{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:KEWNONFB7SBXU4CWY643GYGIH2","short_pith_number":"pith:KEWNONFB","schema_version":"1.0","canonical_sha256":"512cd734a1fc837a7056c7b9b360c83e9b3bd531b01c7e904a89b0c0b4cdb9b2","source":{"kind":"arxiv","id":"1804.09374","version":1},"attestation_state":"computed","paper":{"title":"Gaia Data Release 2: first stellar parameters from Apsis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Alexandru Burlacu, Andreas Korn, Anne Jean-Antoine-Piccolo, Bernard Pichon, Chantal Panem, Christophe Ordenovic, Coryn A.L. Bailer-Jones, Frederic Thevenin, Gavin Walmsley, Georges Kordopatis, Laurence Chaoul, Morgan Fouesneau, Nicolas Mary, Orlagh Creevey, Rene Andrae, Yveline Lebreton","submitted_at":"2018-04-25T06:25:24Z","abstract_excerpt":"The second Gaia data release (Gaia-DR2) contains, beyond the astrometry, three-band photometry for 1.38 billion sources. We have used these three broad bands to infer stellar effective temperatures, Teff, for all sources brighter than G=17 mag with Teff in the range 3000-10 000 K (161 million sources). Using in addition the parallaxes, we infer the line-of-sight extinction, A_G, and the reddening, E[BP-RP], for 88 million sources. Together with a bolometric correction we derive luminosity and radius for 77 million sources. These quantities as well as their estimated uncertainties are part of G"},"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":"1804.09374","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-04-25T06:25:24Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"9c2a76fc9631a2fc18598d2b0495c7c5e3a68c6be2cb6e060acbb3419e3ad625","abstract_canon_sha256":"a41e434934d98e95f8767d419eff047a1cdd7800e6811765fff50eb7e9061bf3"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:07:40.503990Z","signature_b64":"1KmpoqvASHgsRz0NIujqrEFW3wn/zu7sC5qcv+QxmJ6aUs9NKxnqyGERWV3abmQBXJtzSXtF45pc8Wb7srfRDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"512cd734a1fc837a7056c7b9b360c83e9b3bd531b01c7e904a89b0c0b4cdb9b2","last_reissued_at":"2026-05-18T00:07:40.503207Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:07:40.503207Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Gaia Data Release 2: first stellar parameters from Apsis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Alexandru Burlacu, Andreas Korn, Anne Jean-Antoine-Piccolo, Bernard Pichon, Chantal Panem, Christophe Ordenovic, Coryn A.L. Bailer-Jones, Frederic Thevenin, Gavin Walmsley, Georges Kordopatis, Laurence Chaoul, Morgan Fouesneau, Nicolas Mary, Orlagh Creevey, Rene Andrae, Yveline Lebreton","submitted_at":"2018-04-25T06:25:24Z","abstract_excerpt":"The second Gaia data release (Gaia-DR2) contains, beyond the astrometry, three-band photometry for 1.38 billion sources. We have used these three broad bands to infer stellar effective temperatures, Teff, for all sources brighter than G=17 mag with Teff in the range 3000-10 000 K (161 million sources). Using in addition the parallaxes, we infer the line-of-sight extinction, A_G, and the reddening, E[BP-RP], for 88 million sources. Together with a bolometric correction we derive luminosity and radius for 77 million sources. These quantities as well as their estimated uncertainties are part of G"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.09374","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":"1804.09374","created_at":"2026-05-18T00:07:40.503337+00:00"},{"alias_kind":"arxiv_version","alias_value":"1804.09374v1","created_at":"2026-05-18T00:07:40.503337+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.09374","created_at":"2026-05-18T00:07:40.503337+00:00"},{"alias_kind":"pith_short_12","alias_value":"KEWNONFB7SBX","created_at":"2026-05-18T12:32:33.847187+00:00"},{"alias_kind":"pith_short_16","alias_value":"KEWNONFB7SBXU4CW","created_at":"2026-05-18T12:32:33.847187+00:00"},{"alias_kind":"pith_short_8","alias_value":"KEWNONFB","created_at":"2026-05-18T12:32:33.847187+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/KEWNONFB7SBXU4CWY643GYGIH2","json":"https://pith.science/pith/KEWNONFB7SBXU4CWY643GYGIH2.json","graph_json":"https://pith.science/api/pith-number/KEWNONFB7SBXU4CWY643GYGIH2/graph.json","events_json":"https://pith.science/api/pith-number/KEWNONFB7SBXU4CWY643GYGIH2/events.json","paper":"https://pith.science/paper/KEWNONFB"},"agent_actions":{"view_html":"https://pith.science/pith/KEWNONFB7SBXU4CWY643GYGIH2","download_json":"https://pith.science/pith/KEWNONFB7SBXU4CWY643GYGIH2.json","view_paper":"https://pith.science/paper/KEWNONFB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1804.09374&json=true","fetch_graph":"https://pith.science/api/pith-number/KEWNONFB7SBXU4CWY643GYGIH2/graph.json","fetch_events":"https://pith.science/api/pith-number/KEWNONFB7SBXU4CWY643GYGIH2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/KEWNONFB7SBXU4CWY643GYGIH2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/KEWNONFB7SBXU4CWY643GYGIH2/action/storage_attestation","attest_author":"https://pith.science/pith/KEWNONFB7SBXU4CWY643GYGIH2/action/author_attestation","sign_citation":"https://pith.science/pith/KEWNONFB7SBXU4CWY643GYGIH2/action/citation_signature","submit_replication":"https://pith.science/pith/KEWNONFB7SBXU4CWY643GYGIH2/action/replication_record"}},"created_at":"2026-05-18T00:07:40.503337+00:00","updated_at":"2026-05-18T00:07:40.503337+00:00"}