{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:5LMNRRQSHXPMKXG7LKO6KZ7PXE","short_pith_number":"pith:5LMNRRQS","canonical_record":{"source":{"id":"1308.1099","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-08-05T20:00:04Z","cross_cats_sorted":[],"title_canon_sha256":"43021254a1176644a84f57828f461cb1f5070e57e44ddf33008ab7c070acaa7f","abstract_canon_sha256":"c3a5575af1f773afda35775658136e7bfe1d7f5f1e3ff8bcc387c39bc523be05"},"schema_version":"1.0"},"canonical_sha256":"ead8d8c6123ddec55cdf5a9de567efb915661da3b02b4abfae1246ee3b20fae2","source":{"kind":"arxiv","id":"1308.1099","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.1099","created_at":"2026-05-18T01:48:23Z"},{"alias_kind":"arxiv_version","alias_value":"1308.1099v2","created_at":"2026-05-18T01:48:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.1099","created_at":"2026-05-18T01:48:23Z"},{"alias_kind":"pith_short_12","alias_value":"5LMNRRQSHXPM","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"5LMNRRQSHXPMKXG7","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"5LMNRRQS","created_at":"2026-05-18T12:27:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:5LMNRRQSHXPMKXG7LKO6KZ7PXE","target":"record","payload":{"canonical_record":{"source":{"id":"1308.1099","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-08-05T20:00:04Z","cross_cats_sorted":[],"title_canon_sha256":"43021254a1176644a84f57828f461cb1f5070e57e44ddf33008ab7c070acaa7f","abstract_canon_sha256":"c3a5575af1f773afda35775658136e7bfe1d7f5f1e3ff8bcc387c39bc523be05"},"schema_version":"1.0"},"canonical_sha256":"ead8d8c6123ddec55cdf5a9de567efb915661da3b02b4abfae1246ee3b20fae2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:48:23.543536Z","signature_b64":"ck/c+ATALUdG/MbI2uAkq3daTLhKliFXOx96w6Uw+oOPWjDaMQdHqglQekj8lkIIZdwkL6+cNs2qKG+oqvm6CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ead8d8c6123ddec55cdf5a9de567efb915661da3b02b4abfae1246ee3b20fae2","last_reissued_at":"2026-05-18T01:48:23.542844Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:48:23.542844Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1308.1099","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":"2026-05-18T01:48:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JAJxiE83eCGmQOoPdyOc09nyE3X48+4O82ONoftiG4sERoPrpT9ENydq1HIn5kfyqJUM98rwZYerWk7yoJ1lBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T21:51:55.571688Z"},"content_sha256":"98af71697912ec34163937bc018621c1fdef6377d6fa75a20e2ba4a48f548968","schema_version":"1.0","event_id":"sha256:98af71697912ec34163937bc018621c1fdef6377d6fa75a20e2ba4a48f548968"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:5LMNRRQSHXPMKXG7LKO6KZ7PXE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Dust Attenuation Law in Distant Galaxies: Evidence for Variation with Spectral Type","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Charlie Conroy (Santa Cruz), Mariska Kriek (Berkeley)","submitted_at":"2013-08-05T20:00:04Z","abstract_excerpt":"This letter utilizes composite spectral energy distributions (SEDs) constructed from NEWFIRM Medium-Band Survey photometry to constrain the dust attenuation curve in 0.5<z<2.0 galaxies. Based on similarities between the full SED shapes (0.3-8 micron), we have divided galaxies in 32 different spectral classes and stacked their photometry. As each class contains galaxies over a range in redshift, the resulting rest-frame SEDs are well-sampled in wavelength and show various spectral features including Halpha and the UV dust bump at 2175 Angstrom. We fit all composite SEDs with flexible stellar po"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.1099","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":"2026-05-18T01:48:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nQvIGhuYveVNe4VrZYAcrK6xbxHimlxeOLpPlUHIOVUXPXDKvbs7DAmYHQs8UFAY6ziKXydFVy190OPmPJutDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T21:51:55.572026Z"},"content_sha256":"69ddd438dabf6e3d73257d7dfb3d49e1f97b0fdc21b487964012b83be7dbac91","schema_version":"1.0","event_id":"sha256:69ddd438dabf6e3d73257d7dfb3d49e1f97b0fdc21b487964012b83be7dbac91"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5LMNRRQSHXPMKXG7LKO6KZ7PXE/bundle.json","state_url":"https://pith.science/pith/5LMNRRQSHXPMKXG7LKO6KZ7PXE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5LMNRRQSHXPMKXG7LKO6KZ7PXE/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":"2026-06-08T21:51:55Z","links":{"resolver":"https://pith.science/pith/5LMNRRQSHXPMKXG7LKO6KZ7PXE","bundle":"https://pith.science/pith/5LMNRRQSHXPMKXG7LKO6KZ7PXE/bundle.json","state":"https://pith.science/pith/5LMNRRQSHXPMKXG7LKO6KZ7PXE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5LMNRRQSHXPMKXG7LKO6KZ7PXE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:5LMNRRQSHXPMKXG7LKO6KZ7PXE","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":"c3a5575af1f773afda35775658136e7bfe1d7f5f1e3ff8bcc387c39bc523be05","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-08-05T20:00:04Z","title_canon_sha256":"43021254a1176644a84f57828f461cb1f5070e57e44ddf33008ab7c070acaa7f"},"schema_version":"1.0","source":{"id":"1308.1099","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.1099","created_at":"2026-05-18T01:48:23Z"},{"alias_kind":"arxiv_version","alias_value":"1308.1099v2","created_at":"2026-05-18T01:48:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.1099","created_at":"2026-05-18T01:48:23Z"},{"alias_kind":"pith_short_12","alias_value":"5LMNRRQSHXPM","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"5LMNRRQSHXPMKXG7","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"5LMNRRQS","created_at":"2026-05-18T12:27:34Z"}],"graph_snapshots":[{"event_id":"sha256:69ddd438dabf6e3d73257d7dfb3d49e1f97b0fdc21b487964012b83be7dbac91","target":"graph","created_at":"2026-05-18T01:48:23Z","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":"This letter utilizes composite spectral energy distributions (SEDs) constructed from NEWFIRM Medium-Band Survey photometry to constrain the dust attenuation curve in 0.5<z<2.0 galaxies. Based on similarities between the full SED shapes (0.3-8 micron), we have divided galaxies in 32 different spectral classes and stacked their photometry. As each class contains galaxies over a range in redshift, the resulting rest-frame SEDs are well-sampled in wavelength and show various spectral features including Halpha and the UV dust bump at 2175 Angstrom. We fit all composite SEDs with flexible stellar po","authors_text":"Charlie Conroy (Santa Cruz), Mariska Kriek (Berkeley)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-08-05T20:00:04Z","title":"The Dust Attenuation Law in Distant Galaxies: Evidence for Variation with Spectral Type"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.1099","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":"sha256:98af71697912ec34163937bc018621c1fdef6377d6fa75a20e2ba4a48f548968","target":"record","created_at":"2026-05-18T01:48:23Z","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":"c3a5575af1f773afda35775658136e7bfe1d7f5f1e3ff8bcc387c39bc523be05","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-08-05T20:00:04Z","title_canon_sha256":"43021254a1176644a84f57828f461cb1f5070e57e44ddf33008ab7c070acaa7f"},"schema_version":"1.0","source":{"id":"1308.1099","kind":"arxiv","version":2}},"canonical_sha256":"ead8d8c6123ddec55cdf5a9de567efb915661da3b02b4abfae1246ee3b20fae2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ead8d8c6123ddec55cdf5a9de567efb915661da3b02b4abfae1246ee3b20fae2","first_computed_at":"2026-05-18T01:48:23.542844Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:48:23.542844Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ck/c+ATALUdG/MbI2uAkq3daTLhKliFXOx96w6Uw+oOPWjDaMQdHqglQekj8lkIIZdwkL6+cNs2qKG+oqvm6CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:48:23.543536Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.1099","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:98af71697912ec34163937bc018621c1fdef6377d6fa75a20e2ba4a48f548968","sha256:69ddd438dabf6e3d73257d7dfb3d49e1f97b0fdc21b487964012b83be7dbac91"],"state_sha256":"0c0ae3afd370c917ed47428f5d69e7ed062007bbeae901ee8f7ed4c06e477ca7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Rvsvp6JfAJ3VuemGZYAlET6sMI42q7QafSO94hYKfjPz3Wq+9grPVUaCfJs4op+VURZDtgMMfs/D8buEYGbeCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T21:51:55.573853Z","bundle_sha256":"ffd738af739af6f9bfd01357847ddcdb231e1fb9fb174a21c46eed46a631f465"}}