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Using the Sloan Digital Sky Survey (SDSS), we construct a new diagnostic, or TBT diagram, that is based on rest-frame g-z color, [NeIII]{\\lambda}3869, and [OII]{\\lambda}{\\lambda}3726 + 3729 and can be used for galax"},"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":"1110.0008","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-09-30T20:07:00Z","cross_cats_sorted":[],"title_canon_sha256":"f3f3caa1c21b13b0b00409bd5bdcf50c3451f74bce2192d8878ba85d36d66ae4","abstract_canon_sha256":"e6de29192c422709ec043a4335cb6cfb5bf187a6f4fdd4e512b174c53d4e743d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:11:51.003350Z","signature_b64":"yl9F4cJZoM6Rhaq0EAb2adlcMZ8z3GGkH1Ep7uFOx1tnMuSyGHlG4oIOE8HO+6WfuGPA8tGnq9JwcVEV/nRBBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"777c6b2d299342e320a3c9cae4a9a862960af44fc8608b8e6f85164c67f7f887","last_reissued_at":"2026-05-18T04:11:51.002835Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:11:51.002835Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The OPTX Project V: Identifying Distant AGNs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. 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