{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:N4IQ7HG7GEZU27MGAYS6S4DEC5","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":"6039203d9b9082ab4560f1eaca0f572693bff274c2ed3aa9b4b616a8eb5c9169","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-06-11T19:51:21Z","title_canon_sha256":"38ecf3ff2623d091aab8bce6f2a6a70e826002a68121f97a78e6d8ee87f0cd0e"},"schema_version":"1.0","source":{"id":"astro-ph/0306215","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0306215","created_at":"2026-07-04T15:20:11Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0306215v1","created_at":"2026-07-04T15:20:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0306215","created_at":"2026-07-04T15:20:11Z"},{"alias_kind":"pith_short_12","alias_value":"N4IQ7HG7GEZU","created_at":"2026-07-04T15:20:11Z"},{"alias_kind":"pith_short_16","alias_value":"N4IQ7HG7GEZU27MG","created_at":"2026-07-04T15:20:11Z"},{"alias_kind":"pith_short_8","alias_value":"N4IQ7HG7","created_at":"2026-07-04T15:20:11Z"}],"graph_snapshots":[{"event_id":"sha256:d11026bd9447f263d8ff114e14fc230a2a02b11106ab5f834ad2df930c7137ac","target":"graph","created_at":"2026-07-04T15:20:11Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0306215/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Using an i-z dropout criterion, we determine the space density of z~6 galaxies from two deep ACS GTO fields with deep optical-IR imaging. A total of 23 objects are found over 46 arcmin^2, or ~0.5 objects/arcmin^2 down to z~27.3 (6 sigma; all AB mag) (including one probable z~6 AGN). Combining deep ISAAC data for our RDCS1252-2927 field (J~25.7 and Ks~25.0 (5 sigma)) and NICMOS data for the HDF North (JH~27.3 (5 sigma)), we verify that these dropouts have flat spectral slopes. i-dropouts in our sample range in luminosity from ~1.5 L* (z~25.6) to ~0.3 L* (z~27.3) with the exception of one very b","authors_text":"A.R. Martel, C. Gronwall, C.J. Burrows, C. Lidman, D.A. Golimowski, D. Magee, D.R. Ardila, E.S. Cheng, F. Bartko, F. Menanteau, G.D. Illingworth, G.F. Hartig, G.K. Miley, G.R. Meurer, H.C. Ford, H.D. Tran, J.E. Krist, J.P. Blakeslee, L. Infante, M. Clampin, M. Franx, M.P. Lesser, M. Postman, M. Sirianni, N. Benitez, N.J.G. Cross, P.D. Feldman, P. Rosati, R.A. Brown, R.A. Kimble, R.J. Bouwens, R.L. White & W. Zheng, T. Broadhurst, W.B. Sparks, Z.I. Tsvetanov","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2003-06-11T19:51:21Z","title":"Star Formation at z~6: i-dropouts in the ACS GTO fields"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0306215","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":"sha256:962301f386ff4a9fd51d2efc921994c66dbc64ec5e03425c8f7fe75afd9ee795","target":"record","created_at":"2026-07-04T15:20:11Z","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":"6039203d9b9082ab4560f1eaca0f572693bff274c2ed3aa9b4b616a8eb5c9169","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-06-11T19:51:21Z","title_canon_sha256":"38ecf3ff2623d091aab8bce6f2a6a70e826002a68121f97a78e6d8ee87f0cd0e"},"schema_version":"1.0","source":{"id":"astro-ph/0306215","kind":"arxiv","version":1}},"canonical_sha256":"6f110f9cdf31334d7d860625e97064174d69efd15e50e11fffb796beabbbe321","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6f110f9cdf31334d7d860625e97064174d69efd15e50e11fffb796beabbbe321","first_computed_at":"2026-07-04T15:20:11.305743Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:20:11.305743Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WJDAcUb+GHDP1gTM0av6MCG200hCULsfUdS3Aw12kut4ft+C/Bn7nJtL4IJU1Vb+PCk6JTwHWVBisc9OMEczCA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:20:11.306168Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0306215","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:962301f386ff4a9fd51d2efc921994c66dbc64ec5e03425c8f7fe75afd9ee795","sha256:d11026bd9447f263d8ff114e14fc230a2a02b11106ab5f834ad2df930c7137ac"],"state_sha256":"20efebba4f5795a910e8bbaca38109136d4421a18cdda424bd7dd89ab6211646"}