{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:L7JGDWCQVDSTVDSLZXML362YXY","short_pith_number":"pith:L7JGDWCQ","schema_version":"1.0","canonical_sha256":"5fd261d850a8e53a8e4bcdd8bdfb58be02fbe037c3b01f8a323d23eda77a87a5","source":{"kind":"arxiv","id":"1512.09208","version":1},"attestation_state":"computed","paper":{"title":"Giant H$\\alpha$ nebula surrounding the starburst merger NGC 6240","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Hisashi Tanaka, Masafumi Yagi, Michitoshi Yoshida, Nobunari Kashikawa, Sadanori Okamura, Youichi Ohyama, Yutaka Komiyama","submitted_at":"2015-12-31T03:53:42Z","abstract_excerpt":"We revealed the detailed structure of a vastly extended H$\\alpha$-emitting nebula (\"H$\\alpha$ nebula\") surrounding the starburst/merging galaxy NGC 6240 by deep narrow-band imaging observations with the Subaru Suprime-Cam. The extent of the nebula is $\\sim$90 kpc in diameter and the total H$\\alpha$ luminosity amounts to $\\approx 1.6 \\times 10^{42}$ erg s$^{-1}$. The volume filling factor and the mass of the warm ionized gas are $\\sim$10$^{-4}$--10$^{-5}$ and $\\sim$$5 \\times 10^8$ $M_\\odot$, respectively. The nebula has a complicated structure, which includes numerous filaments, loops, bubbles,"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1512.09208","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-31T03:53:42Z","cross_cats_sorted":[],"title_canon_sha256":"45fdfacc25f41946dc947513b914b4e38ec05a0c479575d39b4f294277aff25a","abstract_canon_sha256":"c285c18e43104ac45f61f7d572de4f73545e0a2a3a4a923e0ca5870d2d233a21"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:18:38.781225Z","signature_b64":"lwoCG5+79WFE4N8QLu9mryKcsItyc5DT9QqueCGSrai+Hgq7OeLpGm91Vd1nPauYkdHEAlBoG+kAtUSuIlx+Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5fd261d850a8e53a8e4bcdd8bdfb58be02fbe037c3b01f8a323d23eda77a87a5","last_reissued_at":"2026-05-18T01:18:38.780678Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:18:38.780678Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Giant H$\\alpha$ nebula surrounding the starburst merger NGC 6240","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Hisashi Tanaka, Masafumi Yagi, Michitoshi Yoshida, Nobunari Kashikawa, Sadanori Okamura, Youichi Ohyama, Yutaka Komiyama","submitted_at":"2015-12-31T03:53:42Z","abstract_excerpt":"We revealed the detailed structure of a vastly extended H$\\alpha$-emitting nebula (\"H$\\alpha$ nebula\") surrounding the starburst/merging galaxy NGC 6240 by deep narrow-band imaging observations with the Subaru Suprime-Cam. The extent of the nebula is $\\sim$90 kpc in diameter and the total H$\\alpha$ luminosity amounts to $\\approx 1.6 \\times 10^{42}$ erg s$^{-1}$. The volume filling factor and the mass of the warm ionized gas are $\\sim$10$^{-4}$--10$^{-5}$ and $\\sim$$5 \\times 10^8$ $M_\\odot$, respectively. The nebula has a complicated structure, which includes numerous filaments, loops, bubbles,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.09208","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1512.09208","created_at":"2026-05-18T01:18:38.780765+00:00"},{"alias_kind":"arxiv_version","alias_value":"1512.09208v1","created_at":"2026-05-18T01:18:38.780765+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.09208","created_at":"2026-05-18T01:18:38.780765+00:00"},{"alias_kind":"pith_short_12","alias_value":"L7JGDWCQVDST","created_at":"2026-05-18T12:29:29.992203+00:00"},{"alias_kind":"pith_short_16","alias_value":"L7JGDWCQVDSTVDSL","created_at":"2026-05-18T12:29:29.992203+00:00"},{"alias_kind":"pith_short_8","alias_value":"L7JGDWCQ","created_at":"2026-05-18T12:29:29.992203+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/L7JGDWCQVDSTVDSLZXML362YXY","json":"https://pith.science/pith/L7JGDWCQVDSTVDSLZXML362YXY.json","graph_json":"https://pith.science/api/pith-number/L7JGDWCQVDSTVDSLZXML362YXY/graph.json","events_json":"https://pith.science/api/pith-number/L7JGDWCQVDSTVDSLZXML362YXY/events.json","paper":"https://pith.science/paper/L7JGDWCQ"},"agent_actions":{"view_html":"https://pith.science/pith/L7JGDWCQVDSTVDSLZXML362YXY","download_json":"https://pith.science/pith/L7JGDWCQVDSTVDSLZXML362YXY.json","view_paper":"https://pith.science/paper/L7JGDWCQ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1512.09208&json=true","fetch_graph":"https://pith.science/api/pith-number/L7JGDWCQVDSTVDSLZXML362YXY/graph.json","fetch_events":"https://pith.science/api/pith-number/L7JGDWCQVDSTVDSLZXML362YXY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/L7JGDWCQVDSTVDSLZXML362YXY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/L7JGDWCQVDSTVDSLZXML362YXY/action/storage_attestation","attest_author":"https://pith.science/pith/L7JGDWCQVDSTVDSLZXML362YXY/action/author_attestation","sign_citation":"https://pith.science/pith/L7JGDWCQVDSTVDSLZXML362YXY/action/citation_signature","submit_replication":"https://pith.science/pith/L7JGDWCQVDSTVDSLZXML362YXY/action/replication_record"}},"created_at":"2026-05-18T01:18:38.780765+00:00","updated_at":"2026-05-18T01:18:38.780765+00:00"}