{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:HWMSLMFMT3NSOFIS7NGD2IL36Z","short_pith_number":"pith:HWMSLMFM","canonical_record":{"source":{"id":"1309.0008","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-08-30T20:00:04Z","cross_cats_sorted":[],"title_canon_sha256":"6336d92d0c1b3e28e1728efdef70101134d0bd4a2db4171c1024207f5754339f","abstract_canon_sha256":"2ebc74ba4954aaa1dcb9d3a9f25492cdeb6edfdfd0a6119a67393a244acd9c39"},"schema_version":"1.0"},"canonical_sha256":"3d9925b0ac9edb271512fb4c3d217bf67683b2a6e734362d822cfade774b904b","source":{"kind":"arxiv","id":"1309.0008","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.0008","created_at":"2026-05-18T01:47:56Z"},{"alias_kind":"arxiv_version","alias_value":"1309.0008v1","created_at":"2026-05-18T01:47:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.0008","created_at":"2026-05-18T01:47:56Z"},{"alias_kind":"pith_short_12","alias_value":"HWMSLMFMT3NS","created_at":"2026-05-18T12:27:46Z"},{"alias_kind":"pith_short_16","alias_value":"HWMSLMFMT3NSOFIS","created_at":"2026-05-18T12:27:46Z"},{"alias_kind":"pith_short_8","alias_value":"HWMSLMFM","created_at":"2026-05-18T12:27:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:HWMSLMFMT3NSOFIS7NGD2IL36Z","target":"record","payload":{"canonical_record":{"source":{"id":"1309.0008","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-08-30T20:00:04Z","cross_cats_sorted":[],"title_canon_sha256":"6336d92d0c1b3e28e1728efdef70101134d0bd4a2db4171c1024207f5754339f","abstract_canon_sha256":"2ebc74ba4954aaa1dcb9d3a9f25492cdeb6edfdfd0a6119a67393a244acd9c39"},"schema_version":"1.0"},"canonical_sha256":"3d9925b0ac9edb271512fb4c3d217bf67683b2a6e734362d822cfade774b904b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:47:56.363946Z","signature_b64":"8kjjgn/bNzck4tgEWkk6rha+bdZ/yeJF6RgMaUW5InwMRIOp2I1tIuQKTOWBuyCve3M0Xp8+W84vB/PILG0ZDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3d9925b0ac9edb271512fb4c3d217bf67683b2a6e734362d822cfade774b904b","last_reissued_at":"2026-05-18T01:47:56.363474Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:47:56.363474Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1309.0008","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":"2026-05-18T01:47:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pNetZy4XL6pOSAbvPh2nKOxipUNZJszb4YKK6fvD9U29DL7w/8B2+RfO1+LHaXTOeik57zihkLotC1211QggCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T12:18:28.555113Z"},"content_sha256":"65c74126a946cfa55c338b97e97784ac2225ea91e844bfeaeb0e377a52f748ff","schema_version":"1.0","event_id":"sha256:65c74126a946cfa55c338b97e97784ac2225ea91e844bfeaeb0e377a52f748ff"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:HWMSLMFMT3NSOFIS7NGD2IL36Z","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Encoding the infrared excess (IRX) in the NUVrK color diagram for star-forming galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Benjamin D. Johnson, Bruno Milliard, Dave B. Sanders, Emeric Le Floc'h, Henry J. McCracken, Herve Aussel, Jacopo Chevallard, Lucia Pozzetti, Mara Salvato, Marie Treyer, Nick Scoville, Olivier Ilbert, Peter Capak, Stephane Arnouts","submitted_at":"2013-08-30T20:00:04Z","abstract_excerpt":"We present an empirical method of assessing the star formation rate (SFR) of star-forming galaxies based on their locations in the rest-frame color-color diagram (NUV-r) vs (r-K). By using the Spitzer 24 micron sample in the COSMOS field (~16400 galaxies with 0.2 < z < 1.3) and a local GALEX-SDSS-SWIRE sample (~700 galaxies with z < 0.2), we show that the mean infrared excess <IRX>= < L_IR / L_UV > can be described by a single vector, NRK, that combines the two colors. The calibration between <IRX> and NRK allows us to recover the IR luminosity, L_IR, with an accuracy of ~0.21 dex for the COSM"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.0008","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":"2026-05-18T01:47:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c3ISq9MwUQXoyC7VhUx7+ZZSNujAydKbUjsWANU3RbcUYUxKoVEkELiH8uIGdLpeJISpqRZNqWCfE6l7U5lKAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T12:18:28.555501Z"},"content_sha256":"9551d5744f0394ced9f9aadd64407d4a63f3e068796d71ef79ee9dad95370123","schema_version":"1.0","event_id":"sha256:9551d5744f0394ced9f9aadd64407d4a63f3e068796d71ef79ee9dad95370123"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HWMSLMFMT3NSOFIS7NGD2IL36Z/bundle.json","state_url":"https://pith.science/pith/HWMSLMFMT3NSOFIS7NGD2IL36Z/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HWMSLMFMT3NSOFIS7NGD2IL36Z/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":"2026-05-21T12:18:28Z","links":{"resolver":"https://pith.science/pith/HWMSLMFMT3NSOFIS7NGD2IL36Z","bundle":"https://pith.science/pith/HWMSLMFMT3NSOFIS7NGD2IL36Z/bundle.json","state":"https://pith.science/pith/HWMSLMFMT3NSOFIS7NGD2IL36Z/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HWMSLMFMT3NSOFIS7NGD2IL36Z/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:HWMSLMFMT3NSOFIS7NGD2IL36Z","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":"2ebc74ba4954aaa1dcb9d3a9f25492cdeb6edfdfd0a6119a67393a244acd9c39","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-08-30T20:00:04Z","title_canon_sha256":"6336d92d0c1b3e28e1728efdef70101134d0bd4a2db4171c1024207f5754339f"},"schema_version":"1.0","source":{"id":"1309.0008","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.0008","created_at":"2026-05-18T01:47:56Z"},{"alias_kind":"arxiv_version","alias_value":"1309.0008v1","created_at":"2026-05-18T01:47:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.0008","created_at":"2026-05-18T01:47:56Z"},{"alias_kind":"pith_short_12","alias_value":"HWMSLMFMT3NS","created_at":"2026-05-18T12:27:46Z"},{"alias_kind":"pith_short_16","alias_value":"HWMSLMFMT3NSOFIS","created_at":"2026-05-18T12:27:46Z"},{"alias_kind":"pith_short_8","alias_value":"HWMSLMFM","created_at":"2026-05-18T12:27:46Z"}],"graph_snapshots":[{"event_id":"sha256:9551d5744f0394ced9f9aadd64407d4a63f3e068796d71ef79ee9dad95370123","target":"graph","created_at":"2026-05-18T01:47:56Z","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 an empirical method of assessing the star formation rate (SFR) of star-forming galaxies based on their locations in the rest-frame color-color diagram (NUV-r) vs (r-K). By using the Spitzer 24 micron sample in the COSMOS field (~16400 galaxies with 0.2 < z < 1.3) and a local GALEX-SDSS-SWIRE sample (~700 galaxies with z < 0.2), we show that the mean infrared excess <IRX>= < L_IR / L_UV > can be described by a single vector, NRK, that combines the two colors. The calibration between <IRX> and NRK allows us to recover the IR luminosity, L_IR, with an accuracy of ~0.21 dex for the COSM","authors_text":"Benjamin D. Johnson, Bruno Milliard, Dave B. Sanders, Emeric Le Floc'h, Henry J. McCracken, Herve Aussel, Jacopo Chevallard, Lucia Pozzetti, Mara Salvato, Marie Treyer, Nick Scoville, Olivier Ilbert, Peter Capak, Stephane Arnouts","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-08-30T20:00:04Z","title":"Encoding the infrared excess (IRX) in the NUVrK color diagram for star-forming galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.0008","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":"sha256:65c74126a946cfa55c338b97e97784ac2225ea91e844bfeaeb0e377a52f748ff","target":"record","created_at":"2026-05-18T01:47:56Z","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":"2ebc74ba4954aaa1dcb9d3a9f25492cdeb6edfdfd0a6119a67393a244acd9c39","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-08-30T20:00:04Z","title_canon_sha256":"6336d92d0c1b3e28e1728efdef70101134d0bd4a2db4171c1024207f5754339f"},"schema_version":"1.0","source":{"id":"1309.0008","kind":"arxiv","version":1}},"canonical_sha256":"3d9925b0ac9edb271512fb4c3d217bf67683b2a6e734362d822cfade774b904b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3d9925b0ac9edb271512fb4c3d217bf67683b2a6e734362d822cfade774b904b","first_computed_at":"2026-05-18T01:47:56.363474Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:47:56.363474Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8kjjgn/bNzck4tgEWkk6rha+bdZ/yeJF6RgMaUW5InwMRIOp2I1tIuQKTOWBuyCve3M0Xp8+W84vB/PILG0ZDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:47:56.363946Z","signed_message":"canonical_sha256_bytes"},"source_id":"1309.0008","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:65c74126a946cfa55c338b97e97784ac2225ea91e844bfeaeb0e377a52f748ff","sha256:9551d5744f0394ced9f9aadd64407d4a63f3e068796d71ef79ee9dad95370123"],"state_sha256":"829842a24af4eb4d3a8713dbb3002db9a473db1df6dff13bf7434bbcb5e89819"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pki9kFvw+0J174kHnOmpArvfRDR0fN4KiLuwBG1B/r9gLea1na0HItRjLNMBDkzItWp3877QV8y86T62e19FBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T12:18:28.557472Z","bundle_sha256":"56a065e3e022580b224de2b0143f2a508580633ee9a083efec4688e850669be7"}}