{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:HCUA453XZJ42GSGMWO3YEGWYMR","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":"5693f2bf40b552b608878c6010df19ee3ddf65aeb4455ef1276bad4961861b6e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-02-10T21:43:43Z","title_canon_sha256":"4916dd395b64f921990eac01235609bbc14547c506b9688ac16a16887e11f0ac"},"schema_version":"1.0","source":{"id":"1502.03131","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.03131","created_at":"2026-05-18T01:59:37Z"},{"alias_kind":"arxiv_version","alias_value":"1502.03131v1","created_at":"2026-05-18T01:59:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.03131","created_at":"2026-05-18T01:59:37Z"},{"alias_kind":"pith_short_12","alias_value":"HCUA453XZJ42","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"HCUA453XZJ42GSGM","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"HCUA453X","created_at":"2026-05-18T12:29:22Z"}],"graph_snapshots":[{"event_id":"sha256:826d4b6d8ecb0fb75bbab40133cdacee4e377e9a87cb236fdeb8ae598bb1dac6","target":"graph","created_at":"2026-05-18T01:59:37Z","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":"The far-infrared (FIR) lines are key tracers of the physical conditions of the interstellar medium (ISM) and are becoming workhorse diagnostics for galaxies throughout the universe. Our goal is to explain the differences and trends observed in the FIR line emission of dwarf galaxies compared to more metal-rich galaxies. We present Herschel PACS spectroscopic observations of the CII157um, OI63 and 145um, OIII88um, NII122 and 205um, and NIII57um fine-structure cooling lines in a sample of 48 low-metallicity star-forming galaxies of the guaranteed time key program Dwarf Galaxy Survey. We correlat","authors_text":"A. Boselli, A. Cooray, A. Remy-Ruyer, D. Cormier, F. Bigiel, F. Galliano, I. De Looze, L. Spinoglio, M. Baes, M. Chevance, M. Galametz, M.-Y. Lee, N. Abel, N. Lu, O. L. Karczewski, S. C. Madden, S. Hony, T. Hugues, V. Doublier, V. Lebouteiller","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-02-10T21:43:43Z","title":"The Herschel Dwarf Galaxy Survey: I. Properties of the low-metallicity ISM from PACS spectroscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.03131","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":"sha256:98910105635ee27fdd2ca0706b70f4ad14d1d727caff22f6be3c24eeada013cc","target":"record","created_at":"2026-05-18T01:59:37Z","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":"5693f2bf40b552b608878c6010df19ee3ddf65aeb4455ef1276bad4961861b6e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-02-10T21:43:43Z","title_canon_sha256":"4916dd395b64f921990eac01235609bbc14547c506b9688ac16a16887e11f0ac"},"schema_version":"1.0","source":{"id":"1502.03131","kind":"arxiv","version":1}},"canonical_sha256":"38a80e7777ca79a348ccb3b7821ad8646652f635303684dc4a6f787333e0df6e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"38a80e7777ca79a348ccb3b7821ad8646652f635303684dc4a6f787333e0df6e","first_computed_at":"2026-05-18T01:59:37.537075Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:59:37.537075Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kBeJbRHNOi9vo4270qk5EI3dN4Y9Tynhh14qNThFc5YEDtwq9KpVIxdVqHXEwynp13e7vbhRiJi9tboaIiKmBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:59:37.537764Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.03131","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:98910105635ee27fdd2ca0706b70f4ad14d1d727caff22f6be3c24eeada013cc","sha256:826d4b6d8ecb0fb75bbab40133cdacee4e377e9a87cb236fdeb8ae598bb1dac6"],"state_sha256":"40cd1119397ff9a64e6e07d93ff8eef508c4c60ca472368dbb432b7ddf14faa4"}