{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:EKEP6VK2BFGQOQEFDL2KWIVSS6","short_pith_number":"pith:EKEP6VK2","canonical_record":{"source":{"id":"1311.1569","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-11-07T04:08:52Z","cross_cats_sorted":[],"title_canon_sha256":"11b928b7fb7a5e40808c01cc57ba0cc60d770ac31a33e5b8d6a34c85de111203","abstract_canon_sha256":"05a4ea35d34caa23304c3d70c99749cf61ed065c563abed8165066f21cfb7fa2"},"schema_version":"1.0"},"canonical_sha256":"2288ff555a094d0740851af4ab22b2979b368c95c0e4da294d77075b15ba660d","source":{"kind":"arxiv","id":"1311.1569","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.1569","created_at":"2026-05-18T01:46:38Z"},{"alias_kind":"arxiv_version","alias_value":"1311.1569v1","created_at":"2026-05-18T01:46:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.1569","created_at":"2026-05-18T01:46:38Z"},{"alias_kind":"pith_short_12","alias_value":"EKEP6VK2BFGQ","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"EKEP6VK2BFGQOQEF","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"EKEP6VK2","created_at":"2026-05-18T12:27:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:EKEP6VK2BFGQOQEFDL2KWIVSS6","target":"record","payload":{"canonical_record":{"source":{"id":"1311.1569","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-11-07T04:08:52Z","cross_cats_sorted":[],"title_canon_sha256":"11b928b7fb7a5e40808c01cc57ba0cc60d770ac31a33e5b8d6a34c85de111203","abstract_canon_sha256":"05a4ea35d34caa23304c3d70c99749cf61ed065c563abed8165066f21cfb7fa2"},"schema_version":"1.0"},"canonical_sha256":"2288ff555a094d0740851af4ab22b2979b368c95c0e4da294d77075b15ba660d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:46:38.003661Z","signature_b64":"kPRjnG2MKHGRAfGUpftABjFaer9rfJ9bKjp3SnuHNqmIDGw59MJJ2Vygy4JvNH1kELDzGpMpYV1OKmyz2M9yCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2288ff555a094d0740851af4ab22b2979b368c95c0e4da294d77075b15ba660d","last_reissued_at":"2026-05-18T01:46:38.003148Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:46:38.003148Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1311.1569","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:46:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IUPwdZfedi68FFvpiFcvQfoqIdn6ebgsgnQuYOyKYc2BIRjBaF/it3IkCEbyy2VhEKUuYcDfQBt9TXv7orRHBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T21:21:51.534772Z"},"content_sha256":"8d263d29f5bcf4471f50429934a276a157353187939b7d92b014f650c0e17a8d","schema_version":"1.0","event_id":"sha256:8d263d29f5bcf4471f50429934a276a157353187939b7d92b014f650c0e17a8d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:EKEP6VK2BFGQOQEFDL2KWIVSS6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Detection, size, measurement and structural analysis limits for the 2MASS, UKIDSS-LAS & VISTA VIKING surveys","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Aaron S. G. Robotham, Lee S. Kelvin, Simon P. Driver, Stephen K. Andrews","submitted_at":"2013-11-07T04:08:52Z","abstract_excerpt":"The 2MASS, UKIDSS-LAS and VISTA VIKING surveys have all now observed the GAMA 9hr region in the $K_s$ band. Here we compare the detection rates, photometry, basic size measurements, and single-component GALFIT structural measurements for a sample of 37,591 galaxies. We explore the sensitivity limits where the data agree for a variety of issues including: detection, star-galaxy separation, photometric measurements, size and ellipticity measurements, and S\\'{e}rsic measurements. We find that 2MASS fails to detect at least 20% of the galaxy population within all magnitude bins, however for those "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.1569","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:46:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4O4jVKsRn6ALxGMIN46AJDDQaGYMMUqBVJPWo+r2IjZqkCvL90LisCv4UeozUlH5VWqN3bGUY39zFCCkRjuKBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T21:21:51.535182Z"},"content_sha256":"2cbc2f30a8fa0c613af34ab46a6de9d15979a26a0279ee348230305382b16d9d","schema_version":"1.0","event_id":"sha256:2cbc2f30a8fa0c613af34ab46a6de9d15979a26a0279ee348230305382b16d9d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EKEP6VK2BFGQOQEFDL2KWIVSS6/bundle.json","state_url":"https://pith.science/pith/EKEP6VK2BFGQOQEFDL2KWIVSS6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EKEP6VK2BFGQOQEFDL2KWIVSS6/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":"2026-05-29T21:21:51Z","links":{"resolver":"https://pith.science/pith/EKEP6VK2BFGQOQEFDL2KWIVSS6","bundle":"https://pith.science/pith/EKEP6VK2BFGQOQEFDL2KWIVSS6/bundle.json","state":"https://pith.science/pith/EKEP6VK2BFGQOQEFDL2KWIVSS6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EKEP6VK2BFGQOQEFDL2KWIVSS6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:EKEP6VK2BFGQOQEFDL2KWIVSS6","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":"05a4ea35d34caa23304c3d70c99749cf61ed065c563abed8165066f21cfb7fa2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-11-07T04:08:52Z","title_canon_sha256":"11b928b7fb7a5e40808c01cc57ba0cc60d770ac31a33e5b8d6a34c85de111203"},"schema_version":"1.0","source":{"id":"1311.1569","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.1569","created_at":"2026-05-18T01:46:38Z"},{"alias_kind":"arxiv_version","alias_value":"1311.1569v1","created_at":"2026-05-18T01:46:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.1569","created_at":"2026-05-18T01:46:38Z"},{"alias_kind":"pith_short_12","alias_value":"EKEP6VK2BFGQ","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"EKEP6VK2BFGQOQEF","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"EKEP6VK2","created_at":"2026-05-18T12:27:43Z"}],"graph_snapshots":[{"event_id":"sha256:2cbc2f30a8fa0c613af34ab46a6de9d15979a26a0279ee348230305382b16d9d","target":"graph","created_at":"2026-05-18T01:46:38Z","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":"The 2MASS, UKIDSS-LAS and VISTA VIKING surveys have all now observed the GAMA 9hr region in the $K_s$ band. Here we compare the detection rates, photometry, basic size measurements, and single-component GALFIT structural measurements for a sample of 37,591 galaxies. We explore the sensitivity limits where the data agree for a variety of issues including: detection, star-galaxy separation, photometric measurements, size and ellipticity measurements, and S\\'{e}rsic measurements. We find that 2MASS fails to detect at least 20% of the galaxy population within all magnitude bins, however for those ","authors_text":"Aaron S. G. Robotham, Lee S. Kelvin, Simon P. Driver, Stephen K. Andrews","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-11-07T04:08:52Z","title":"Detection, size, measurement and structural analysis limits for the 2MASS, UKIDSS-LAS & VISTA VIKING surveys"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.1569","kind":"arxiv","version":1},"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":"sha256:8d263d29f5bcf4471f50429934a276a157353187939b7d92b014f650c0e17a8d","target":"record","created_at":"2026-05-18T01:46:38Z","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":"05a4ea35d34caa23304c3d70c99749cf61ed065c563abed8165066f21cfb7fa2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-11-07T04:08:52Z","title_canon_sha256":"11b928b7fb7a5e40808c01cc57ba0cc60d770ac31a33e5b8d6a34c85de111203"},"schema_version":"1.0","source":{"id":"1311.1569","kind":"arxiv","version":1}},"canonical_sha256":"2288ff555a094d0740851af4ab22b2979b368c95c0e4da294d77075b15ba660d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2288ff555a094d0740851af4ab22b2979b368c95c0e4da294d77075b15ba660d","first_computed_at":"2026-05-18T01:46:38.003148Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:46:38.003148Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kPRjnG2MKHGRAfGUpftABjFaer9rfJ9bKjp3SnuHNqmIDGw59MJJ2Vygy4JvNH1kELDzGpMpYV1OKmyz2M9yCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:46:38.003661Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.1569","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8d263d29f5bcf4471f50429934a276a157353187939b7d92b014f650c0e17a8d","sha256:2cbc2f30a8fa0c613af34ab46a6de9d15979a26a0279ee348230305382b16d9d"],"state_sha256":"b655b1647a6af308e401da4ae8c8db8ad22aabd4548e3d424414de06a9d1143b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VIA1MDukSfDXUnyDjeAL4h3dKyi0tw9LrE0zNkz3soo6IOYlhmVPz3gTNTEzZ/Fa7Z4OifpwnMZWdvEIcm6tBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T21:21:51.539682Z","bundle_sha256":"63a590d161a11ceab050eb8946700f6322d3f90ace2cb79d26b36585335d0c5f"}}