{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:BSVZCJX5XPOOAPDPUHFRM5LNYM","short_pith_number":"pith:BSVZCJX5","canonical_record":{"source":{"id":"1506.08249","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-27T02:32:28Z","cross_cats_sorted":[],"title_canon_sha256":"d12435101ea86b8d5c9a43423076eb4567652ef0b5b473e7f17a822fbe8a94b1","abstract_canon_sha256":"0d463523671518cffeed41ac45cd538cede195fa6c44caaddf7ac43c5b28b6d7"},"schema_version":"1.0"},"canonical_sha256":"0cab9126fdbbdce03c6fa1cb16756dc3162d3d928b05b28de8f956cc346a6d44","source":{"kind":"arxiv","id":"1506.08249","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.08249","created_at":"2026-05-18T00:54:48Z"},{"alias_kind":"arxiv_version","alias_value":"1506.08249v2","created_at":"2026-05-18T00:54:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.08249","created_at":"2026-05-18T00:54:48Z"},{"alias_kind":"pith_short_12","alias_value":"BSVZCJX5XPOO","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"BSVZCJX5XPOOAPDP","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"BSVZCJX5","created_at":"2026-05-18T12:29:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:BSVZCJX5XPOOAPDPUHFRM5LNYM","target":"record","payload":{"canonical_record":{"source":{"id":"1506.08249","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-27T02:32:28Z","cross_cats_sorted":[],"title_canon_sha256":"d12435101ea86b8d5c9a43423076eb4567652ef0b5b473e7f17a822fbe8a94b1","abstract_canon_sha256":"0d463523671518cffeed41ac45cd538cede195fa6c44caaddf7ac43c5b28b6d7"},"schema_version":"1.0"},"canonical_sha256":"0cab9126fdbbdce03c6fa1cb16756dc3162d3d928b05b28de8f956cc346a6d44","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:54:48.227356Z","signature_b64":"MwbieuAcEVlwBAOLWe6/SYeoB+TWJeoMKLMd+K4smrljNcxBFNhR3/PJgbQV0MY0A9LCgs1/mGMVCySj6nu3Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0cab9126fdbbdce03c6fa1cb16756dc3162d3d928b05b28de8f956cc346a6d44","last_reissued_at":"2026-05-18T00:54:48.226879Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:54:48.226879Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1506.08249","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":"2026-05-18T00:54:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H51joxHt8y13im8Uxjauog7gXaghtUgR0NQQ+/KGYhqS3EtwQgCggNFAY5U3UMOLB8CnX8jFODiBRgY4BgppCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T23:13:30.434286Z"},"content_sha256":"7dcd6d8e3b61af8f1a33b0905ee91eb24b5f45365e30792b0dbbcc22729adf2e","schema_version":"1.0","event_id":"sha256:7dcd6d8e3b61af8f1a33b0905ee91eb24b5f45365e30792b0dbbcc22729adf2e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:BSVZCJX5XPOOAPDPUHFRM5LNYM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Systematic Search for Lensed High-Redshift Galaxies in HST Images of MACS Clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Andrew Repp, Harald Ebeling, Johan Richard","submitted_at":"2015-06-27T02:32:28Z","abstract_excerpt":"We present the results of a 135-arcmin$^2$ search for high-redshift galaxies lensed by 29 clusters from the MAssive Cluster and extended MAssive Cluster Surveys (MACS and eMACS). We use relatively shallow images obtained with the Hubble Space Telescope in four passbands, namely, F606W, F814W, F110W, and F140W. We identify 130 F814W dropouts as candidates for galaxies at $z \\le 6$. In order to fit the available broad-band photometry to galaxy spectral energy distribution (SED) templates, we develop a prior for the level of dust extinction at various redshifts. We also investigate the systematic"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.08249","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":"2026-05-18T00:54:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rYjNjCpOZMyEUHiaPjF7ZICTFGkN7DDws2KGv/X1w1af5RkxJvcJL0pXKh+DV4k6ynxN9AlpbPTiejEAu3/GBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T23:13:30.434673Z"},"content_sha256":"0b59b28582a98b1a6ff79efc8d8f83a55a723f85f911e23a512fde0cd61ad6b2","schema_version":"1.0","event_id":"sha256:0b59b28582a98b1a6ff79efc8d8f83a55a723f85f911e23a512fde0cd61ad6b2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BSVZCJX5XPOOAPDPUHFRM5LNYM/bundle.json","state_url":"https://pith.science/pith/BSVZCJX5XPOOAPDPUHFRM5LNYM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BSVZCJX5XPOOAPDPUHFRM5LNYM/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":"2026-06-02T23:13:30Z","links":{"resolver":"https://pith.science/pith/BSVZCJX5XPOOAPDPUHFRM5LNYM","bundle":"https://pith.science/pith/BSVZCJX5XPOOAPDPUHFRM5LNYM/bundle.json","state":"https://pith.science/pith/BSVZCJX5XPOOAPDPUHFRM5LNYM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BSVZCJX5XPOOAPDPUHFRM5LNYM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:BSVZCJX5XPOOAPDPUHFRM5LNYM","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":"0d463523671518cffeed41ac45cd538cede195fa6c44caaddf7ac43c5b28b6d7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-27T02:32:28Z","title_canon_sha256":"d12435101ea86b8d5c9a43423076eb4567652ef0b5b473e7f17a822fbe8a94b1"},"schema_version":"1.0","source":{"id":"1506.08249","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.08249","created_at":"2026-05-18T00:54:48Z"},{"alias_kind":"arxiv_version","alias_value":"1506.08249v2","created_at":"2026-05-18T00:54:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.08249","created_at":"2026-05-18T00:54:48Z"},{"alias_kind":"pith_short_12","alias_value":"BSVZCJX5XPOO","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"BSVZCJX5XPOOAPDP","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"BSVZCJX5","created_at":"2026-05-18T12:29:14Z"}],"graph_snapshots":[{"event_id":"sha256:0b59b28582a98b1a6ff79efc8d8f83a55a723f85f911e23a512fde0cd61ad6b2","target":"graph","created_at":"2026-05-18T00:54:48Z","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 the results of a 135-arcmin$^2$ search for high-redshift galaxies lensed by 29 clusters from the MAssive Cluster and extended MAssive Cluster Surveys (MACS and eMACS). We use relatively shallow images obtained with the Hubble Space Telescope in four passbands, namely, F606W, F814W, F110W, and F140W. We identify 130 F814W dropouts as candidates for galaxies at $z \\le 6$. In order to fit the available broad-band photometry to galaxy spectral energy distribution (SED) templates, we develop a prior for the level of dust extinction at various redshifts. We also investigate the systematic","authors_text":"Andrew Repp, Harald Ebeling, Johan Richard","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-27T02:32:28Z","title":"A Systematic Search for Lensed High-Redshift Galaxies in HST Images of MACS Clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.08249","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":"sha256:7dcd6d8e3b61af8f1a33b0905ee91eb24b5f45365e30792b0dbbcc22729adf2e","target":"record","created_at":"2026-05-18T00:54:48Z","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":"0d463523671518cffeed41ac45cd538cede195fa6c44caaddf7ac43c5b28b6d7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-27T02:32:28Z","title_canon_sha256":"d12435101ea86b8d5c9a43423076eb4567652ef0b5b473e7f17a822fbe8a94b1"},"schema_version":"1.0","source":{"id":"1506.08249","kind":"arxiv","version":2}},"canonical_sha256":"0cab9126fdbbdce03c6fa1cb16756dc3162d3d928b05b28de8f956cc346a6d44","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0cab9126fdbbdce03c6fa1cb16756dc3162d3d928b05b28de8f956cc346a6d44","first_computed_at":"2026-05-18T00:54:48.226879Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:54:48.226879Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MwbieuAcEVlwBAOLWe6/SYeoB+TWJeoMKLMd+K4smrljNcxBFNhR3/PJgbQV0MY0A9LCgs1/mGMVCySj6nu3Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T00:54:48.227356Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.08249","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7dcd6d8e3b61af8f1a33b0905ee91eb24b5f45365e30792b0dbbcc22729adf2e","sha256:0b59b28582a98b1a6ff79efc8d8f83a55a723f85f911e23a512fde0cd61ad6b2"],"state_sha256":"479a3db8b3175d746fae4506b8b3b344b66e7f765c150507b6e7fb43bcac1d1a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3t+T+mXNyChqnbrheXudBiTkW7y+J1cBLRDiwOgMSCDWbz7+9sx8rsFkKOGFgbU6PSVxBCen9d248T1oKYD9Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T23:13:30.436642Z","bundle_sha256":"c1290c8d179fc1271afb14456622996277020fdd6b69e1cc4393a4e6056b6a1f"}}