{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:J7F23DOC2M3JDBXQCRUC2JU64O","short_pith_number":"pith:J7F23DOC","schema_version":"1.0","canonical_sha256":"4fcbad8dc2d3369186f014682d269ee3b2fc23ec14e7713d85c424e5710d1816","source":{"kind":"arxiv","id":"1712.06400","version":1},"attestation_state":"computed","paper":{"title":"A search for pre- and proto-brown dwarfs in the dark cloud Barnard 30 with ALMA","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"A. Bayo, A. Palau, C. Eiroa, D. Barrado, F. M\\'enard, I. de Gregorio-Monsalvo, L. Zapata, M. Morales-Calder\\'on, M.T. Ruiz, N. Hu\\'elamo, O. Morata","submitted_at":"2017-12-18T13:54:51Z","abstract_excerpt":"In this work we present ALMA continuum observations at 880 $\\mu$m of 30 sub-mm cores previously identified with APEX/LABOCA at 870$\\mu$m in the Barnard 30 cloud. The main goal is to characterize the youngest and lowest mass population in the cloud. As a result, we report the detection of five (out of 30) spatially unresolved sources with ALMA, with estimated masses between 0.9 and 67 M$_{\\rm Jup}$. From these five sources, only two show gas emission. The analysis of multi-wavelength photometry from these two objects, namely B30-LB14 and B30-LB19, is consistent with one Class II- and one Class "},"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":"1712.06400","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-12-18T13:54:51Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"263f15a243490090edc4555537cc91eebcb65340dbd2ce01cf6f91282201bf40","abstract_canon_sha256":"d281994f48d16aa37aa80a46613c215f58b090c92167314dc7abd0e3acd7f886"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:27:17.283821Z","signature_b64":"O2CxTOJR401hfE6knqU/p1kmbgYUVES/PEK1vQZBShbeNTtldOEM+g8zbpQTtLz/g00RSjp36RxlWqwYCA2FAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4fcbad8dc2d3369186f014682d269ee3b2fc23ec14e7713d85c424e5710d1816","last_reissued_at":"2026-05-18T00:27:17.283382Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:27:17.283382Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A search for pre- and proto-brown dwarfs in the dark cloud Barnard 30 with ALMA","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"A. Bayo, A. Palau, C. Eiroa, D. Barrado, F. M\\'enard, I. de Gregorio-Monsalvo, L. Zapata, M. Morales-Calder\\'on, M.T. Ruiz, N. Hu\\'elamo, O. Morata","submitted_at":"2017-12-18T13:54:51Z","abstract_excerpt":"In this work we present ALMA continuum observations at 880 $\\mu$m of 30 sub-mm cores previously identified with APEX/LABOCA at 870$\\mu$m in the Barnard 30 cloud. The main goal is to characterize the youngest and lowest mass population in the cloud. As a result, we report the detection of five (out of 30) spatially unresolved sources with ALMA, with estimated masses between 0.9 and 67 M$_{\\rm Jup}$. From these five sources, only two show gas emission. The analysis of multi-wavelength photometry from these two objects, namely B30-LB14 and B30-LB19, is consistent with one Class II- and one Class "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.06400","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":"1712.06400","created_at":"2026-05-18T00:27:17.283448+00:00"},{"alias_kind":"arxiv_version","alias_value":"1712.06400v1","created_at":"2026-05-18T00:27:17.283448+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.06400","created_at":"2026-05-18T00:27:17.283448+00:00"},{"alias_kind":"pith_short_12","alias_value":"J7F23DOC2M3J","created_at":"2026-05-18T12:31:21.493067+00:00"},{"alias_kind":"pith_short_16","alias_value":"J7F23DOC2M3JDBXQ","created_at":"2026-05-18T12:31:21.493067+00:00"},{"alias_kind":"pith_short_8","alias_value":"J7F23DOC","created_at":"2026-05-18T12:31:21.493067+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/J7F23DOC2M3JDBXQCRUC2JU64O","json":"https://pith.science/pith/J7F23DOC2M3JDBXQCRUC2JU64O.json","graph_json":"https://pith.science/api/pith-number/J7F23DOC2M3JDBXQCRUC2JU64O/graph.json","events_json":"https://pith.science/api/pith-number/J7F23DOC2M3JDBXQCRUC2JU64O/events.json","paper":"https://pith.science/paper/J7F23DOC"},"agent_actions":{"view_html":"https://pith.science/pith/J7F23DOC2M3JDBXQCRUC2JU64O","download_json":"https://pith.science/pith/J7F23DOC2M3JDBXQCRUC2JU64O.json","view_paper":"https://pith.science/paper/J7F23DOC","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1712.06400&json=true","fetch_graph":"https://pith.science/api/pith-number/J7F23DOC2M3JDBXQCRUC2JU64O/graph.json","fetch_events":"https://pith.science/api/pith-number/J7F23DOC2M3JDBXQCRUC2JU64O/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/J7F23DOC2M3JDBXQCRUC2JU64O/action/timestamp_anchor","attest_storage":"https://pith.science/pith/J7F23DOC2M3JDBXQCRUC2JU64O/action/storage_attestation","attest_author":"https://pith.science/pith/J7F23DOC2M3JDBXQCRUC2JU64O/action/author_attestation","sign_citation":"https://pith.science/pith/J7F23DOC2M3JDBXQCRUC2JU64O/action/citation_signature","submit_replication":"https://pith.science/pith/J7F23DOC2M3JDBXQCRUC2JU64O/action/replication_record"}},"created_at":"2026-05-18T00:27:17.283448+00:00","updated_at":"2026-05-18T00:27:17.283448+00:00"}