{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:RX3KQ4B7RPJMOSNTCK3YGSRH36","short_pith_number":"pith:RX3KQ4B7","canonical_record":{"source":{"id":"2111.01447","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-11-02T09:11:13Z","cross_cats_sorted":[],"title_canon_sha256":"84e2847b1f99feaeb4948ce449f3aaa90c447be9dc7229767201331016813f25","abstract_canon_sha256":"13ba4bc44bbf9ea740e0ff3964b07eba5f0c67182d0e1e76b4a1982270831cab"},"schema_version":"1.0"},"canonical_sha256":"8df6a8703f8bd2c749b312b7834a27dfb3530edfbcccb264eaa4f4b1d8a0b3b1","source":{"kind":"arxiv","id":"2111.01447","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.01447","created_at":"2026-07-05T03:49:24Z"},{"alias_kind":"arxiv_version","alias_value":"2111.01447v1","created_at":"2026-07-05T03:49:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.01447","created_at":"2026-07-05T03:49:24Z"},{"alias_kind":"pith_short_12","alias_value":"RX3KQ4B7RPJM","created_at":"2026-07-05T03:49:24Z"},{"alias_kind":"pith_short_16","alias_value":"RX3KQ4B7RPJMOSNT","created_at":"2026-07-05T03:49:24Z"},{"alias_kind":"pith_short_8","alias_value":"RX3KQ4B7","created_at":"2026-07-05T03:49:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:RX3KQ4B7RPJMOSNTCK3YGSRH36","target":"record","payload":{"canonical_record":{"source":{"id":"2111.01447","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-11-02T09:11:13Z","cross_cats_sorted":[],"title_canon_sha256":"84e2847b1f99feaeb4948ce449f3aaa90c447be9dc7229767201331016813f25","abstract_canon_sha256":"13ba4bc44bbf9ea740e0ff3964b07eba5f0c67182d0e1e76b4a1982270831cab"},"schema_version":"1.0"},"canonical_sha256":"8df6a8703f8bd2c749b312b7834a27dfb3530edfbcccb264eaa4f4b1d8a0b3b1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:49:24.026922Z","signature_b64":"xkJ4d9I/lwflcZV9sviwMW5JPHwX/r+6ht2wWJcwmV0iy36iI7COEsW10BW+eUcAlhhiSxIKg8VXljxgS6tDBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8df6a8703f8bd2c749b312b7834a27dfb3530edfbcccb264eaa4f4b1d8a0b3b1","last_reissued_at":"2026-07-05T03:49:24.026429Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:49:24.026429Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2111.01447","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":"2026-07-05T03:49:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ynhbHeuVNUVGePTlAayoMWxi0QdZE6WmFF1tUsDpbOTPDZFgMqRV+60wbsMT5eXqPSfLcN6tSwmTac8jY4B+BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T14:43:48.270162Z"},"content_sha256":"d5afb39e020a2a71b32a81e81a3ed5d3ab83921eed634579b8c20d8de3e9c7d9","schema_version":"1.0","event_id":"sha256:d5afb39e020a2a71b32a81e81a3ed5d3ab83921eed634579b8c20d8de3e9c7d9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:RX3KQ4B7RPJMOSNTCK3YGSRH36","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Search for H$\\alpha$ Emitters at $z\\sim7.8$: A Constraint on the H$\\alpha$-based Star Formation Rate Density","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"K. Ohta (Department of Astronomy Kyoto University), Y. Asada","submitted_at":"2021-11-02T09:11:13Z","abstract_excerpt":"We search for H$\\alpha$ emitters at $z\\sim7.8$ in four gravitationally lensed fields observed in the Hubble Frontier Fields program. We use the Lyman break method to select galaxies at the target redshift, and make the photometry in {\\it Spitzer}/IRAC 5.8 $\\mu$m band to detect the H$\\alpha$ emission from the candidate galaxies. We find no significant detection of counterparts in the IRAC 5.8 $\\mu$m band, and this gives a constraint on the H$\\alpha$ luminosity function (LF) at $z\\sim7.8$. We compare the constraint with previous studies on rest-frame UV and FIR observation using the correlation "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.01447","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2111.01447/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T03:49:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f9Sx2oEcT5j0WKCVdg7JXQ1oR5meUvU6BCdiVYzAiz93l/ZklRyNPonVoWHfcd/rxZcqMRo/YKb8Dpmr0KtBBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T14:43:48.270545Z"},"content_sha256":"397635564888b4dfc49e74d3fcef0b805a1d27e0a358e24921867ebaee5276e6","schema_version":"1.0","event_id":"sha256:397635564888b4dfc49e74d3fcef0b805a1d27e0a358e24921867ebaee5276e6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RX3KQ4B7RPJMOSNTCK3YGSRH36/bundle.json","state_url":"https://pith.science/pith/RX3KQ4B7RPJMOSNTCK3YGSRH36/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RX3KQ4B7RPJMOSNTCK3YGSRH36/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":"2026-07-07T14:43:48Z","links":{"resolver":"https://pith.science/pith/RX3KQ4B7RPJMOSNTCK3YGSRH36","bundle":"https://pith.science/pith/RX3KQ4B7RPJMOSNTCK3YGSRH36/bundle.json","state":"https://pith.science/pith/RX3KQ4B7RPJMOSNTCK3YGSRH36/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RX3KQ4B7RPJMOSNTCK3YGSRH36/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:RX3KQ4B7RPJMOSNTCK3YGSRH36","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":"13ba4bc44bbf9ea740e0ff3964b07eba5f0c67182d0e1e76b4a1982270831cab","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-11-02T09:11:13Z","title_canon_sha256":"84e2847b1f99feaeb4948ce449f3aaa90c447be9dc7229767201331016813f25"},"schema_version":"1.0","source":{"id":"2111.01447","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.01447","created_at":"2026-07-05T03:49:24Z"},{"alias_kind":"arxiv_version","alias_value":"2111.01447v1","created_at":"2026-07-05T03:49:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.01447","created_at":"2026-07-05T03:49:24Z"},{"alias_kind":"pith_short_12","alias_value":"RX3KQ4B7RPJM","created_at":"2026-07-05T03:49:24Z"},{"alias_kind":"pith_short_16","alias_value":"RX3KQ4B7RPJMOSNT","created_at":"2026-07-05T03:49:24Z"},{"alias_kind":"pith_short_8","alias_value":"RX3KQ4B7","created_at":"2026-07-05T03:49:24Z"}],"graph_snapshots":[{"event_id":"sha256:397635564888b4dfc49e74d3fcef0b805a1d27e0a358e24921867ebaee5276e6","target":"graph","created_at":"2026-07-05T03:49:24Z","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/2111.01447/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We search for H$\\alpha$ emitters at $z\\sim7.8$ in four gravitationally lensed fields observed in the Hubble Frontier Fields program. We use the Lyman break method to select galaxies at the target redshift, and make the photometry in {\\it Spitzer}/IRAC 5.8 $\\mu$m band to detect the H$\\alpha$ emission from the candidate galaxies. We find no significant detection of counterparts in the IRAC 5.8 $\\mu$m band, and this gives a constraint on the H$\\alpha$ luminosity function (LF) at $z\\sim7.8$. We compare the constraint with previous studies on rest-frame UV and FIR observation using the correlation ","authors_text":"K. Ohta (Department of Astronomy Kyoto University), Y. Asada","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-11-02T09:11:13Z","title":"Search for H$\\alpha$ Emitters at $z\\sim7.8$: A Constraint on the H$\\alpha$-based Star Formation Rate Density"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.01447","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:d5afb39e020a2a71b32a81e81a3ed5d3ab83921eed634579b8c20d8de3e9c7d9","target":"record","created_at":"2026-07-05T03:49:24Z","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":"13ba4bc44bbf9ea740e0ff3964b07eba5f0c67182d0e1e76b4a1982270831cab","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-11-02T09:11:13Z","title_canon_sha256":"84e2847b1f99feaeb4948ce449f3aaa90c447be9dc7229767201331016813f25"},"schema_version":"1.0","source":{"id":"2111.01447","kind":"arxiv","version":1}},"canonical_sha256":"8df6a8703f8bd2c749b312b7834a27dfb3530edfbcccb264eaa4f4b1d8a0b3b1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8df6a8703f8bd2c749b312b7834a27dfb3530edfbcccb264eaa4f4b1d8a0b3b1","first_computed_at":"2026-07-05T03:49:24.026429Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:49:24.026429Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xkJ4d9I/lwflcZV9sviwMW5JPHwX/r+6ht2wWJcwmV0iy36iI7COEsW10BW+eUcAlhhiSxIKg8VXljxgS6tDBA==","signature_status":"signed_v1","signed_at":"2026-07-05T03:49:24.026922Z","signed_message":"canonical_sha256_bytes"},"source_id":"2111.01447","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d5afb39e020a2a71b32a81e81a3ed5d3ab83921eed634579b8c20d8de3e9c7d9","sha256:397635564888b4dfc49e74d3fcef0b805a1d27e0a358e24921867ebaee5276e6"],"state_sha256":"3eecc4df0903d2318a56762d9254c98d5130fc95627d68e183364c4d9d29928a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/95xOA+3OQ3OrK/vUg6X6jZEgKULgOJ/0IgWIKO1bgtsxug1pJjP2buwtPqr57lpy9rrtxYJkBqA/d7eppGfAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T14:43:48.272512Z","bundle_sha256":"faf2af3e65ffab547783cf2ca55c09c673291a7dc0fc43acbd6113191e1676cc"}}