fe5d47fcb25ae6eb98057f04ae67519764"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:SMYIJ4ZQLZYXLYFCYDNSQQNZCL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The SAMI Galaxy Survey: Global stellar populations on the size-mass plane","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Amanda J. Moffett, Anne M. Medling, A. S. G. Robotham, Brent Groves, Chiara Tonini, Christoph Federrath, Francesco D'Eugenio, Ignacio Ferreras, Iraklis Konstantopoulos, Jesse van de Sande, Jon S. Lawrence, Joss Bland-Hawthorn, J. T. Allen, Julia J. Bryant, Luca Cortese, Matt S. Owers, Michael Goodwin, Nicholas Scott, Roger L. Davies, Samuel Richards, S. Brough, Scott M. Croom, Sukyoung K. Yi","submitted_at":"2017-08-22T23:27:22Z","abstract_excerpt":"We present an analysis of the global stellar populations of galaxies in the SAMI Galaxy Survey. Our sample consists of 1319 galaxies spanning four orders of magnitude in stellar mass and includes all morphologies and environments. We derive luminosity-weighted, single stellar population equivalent stellar ages, metallicities and alpha enhancements from spectra integrated within one effective radius apertures. Variations in galaxy size explain the majority of the scatter in the age--mass and metallicity--mass relations. Stellar populations vary systematically in the plane of galaxy size and ste"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.06849","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:36:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M+zr9Cz7G4vDraKewhPpGjAc2mLu60Vs0AKI0TEOjHZjUxzgZM3M29YoAcVwvbDGHEViCPhPsteWPnIZTtbkBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T17:04:21.834775Z"},"content_sha256":"7737d7d1edfd99f0fa443e8cb1c2ccb33657e88e1ce23adbefd8bcfc316d9e0f","schema_version":"1.0","event_id":"sha256:7737d7d1edfd99f0fa443e8cb1c2ccb33657e88e1ce23adbefd8bcfc316d9e0f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SMYIJ4ZQLZYXLYFCYDNSQQNZCL/bundle.json","state_url":"https://pith.science/pith/SMYIJ4ZQLZYXLYFCYDNSQQNZCL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SMYIJ4ZQLZYXLYFCYDNSQQNZCL/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-07T17:04:21Z","links":{"resolver":"https://pith.science/pith/SMYIJ4ZQLZYXLYFCYDNSQQNZCL","bundle":"https://pith.science/pith/SMYIJ4ZQLZYXLYFCYDNSQQNZCL/bundle.json","state":"https://pith.science/pith/SMYIJ4ZQLZYXLYFCYDNSQQNZCL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SMYIJ4ZQLZYXLYFCYDNSQQNZCL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:SMYIJ4ZQLZYXLYFCYDNSQQNZCL","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":"71eee0846391f7538be8f2e580f862056f876190053a8f42c6d2f1c3792cfbb0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-22T23:27:22Z","title_canon_sha256":"d2812f414b69339ac26e3356de1feb9836ad70c15e6b89c9080b6b47f01b0443"},"schema_version":"1.0","source":{"id":"1708.06849","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.06849","created_at":"2026-05-18T00:36:42Z"},{"alias_kind":"arxiv_version","alias_value":"1708.06849v2","created_at":"2026-05-18T00:36:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.06849","created_at":"2026-05-18T00:36:42Z"},{"alias_kind":"pith_short_12","alias_value":"SMYIJ4ZQLZYX","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SMYIJ4ZQLZYXLYFC","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SMYIJ4ZQ","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:7737d7d1edfd99f0fa443e8cb1c2ccb33657e88e1ce23adbefd8bcfc316d9e0f","target":"graph","created_at":"2026-05-18T00:36:42Z","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":"We present an analysis of the global stellar populations of galaxies in the SAMI Galaxy Survey. Our sample consists of 1319 galaxies spanning four orders of magnitude in stellar mass and includes all morphologies and environments. We derive luminosity-weighted, single stellar population equivalent stellar ages, metallicities and alpha enhancements from spectra integrated within one effective radius apertures. Variations in galaxy size explain the majority of the scatter in the age--mass and metallicity--mass relations. Stellar populations vary systematically in the plane of galaxy size and ste","authors_text":"Amanda J. Moffett, Anne M. Medling, A. S. G. Robotham, Brent Groves, Chiara Tonini, Christoph Federrath, Francesco D'Eugenio, Ignacio Ferreras, Iraklis Konstantopoulos, Jesse van de Sande, Jon S. Lawrence, Joss Bland-Hawthorn, J. T. Allen, Julia J. Bryant, Luca Cortese, Matt S. Owers, Michael Goodwin, Nicholas Scott, Roger L. Davies, Samuel Richards, S. Brough, Scott M. Croom, Sukyoung K. Yi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-22T23:27:22Z","title":"The SAMI Galaxy Survey: Global stellar populations on the size-mass plane"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.06849","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":"sha256:32c26eb83c48a1d43b725a17bd3332fe5d47fcb25ae6eb98057f04ae67519764","target":"record","created_at":"2026-05-18T00:36:42Z","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":"71eee0846391f7538be8f2e580f862056f876190053a8f42c6d2f1c3792cfbb0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-22T23:27:22Z","title_canon_sha256":"d2812f414b69339ac26e3356de1feb9836ad70c15e6b89c9080b6b47f01b0443"},"schema_version":"1.0","source":{"id":"1708.06849","kind":"arxiv","version":2}},"canonical_sha256":"933084f3305e7175e0a2c0db2841b912fb9b52609bb8fd35fdf666ef350aedf1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"933084f3305e7175e0a2c0db2841b912fb9b52609bb8fd35fdf666ef350aedf1","first_computed_at":"2026-05-18T00:36:42.876782Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:36:42.876782Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PiPmlxBd53vaKtJCYh67p4E6Iw/nS4l3dgUNDBN28xlATNutV7961IcVJmhQYt4i8l4smUiCDzAt+QeZpgGqAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:36:42.877429Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.06849","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:32c26eb83c48a1d43b725a17bd3332fe5d47fcb25ae6eb98057f04ae67519764","sha256:7737d7d1edfd99f0fa443e8cb1c2ccb33657e88e1ce23adbefd8bcfc316d9e0f"],"state_sha256":"e1721d6c773ae38320c7414a8f7922178ff84d98ffbe846c0a6cad6ce13841f7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XLo/HqeIlXxYZLsrwSbKLJXYZi+JleF59IQkrYKYQcmgbKD/SSRrW5ffmtwDRx6r71YtrXinNxgU2qovOJ0iCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T17:04:21.838211Z","bundle_sha256":"1b0000ceee37397459902461c5a5ef4b628bb0c8bd0aa78e2134136b764d6fdb"}}