{"paper":{"title":"Herschel PACS observations of 4-10 Myr old Classical T Tauri stars in Orion OB1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Babar Ali, Catherine Espaillat, C\\'esar Brice\\~no, Charles M. Telesco, Chunhua Qi, Dan Li, Enrique Mac\\'ias, Javier Ballesteros-Paredes, Jes\\'us Hern\\'andez, Juan Jos\\'e Downes, Karina Mauc\\'o, Nuria Calvet, Omaira Gonz\\'alez, Paola D'Alessio, Ra\\'ul Michel","submitted_at":"2018-04-17T17:09:22Z","abstract_excerpt":"We present \\emph{Herschel} PACS observations of 8 Classical T Tauri Stars in the $\\sim 7-10$ Myr old OB1a and the $\\sim 4-5$ Myr old OB1b Orion sub-asscociations. Detailed modeling of the broadband spectral energy distributions, particularly the strong silicate emission at 10 $\\mu$m, shows that these objects are (pre)transitional disks with some amount of small optically thin dust inside their cavities, ranging from $\\sim 4$ AU to $\\sim 90$ AU in size. We analyzed \\emph{Spitzer} IRS spectra for two objects in the sample: CVSO-107 and CVSO-109. The IRS spectrum of CVSO-107 indicates the presenc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.06377","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"}