{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:DDTAVZBZNZNFJ2ACY2TV2Y6MUB","short_pith_number":"pith:DDTAVZBZ","schema_version":"1.0","canonical_sha256":"18e60ae4396e5a54e802c6a75d63cca067e73c2fefecba1cbf52cb9ccb06ddf6","source":{"kind":"arxiv","id":"1809.00118","version":2},"attestation_state":"computed","paper":{"title":"CO observations toward the isolated mid-infrared bubble S44: External triggering of O-star formation by a cloud-cloud collision","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Akio Ohama, Atsushi Nishimura, Hidetoshi Sano, Hiroaki Yamamoto, Kazufumi Torii, Keisuke Hasegawa, Kengo Tachihara, Mikito Kohno, Misaki Hanaoka, Rei Enokiya, Satoshi Yoshiike, Shinji Fujita, Yasuo Fukui, Yusuke Hattori","submitted_at":"2018-09-01T05:54:04Z","abstract_excerpt":"We have performed a multi-wavelength study of the mid-infrared bubble S44 to investigate the origin of isolated high-mass star(s) and the star-formation process around the bubble formed by the HII region. In this paper, we report the results of new CO observations ($^{12}$CO, $^{13}$CO $J=$1-0, and $^{12}$CO $J=$3-2) toward the isolated bubble S44 using the NANTEN2, Mopra, and ASTE radio telescopes. We found two velocity components in the direction of the bubble, at $-84$ km s$^{-1}$ and $-79$ km s$^{-1}$. These two clouds are likely to be physically associated with the bubble,both because of "},"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":"1809.00118","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-01T05:54:04Z","cross_cats_sorted":[],"title_canon_sha256":"4776d567d83d3fc33d87dd9508526f46064b437393770f4a8385add70176d1e4","abstract_canon_sha256":"6cf8bf876cab9d78ff699c2d167c95d0e8efeab02dc800006d4f7a4d6e75d899"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:59:50.003528Z","signature_b64":"B9bR0DwuwmsuA1mHUJWrDTJqTRmHAkWflImHtK9/I1nZurUfPN9K/QGt0l+Fjq/LTNM8iOLpVAwW23DLoxSHAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"18e60ae4396e5a54e802c6a75d63cca067e73c2fefecba1cbf52cb9ccb06ddf6","last_reissued_at":"2026-05-17T23:59:50.003007Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:59:50.003007Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"CO observations toward the isolated mid-infrared bubble S44: External triggering of O-star formation by a cloud-cloud collision","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Akio Ohama, Atsushi Nishimura, Hidetoshi Sano, Hiroaki Yamamoto, Kazufumi Torii, Keisuke Hasegawa, Kengo Tachihara, Mikito Kohno, Misaki Hanaoka, Rei Enokiya, Satoshi Yoshiike, Shinji Fujita, Yasuo Fukui, Yusuke Hattori","submitted_at":"2018-09-01T05:54:04Z","abstract_excerpt":"We have performed a multi-wavelength study of the mid-infrared bubble S44 to investigate the origin of isolated high-mass star(s) and the star-formation process around the bubble formed by the HII region. In this paper, we report the results of new CO observations ($^{12}$CO, $^{13}$CO $J=$1-0, and $^{12}$CO $J=$3-2) toward the isolated bubble S44 using the NANTEN2, Mopra, and ASTE radio telescopes. We found two velocity components in the direction of the bubble, at $-84$ km s$^{-1}$ and $-79$ km s$^{-1}$. These two clouds are likely to be physically associated with the bubble,both because of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.00118","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1809.00118","created_at":"2026-05-17T23:59:50.003087+00:00"},{"alias_kind":"arxiv_version","alias_value":"1809.00118v2","created_at":"2026-05-17T23:59:50.003087+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.00118","created_at":"2026-05-17T23:59:50.003087+00:00"},{"alias_kind":"pith_short_12","alias_value":"DDTAVZBZNZNF","created_at":"2026-05-18T12:32:19.392346+00:00"},{"alias_kind":"pith_short_16","alias_value":"DDTAVZBZNZNFJ2AC","created_at":"2026-05-18T12:32:19.392346+00:00"},{"alias_kind":"pith_short_8","alias_value":"DDTAVZBZ","created_at":"2026-05-18T12:32:19.392346+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/DDTAVZBZNZNFJ2ACY2TV2Y6MUB","json":"https://pith.science/pith/DDTAVZBZNZNFJ2ACY2TV2Y6MUB.json","graph_json":"https://pith.science/api/pith-number/DDTAVZBZNZNFJ2ACY2TV2Y6MUB/graph.json","events_json":"https://pith.science/api/pith-number/DDTAVZBZNZNFJ2ACY2TV2Y6MUB/events.json","paper":"https://pith.science/paper/DDTAVZBZ"},"agent_actions":{"view_html":"https://pith.science/pith/DDTAVZBZNZNFJ2ACY2TV2Y6MUB","download_json":"https://pith.science/pith/DDTAVZBZNZNFJ2ACY2TV2Y6MUB.json","view_paper":"https://pith.science/paper/DDTAVZBZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1809.00118&json=true","fetch_graph":"https://pith.science/api/pith-number/DDTAVZBZNZNFJ2ACY2TV2Y6MUB/graph.json","fetch_events":"https://pith.science/api/pith-number/DDTAVZBZNZNFJ2ACY2TV2Y6MUB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/DDTAVZBZNZNFJ2ACY2TV2Y6MUB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/DDTAVZBZNZNFJ2ACY2TV2Y6MUB/action/storage_attestation","attest_author":"https://pith.science/pith/DDTAVZBZNZNFJ2ACY2TV2Y6MUB/action/author_attestation","sign_citation":"https://pith.science/pith/DDTAVZBZNZNFJ2ACY2TV2Y6MUB/action/citation_signature","submit_replication":"https://pith.science/pith/DDTAVZBZNZNFJ2ACY2TV2Y6MUB/action/replication_record"}},"created_at":"2026-05-17T23:59:50.003087+00:00","updated_at":"2026-05-17T23:59:50.003087+00:00"}