{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:JE4HPPVGCWV6FFBAC3SBRECL6S","short_pith_number":"pith:JE4HPPVG","canonical_record":{"source":{"id":"2509.04662","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-09-04T21:21:01Z","cross_cats_sorted":[],"title_canon_sha256":"5a6815071ec4a935f65bcfa4fdb6fbd2fcae1fc60d4f6a65ec5e98c4cf9f0388","abstract_canon_sha256":"950be34e4017e2d0ba9ed0ae81780e7a0ff0f6ed7311153f00b953009e683e85"},"schema_version":"1.0"},"canonical_sha256":"493877bea615abe2942016e418904bf49bd50c767e29794d7ff0ce0bd0982616","source":{"kind":"arxiv","id":"2509.04662","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.04662","created_at":"2026-07-05T12:05:27Z"},{"alias_kind":"arxiv_version","alias_value":"2509.04662v1","created_at":"2026-07-05T12:05:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.04662","created_at":"2026-07-05T12:05:27Z"},{"alias_kind":"pith_short_12","alias_value":"JE4HPPVGCWV6","created_at":"2026-07-05T12:05:27Z"},{"alias_kind":"pith_short_16","alias_value":"JE4HPPVGCWV6FFBA","created_at":"2026-07-05T12:05:27Z"},{"alias_kind":"pith_short_8","alias_value":"JE4HPPVG","created_at":"2026-07-05T12:05:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:JE4HPPVGCWV6FFBAC3SBRECL6S","target":"record","payload":{"canonical_record":{"source":{"id":"2509.04662","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-09-04T21:21:01Z","cross_cats_sorted":[],"title_canon_sha256":"5a6815071ec4a935f65bcfa4fdb6fbd2fcae1fc60d4f6a65ec5e98c4cf9f0388","abstract_canon_sha256":"950be34e4017e2d0ba9ed0ae81780e7a0ff0f6ed7311153f00b953009e683e85"},"schema_version":"1.0"},"canonical_sha256":"493877bea615abe2942016e418904bf49bd50c767e29794d7ff0ce0bd0982616","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T12:05:27.154366Z","signature_b64":"sdGxyO/gxtCwfVqSTaYSZPzYKPkOK2EsTN9TtoS2KaI0dYgQIo7YtSewVZT7pTdAiPhVapMbsuury4E7uJ20CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"493877bea615abe2942016e418904bf49bd50c767e29794d7ff0ce0bd0982616","last_reissued_at":"2026-07-05T12:05:27.153832Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T12:05:27.153832Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2509.04662","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":"2026-07-05T12:05:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zDjuM7Fo8a5oRvE9JdvW0U7e6BX3mvl/L7Wq81FLpU1oxjx5HK4BQtkVDyp7QkRT0AGP4AXSDur4f9UsZVd8BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-15T23:10:03.769628Z"},"content_sha256":"141b84e806cf30058b3c47ba41e6ca9a0a74c89f52f0f1b707e95c01e4ab1ade","schema_version":"1.0","event_id":"sha256:141b84e806cf30058b3c47ba41e6ca9a0a74c89f52f0f1b707e95c01e4ab1ade"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:JE4HPPVGCWV6FFBAC3SBRECL6S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Resolving Emission from Small Dust Grains in the Blue Compact Dwarf II Zw 40 with JWST","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Aditya Togi, Adolf N. Witt, Alberto Bolatto, Brandon S. Hensley, Cory M. Whitcomb, Elizabeth Tarantino, Grant P. Donnelly, Henrik W.W. Spoon, J.D.T. Smith, Karin Sandstrom, Laura Lenkic, Lee Armus, Masatoshi Imanishi, Sara Duval, Sean Linden, Shunsuke Baba, Takao Nakagawa, Thomas S.-Y. Lai","submitted_at":"2025-09-04T21:21:01Z","abstract_excerpt":"We present James Webb Space Telescope (JWST) Near Infrared Spectrograph (NIRSpec) and Mid-infrared Instrument (MIRI) integral-field spectroscopy of the nearby blue compact dwarf II Zw 40, which has a low metallicity of 25% of solar. Leveraging the high spatial/spectral resolution and wavelength coverage of JWST/NIRSpec, we present robust detections of the 3.3 um polycyclic aromatic hydrocarbon (PAH) emission on 20 pc scales. The strength of the Pf delta emission relative to the 3.3 PAH feature is significantly stronger than typical higher metallicity star-forming galaxies. We find that 3.3 um "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.04662","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/2509.04662/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":"2026-07-05T12:05:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Iyj8tSGrfNIv98tdewvV57aWhg1HTdEhmVMnIq+FEzLr9HMmOhm6RU1fuIFe93mWAUgVRc2Uzs/Mpi6dUotRAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-15T23:10:03.770008Z"},"content_sha256":"663a8028a78cff5dd304a8cfc6c1f0bea35dcbf9029fb6b9ef906edec2269a21","schema_version":"1.0","event_id":"sha256:663a8028a78cff5dd304a8cfc6c1f0bea35dcbf9029fb6b9ef906edec2269a21"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JE4HPPVGCWV6FFBAC3SBRECL6S/bundle.json","state_url":"https://pith.science/pith/JE4HPPVGCWV6FFBAC3SBRECL6S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JE4HPPVGCWV6FFBAC3SBRECL6S/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":"2026-07-15T23:10:03Z","links":{"resolver":"https://pith.science/pith/JE4HPPVGCWV6FFBAC3SBRECL6S","bundle":"https://pith.science/pith/JE4HPPVGCWV6FFBAC3SBRECL6S/bundle.json","state":"https://pith.science/pith/JE4HPPVGCWV6FFBAC3SBRECL6S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JE4HPPVGCWV6FFBAC3SBRECL6S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:JE4HPPVGCWV6FFBAC3SBRECL6S","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":"950be34e4017e2d0ba9ed0ae81780e7a0ff0f6ed7311153f00b953009e683e85","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-09-04T21:21:01Z","title_canon_sha256":"5a6815071ec4a935f65bcfa4fdb6fbd2fcae1fc60d4f6a65ec5e98c4cf9f0388"},"schema_version":"1.0","source":{"id":"2509.04662","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.04662","created_at":"2026-07-05T12:05:27Z"},{"alias_kind":"arxiv_version","alias_value":"2509.04662v1","created_at":"2026-07-05T12:05:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.04662","created_at":"2026-07-05T12:05:27Z"},{"alias_kind":"pith_short_12","alias_value":"JE4HPPVGCWV6","created_at":"2026-07-05T12:05:27Z"},{"alias_kind":"pith_short_16","alias_value":"JE4HPPVGCWV6FFBA","created_at":"2026-07-05T12:05:27Z"},{"alias_kind":"pith_short_8","alias_value":"JE4HPPVG","created_at":"2026-07-05T12:05:27Z"}],"graph_snapshots":[{"event_id":"sha256:663a8028a78cff5dd304a8cfc6c1f0bea35dcbf9029fb6b9ef906edec2269a21","target":"graph","created_at":"2026-07-05T12:05:27Z","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/2509.04662/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present James Webb Space Telescope (JWST) Near Infrared Spectrograph (NIRSpec) and Mid-infrared Instrument (MIRI) integral-field spectroscopy of the nearby blue compact dwarf II Zw 40, which has a low metallicity of 25% of solar. Leveraging the high spatial/spectral resolution and wavelength coverage of JWST/NIRSpec, we present robust detections of the 3.3 um polycyclic aromatic hydrocarbon (PAH) emission on 20 pc scales. The strength of the Pf delta emission relative to the 3.3 PAH feature is significantly stronger than typical higher metallicity star-forming galaxies. We find that 3.3 um ","authors_text":"Aditya Togi, Adolf N. Witt, Alberto Bolatto, Brandon S. Hensley, Cory M. Whitcomb, Elizabeth Tarantino, Grant P. Donnelly, Henrik W.W. Spoon, J.D.T. Smith, Karin Sandstrom, Laura Lenkic, Lee Armus, Masatoshi Imanishi, Sara Duval, Sean Linden, Shunsuke Baba, Takao Nakagawa, Thomas S.-Y. Lai","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-09-04T21:21:01Z","title":"Resolving Emission from Small Dust Grains in the Blue Compact Dwarf II Zw 40 with JWST"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.04662","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":"sha256:141b84e806cf30058b3c47ba41e6ca9a0a74c89f52f0f1b707e95c01e4ab1ade","target":"record","created_at":"2026-07-05T12:05:27Z","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":"950be34e4017e2d0ba9ed0ae81780e7a0ff0f6ed7311153f00b953009e683e85","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-09-04T21:21:01Z","title_canon_sha256":"5a6815071ec4a935f65bcfa4fdb6fbd2fcae1fc60d4f6a65ec5e98c4cf9f0388"},"schema_version":"1.0","source":{"id":"2509.04662","kind":"arxiv","version":1}},"canonical_sha256":"493877bea615abe2942016e418904bf49bd50c767e29794d7ff0ce0bd0982616","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"493877bea615abe2942016e418904bf49bd50c767e29794d7ff0ce0bd0982616","first_computed_at":"2026-07-05T12:05:27.153832Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T12:05:27.153832Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sdGxyO/gxtCwfVqSTaYSZPzYKPkOK2EsTN9TtoS2KaI0dYgQIo7YtSewVZT7pTdAiPhVapMbsuury4E7uJ20CQ==","signature_status":"signed_v1","signed_at":"2026-07-05T12:05:27.154366Z","signed_message":"canonical_sha256_bytes"},"source_id":"2509.04662","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:141b84e806cf30058b3c47ba41e6ca9a0a74c89f52f0f1b707e95c01e4ab1ade","sha256:663a8028a78cff5dd304a8cfc6c1f0bea35dcbf9029fb6b9ef906edec2269a21"],"state_sha256":"b5595d7448a1e58b3731cde7c9c3d20a7f0ee5be1fbb9200dd6c604a34b118de"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gScoDwH9kKrLqc3wvsf2/si9b5YrK+2ryyvhe4LP9GhfITrsxlZfGxfTRTbX6Gw2xjDPg15UBHije2NGKeg8Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-15T23:10:03.772558Z","bundle_sha256":"94f4e36a4f6bdeb96bccb15fd1762aedeee958c30c1d84a1885cbd32e7f7741d"}}