{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:3W7VNU5MWNF6UYGVDNYXXSICSE","short_pith_number":"pith:3W7VNU5M","canonical_record":{"source":{"id":"1809.08240","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-21T18:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"e7698963db960fd806e3419e6dd1a1e9c07074ce026dac584c5e6183ccf103ef","abstract_canon_sha256":"8aa8178d2cb47fff826f4214063eacfe5d2cf7953d7226f00922bdb241451fa6"},"schema_version":"1.0"},"canonical_sha256":"ddbf56d3acb34bea60d51b717bc90291025f188cad4200945671d8def6e62b3d","source":{"kind":"arxiv","id":"1809.08240","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.08240","created_at":"2026-05-18T00:05:09Z"},{"alias_kind":"arxiv_version","alias_value":"1809.08240v1","created_at":"2026-05-18T00:05:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.08240","created_at":"2026-05-18T00:05:09Z"},{"alias_kind":"pith_short_12","alias_value":"3W7VNU5MWNF6","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"3W7VNU5MWNF6UYGV","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"3W7VNU5M","created_at":"2026-05-18T12:32:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:3W7VNU5MWNF6UYGVDNYXXSICSE","target":"record","payload":{"canonical_record":{"source":{"id":"1809.08240","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-21T18:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"e7698963db960fd806e3419e6dd1a1e9c07074ce026dac584c5e6183ccf103ef","abstract_canon_sha256":"8aa8178d2cb47fff826f4214063eacfe5d2cf7953d7226f00922bdb241451fa6"},"schema_version":"1.0"},"canonical_sha256":"ddbf56d3acb34bea60d51b717bc90291025f188cad4200945671d8def6e62b3d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:05:09.017999Z","signature_b64":"kmXSikjXsF3s1VHGAbWCq4wOC9Aj22zfl8lvADDhvRRqZ3sa+W5rLA9fun9k35DtxkYPgHyPDIPcpjvPUUZPAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ddbf56d3acb34bea60d51b717bc90291025f188cad4200945671d8def6e62b3d","last_reissued_at":"2026-05-18T00:05:09.017363Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:05:09.017363Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1809.08240","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":"2026-05-18T00:05:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tWFHsvULIit9zjl+QSYVvQOW5fM22coeqpVN7TB3U+zQu8CB8+geGUDQZbhWgo9cUgPRsiAzf5GHEzZwg6PvDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T06:06:43.225829Z"},"content_sha256":"30e5e9dbed33cea0eac05cc31051645f0afd61defd1e0e0a91898c530edf9b3b","schema_version":"1.0","event_id":"sha256:30e5e9dbed33cea0eac05cc31051645f0afd61defd1e0e0a91898c530edf9b3b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:3W7VNU5MWNF6UYGVDNYXXSICSE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"X-UDS: The Chandra Legacy Survey of the UKIDSS Ultra Deep Survey Field","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alexis Finoguenov, Andrea Comastri, Antonis Georgakakis, Anton M. Koekemoer, Casey Papovich, Christopher J. Conselice, Dale D. Kocevski, David M. Alexander, David Rosario, Francesca Civano, Guenther Hasinger, James Aird, James R. Mullaney, Johannes Buchner, John D. Silverman, Kirpal Nandra, Mara Salvato, Marcella Brusa, Mark A. Dickinson, Murray Brightman, Nico Cappelluti, Omar Almaini, Rachel S. Somerville, Roberto Gilli, Takamitsu Miyaji, Yanxia Li, Yoshihiro Ueda, Yuxuan Li","submitted_at":"2018-09-21T18:00:00Z","abstract_excerpt":"We present the X-UDS survey, a set of wide and deep Chandra observations of the Subaru-XMM Deep/UKIDSS Ultra Deep Survey (SXDS/UDS) field. The survey consists of 25 observations that cover a total area of 0.33 deg$^{2}$. The observations are combined to provide a nominal depth of ~600 ksec in the central 100 arcmin$^{2}$ region of the field that has been imaged with Hubble/WFC3 by the CANDELS survey and $\\sim$200 ksec in the remainder of the field. In this paper, we outline the survey's scientific goals, describe our observing strategy, and detail our data reduction and point source detection "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.08240","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":"2026-05-18T00:05:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BjbFLL1hAyvFWsWNyDi+iWQ8blKATs5FfXHKaN77uKHcUoIkAqIL7gPsqCgH92YCJJ8dTjA6zUuPIxWIpkVWAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T06:06:43.226707Z"},"content_sha256":"88fb9245991b4e675902611507c253d6f068c65f4dea601a7652fa1a2efad76e","schema_version":"1.0","event_id":"sha256:88fb9245991b4e675902611507c253d6f068c65f4dea601a7652fa1a2efad76e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3W7VNU5MWNF6UYGVDNYXXSICSE/bundle.json","state_url":"https://pith.science/pith/3W7VNU5MWNF6UYGVDNYXXSICSE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3W7VNU5MWNF6UYGVDNYXXSICSE/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":"2026-08-20T06:06:43Z","links":{"resolver":"https://pith.science/pith/3W7VNU5MWNF6UYGVDNYXXSICSE","bundle":"https://pith.science/pith/3W7VNU5MWNF6UYGVDNYXXSICSE/bundle.json","state":"https://pith.science/pith/3W7VNU5MWNF6UYGVDNYXXSICSE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3W7VNU5MWNF6UYGVDNYXXSICSE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:3W7VNU5MWNF6UYGVDNYXXSICSE","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":"8aa8178d2cb47fff826f4214063eacfe5d2cf7953d7226f00922bdb241451fa6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-21T18:00:00Z","title_canon_sha256":"e7698963db960fd806e3419e6dd1a1e9c07074ce026dac584c5e6183ccf103ef"},"schema_version":"1.0","source":{"id":"1809.08240","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.08240","created_at":"2026-05-18T00:05:09Z"},{"alias_kind":"arxiv_version","alias_value":"1809.08240v1","created_at":"2026-05-18T00:05:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.08240","created_at":"2026-05-18T00:05:09Z"},{"alias_kind":"pith_short_12","alias_value":"3W7VNU5MWNF6","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"3W7VNU5MWNF6UYGV","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"3W7VNU5M","created_at":"2026-05-18T12:32:05Z"}],"graph_snapshots":[{"event_id":"sha256:88fb9245991b4e675902611507c253d6f068c65f4dea601a7652fa1a2efad76e","target":"graph","created_at":"2026-05-18T00:05:09Z","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 X-UDS survey, a set of wide and deep Chandra observations of the Subaru-XMM Deep/UKIDSS Ultra Deep Survey (SXDS/UDS) field. The survey consists of 25 observations that cover a total area of 0.33 deg$^{2}$. The observations are combined to provide a nominal depth of ~600 ksec in the central 100 arcmin$^{2}$ region of the field that has been imaged with Hubble/WFC3 by the CANDELS survey and $\\sim$200 ksec in the remainder of the field. In this paper, we outline the survey's scientific goals, describe our observing strategy, and detail our data reduction and point source detection ","authors_text":"Alexis Finoguenov, Andrea Comastri, Antonis Georgakakis, Anton M. Koekemoer, Casey Papovich, Christopher J. Conselice, Dale D. Kocevski, David M. Alexander, David Rosario, Francesca Civano, Guenther Hasinger, James Aird, James R. Mullaney, Johannes Buchner, John D. Silverman, Kirpal Nandra, Mara Salvato, Marcella Brusa, Mark A. Dickinson, Murray Brightman, Nico Cappelluti, Omar Almaini, Rachel S. Somerville, Roberto Gilli, Takamitsu Miyaji, Yanxia Li, Yoshihiro Ueda, Yuxuan Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-21T18:00:00Z","title":"X-UDS: The Chandra Legacy Survey of the UKIDSS Ultra Deep Survey Field"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.08240","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":"sha256:30e5e9dbed33cea0eac05cc31051645f0afd61defd1e0e0a91898c530edf9b3b","target":"record","created_at":"2026-05-18T00:05:09Z","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":"8aa8178d2cb47fff826f4214063eacfe5d2cf7953d7226f00922bdb241451fa6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-21T18:00:00Z","title_canon_sha256":"e7698963db960fd806e3419e6dd1a1e9c07074ce026dac584c5e6183ccf103ef"},"schema_version":"1.0","source":{"id":"1809.08240","kind":"arxiv","version":1}},"canonical_sha256":"ddbf56d3acb34bea60d51b717bc90291025f188cad4200945671d8def6e62b3d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ddbf56d3acb34bea60d51b717bc90291025f188cad4200945671d8def6e62b3d","first_computed_at":"2026-05-18T00:05:09.017363Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:05:09.017363Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kmXSikjXsF3s1VHGAbWCq4wOC9Aj22zfl8lvADDhvRRqZ3sa+W5rLA9fun9k35DtxkYPgHyPDIPcpjvPUUZPAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:05:09.017999Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.08240","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:30e5e9dbed33cea0eac05cc31051645f0afd61defd1e0e0a91898c530edf9b3b","sha256:88fb9245991b4e675902611507c253d6f068c65f4dea601a7652fa1a2efad76e"],"state_sha256":"ede2c2b61b29b881993fd3f6581f76934405686d84f3bc3092e8e4ec98b9d8bd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KiiWH7brw4wA5XT9xy0kcUaNnsWBRednjjCqRC0sP3Aoi2xZrHqICb6/x3kaeo1S664/G+U8AWMR2luwQcpuAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T06:06:43.232626Z","bundle_sha256":"273a6f90b67c25acc100bd5b945c6543fcc8675d4cd35e7272dc47ed9535bb96"}}