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Su, Mark Pecaut, Martin Bitner","submitted_at":"2012-07-14T11:36:11Z","abstract_excerpt":"We have obtained Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS) 24 {\\mu}m and 70 {\\mu}m observations of 215 nearby, Hipparcos B- and A-type common proper motion single and binary systems in the nearest OB association, Scorpius-Centaurus. Combining our MIPS observations with those of other ScoCen stars in the literature, we estimate 24 {\\mu}m B+A-type disk fractions of 17/67 (25+6%), 36/131 (27+4%), and 23/95 (24+5%) for Upper Scorpius (\\sim11 Myr), Upper Centaurus Lupus (\\sim15 Myr), and Lower Centaurus Crux (\\sim17 Myr), respectively, somewhat smaller disk fractions t"},"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":"1207.3415","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-07-14T11:36:11Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"1b5a880978608f8b4b0c148c11f1d4bd8459b8f405e2261b2d0955a159cd0bc6","abstract_canon_sha256":"024ae48d6b5ef5ec4be8b01c0ee113be74a885df8d3d763446fadc7dba44a4ad"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:56:23.695265Z","signature_b64":"42fmOGZSWbyEiEvDhKL5H3QONx1qClWCb1hI4iHy8bH0NLFMYe++6PAZMIci5qtweeU338+ds4zCs+Z3rgR8Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f0039c2d488816049569f67ae02f80394a8534a246ac62adb3109f6451d84779","last_reissued_at":"2026-05-18T01:56:23.694677Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:56:23.694677Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Spitzer MIPS Study of 2.5-2.0 M\\odot Stars in Scorpius-Centaurus","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"Christine H. 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